Physics Questions and Answers November 10, 2022

x2 Q2. A uniform thin rod of length L, (L 3.x m, where x is the second last digit of your student number, e.g. L 3.7 m if your number is 12345678A), oscillates as a physical pendulum shown in (10 marks) the figure. L2 L2 Figure 2 (a) Find the distance x between the sticks centre of mass and its pivot point O that gives the least period. (b)

Saturns mass is M 5.69 x 1026 kg and its radius R60,300 km. If a moon orbits Saturn at a distance equal to 5 times its planetary radius, what is its period of orbit (Hint, use Newtons version of Keplers 3rd law, and you can neglect the mass of the moon) Express your answer in days to three significant figures.

(a) A soccer player kicks a rock horizontally off a 44 m high cliff into a pool of water. If the player hears the sound of the splash 3.19 s later, what was the initial speed given to the rock (in ms) Assume the speed of sound in air is 343 ms. ms (b) What If If the temperature near the cliff suddenly falls to 0C, reducing the speed of sound to

An object of mass 19.0 kg is hung from a spring with a spring-constant, k = 350 N/m. A chord attached to the spring passes over a frictionless pulley as shown. The object is released from rest and at the moment the object has dropped 0.500 m, the spring is also stretched by 0.500 m from its natural length. What is the speed of the mass at this

A student measures the following data in a calorimetry experiment designed to determine the specific heat of aluminum. (Do not assume atmospheric pressure.) Initial temperature of water and calorimeter: 70C Mass of water: 0.400 kg Mass of calorimeter: 0.040 kg Specific heat of calorimeter: 0.63 kJ/kg C Initial temperature of aluminum: 26.7C Mass

4. A long cylindrical conductor of radius a, having axis aligned with the Z xis, carries a current I uniformly passing through it along 2. The same amount of current returns back along a thin metal wire passing through its axis. Determine the magnitude and direction of the magnetic field everywhere.

In a given reference frame xOy, a pointlike particle is moving with velocity v(t) (t1 s) ms5 x (t1 s) msc. 1) Determine the value of the exponent d and c in order for the expression to make sense. 2) Determine the position r(t1s) of the particle by knowing that at the time t0 the particle is at the position r(t0) 0.2 m x 0 m . 3) Determine the

What is the definition of torsional rigidity? What is the definition of polar moment of inertia? Compare them for various cross sectional beams.

A 2 000 kg elevator is raised a distance of 18 m in a time of 40 s. Determine the power output.

1. Derive the intensity of diffracted beam for a set of tripleslit shown below, and plot the result for the cases of (a) a 2b and c 3a and (b) a 6band c 32a. b 000 Pat D Where Da, cb, D is the height of a slit a is the adjacent spacing within the doubleslit b is the width of a slit c is the spacing between doubleslits. (Use HuygensFresnel

Consider actual weightlessness and perceived weightlessness. a) Describe in detail what perceived weightlessness means. Give an example of a scenario where a person could experience perceived weightlessness. Explain why that person still would have actual weight and how it could be calculated. b) Describe in detail what actual weightlessness means

An unknown substance has a mass of 0.125 kg and an initial temperature of 93.5C. The substance is then dropped into a calorimeter made of aluminum containing 0.285 kg of water initially at 29.5C. The mass of the aluminum container is 0.150 kg, and the temperature of the calorimeter increases to a final equilibrium temperature of 32.0C. Assuming no

A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. The temperature of the free end of the copper rod is held constant at 100C, and that of the far end of the aluminum rod is held at 0C. If the copper rod is 0.42 m long, what must be the length of the aluminum rod so that the temperature at the

In a given reference frame xOy, a pointlike particle is moving with motion equations x(t)t ms 6 t ms 3 m and y(t) t ms. 1) Determine the time(s) at which the x component of the velocity is zero 2) Determine the time(s) at which the y component of the velocity is zero 3) Determine the time(s) at which the x component acceleration is zero 4)

3. 30 pts A particle moves with uniform speed, v(t) constant, along the curve p(t) k 1 cos o(t), (a cardioid). Here, k is a positive constant, and, p and are polar coordinates. Find the magnitude of the acceleration in terms of v, k and o.

Two boys A and B are sitting on opposite sides of a horizontal turntable which rotates at a constant counterclockwise angular velocity was seen from above. Boy A throws a ball toward B by giving it a horizontal velocity u relative to the turntable to ward B. Assume that the ball has no horizontal acceleration once released and write an expression

A perfectly uniform ball with a diameter 20 cm and density 5 gcm is rotating in free space at 1 revolution per second. An intelligent flea of 1 mg resides in a small (massless) house fixed to the balls surface at a rotational pole. The flea decides to move the equator to the house by walking quickly to a latitude of 45 and waiting the proper

The equation below shows the mathematical representation(s) for mechanical work done on a system by an average force external to that system thus, work here means external work. Match each term in the equation with the correct description from this list (1) Average External Force Vector (2) Magnitude of the Average External Force Vector (3) Change

A particle of mass m can slide freely along a light wire AB whose perpendicular distance to the origin O is h. The line OC rotates about the origin at a constant angular speed . The position of the particle can be described in terms of the angle and the distance q to the point C. The initial conditions are 0 (0) 0, q(0) 0 and (0) 0. A y 9 m

A copper sphere with density 8900 kgm3, radius 5.00 cm, and emissivity e 1.00 sits on an insulated stand. The initial temperature of the sphere is 300 K. The surroundings are very cold, so the rate of absorption of heat by the sphere can be neglected. a) How long does it take the sphere to cool by 1.00 K due to its radiation of heat energy

Two bodies, with heat capacities C1 and C2 (assumed independent of temperature) and initial temperature T1 and T 2 respectively, are placed in thermal contact. (A) Calculate their final temperature (B) Calculate the variation of the entropy and define their signs. (C) Calculate the variation of entropy of the isolated system formed by the two

What are the values that we have to provide to all inputs of the following memory module in order to read the contents of the memory address location 00011 FIGURE 123 (a) Diagram of a 32 X 4 memory (b) virtual arrangement of memory cells into 32 fourbit words. Address inputs MSB A A3 A A Ao Data inputs IIII 13 12 1 10 32 x 4 Memory 03 02 01 00

Step1-Write a function that plots a butterfly pattern that meets the specifications given below and calls it in main. The function should return its own execution time. Also, the elements on the butterfly should indicate mathematical quadrants. An example of a 10x10 butterfly. Step2- Your program should give the user 2 options. The first option

Rewrite the program below in C and Java, run them, and compare the resul Let the function fun be defined as Int fun(int k) k 4 return 3 (k) 1 Suppose fun is used in a program as follows vold main() Int i 10, j 10, sum1, sum2 sum1 (12) fun(i) sum2 fun(j) (12)

Write a c program that will produce this array 2 8 3 16 32 5 In the array, 2 is stored in the ith location. The program should declare and initialize the integer array to store these values. It should display the values to the output in the following way 1248 16 32,Write a c program that will produce this array 2 8 3 16 32 5 In the array, 2 is

A clarientist setting out for a performance, grabs his 3.21kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 29.9N Find the cases vertical acceleration. Indicate an upward acceleration as positive and a downward one as negative A)1,59ms2 B)0.50ms2 C)0.50ms2 D)1.59ms2

The speed of light in a certain type of glass is 72% slower than the speed of light in air. What is the index of refraction for that type of plastic?

A ranking classifier ranks 25 training examples x, from highest to lowest rank, in the following order Highest Lowest X2, X3, X1, X5, X13, X6, XS, X7, X9, X10, X12, X11, X15, X4, X14, X21, X17, X20, X18, X22, X16, X19, X25, X23, X24 Examples x through X12 are in the positive class (which should be ranked higher) examples X13 through X25 are in the

Solve the set of linear equations. You can solve this question by hand or using MATLAB or using Excel. xyz7 4x3yz18 xyz5 X y Z

You are given a 1 kW CO laser at 10.6 m with a Gaussian beam waist at its flat output mirroir of wo 10 mm. 3.1 Optimum focusing on a target You are given a collection of lenses that can sustain at most a Gaussian beam of w 23 mm. Your target is at 60 from the laser. To achieve a maximum intensity on target, you can select a system of two lenses 1

I 6. Write the associated linear programming problem for the following network flow problem.

7. Draw a network regarding the following linear programming problem. Minimize 4.x12 3x13 2x23 2x42 6x343x35 3x64 65 4x75 2x76 subject to X12 X13 12 23

x [n] = (0.3) ^ n u [n] + (0.5) ^ n u [n] is a discrete time signal Which of the following is the convergence region of this signal? The z transformation of the discrete time signal X (z) = z (z-0.2) / (z ^ 2-1.6z + 0.6) where (z ^ 2-1.6z + 0.6) = (z-0.6) (z-1) Which of the following is the inverse z transform of this signal?

O a. Izl 0.3 O d. Izl0.5 O e. Izl 0.3

2a. 2b. Construct a max heap H for the following sequence of given integer numbers with showing subsequent steps 48, 34, 54, 26, 64, 59, 81, 59 Delete the root of heap and show the reheapify steps of given integers numbers in 2a.

15. A roller coaster is travelling without friction as shown in the diagram below. If the speed of the roller coaster at position A is 3.0 ms, what is the speed at position B Use the Law of Conservation of Energy to solve. A 20 15.0 m 7.0 m

12. The battery of your calculator can provide power at the rate of 0.029 W for 275 h. If this energy could be used to accelerate a 0.145 kg baseball from rest, what velocity would the ball reach

1. JP Hammond is an alien pet hobbyist and has a number of pet aliens at his personal zoo. For redecoration of his zoo, he needs to transport the aliens to a nearby zoo. During this transfer, he wants to minimize the number of cages needed. But some of the aliens cannot be kept together as they have predatorprey relationship as shown below Alphas

For the graph given below A 7 8 B 3 8 6 3 D 2 E 5 F (a) Give the breadth first traversal steps of the graph with starting graph node as A. (b) Give the depth first traversal steps of the graph with starting graph node as A. (c) Construct the minimum spanning tree using Kruskal Algorithm and also compute the total weight of the spanning tree. Show

a) Consider the filter transfer function of the Gaussian Low Pass Filter that you have studied. What Do values of the Gaussian Low Pass Filter Transfer Function will you select in the following cases 10 marks i) ii) In case the aim is to achieve very strong blurring. In case the aim is to achieve very minorweak blurring. b) Describe the Conjugate

(a) Consider the problem of computing the value of a polynomial of the third order khai th gii tuy What is the number of test cases one should develop for exhaustive testing assuming that one uses 32 bits to represent real number coefficients Assuming that each test case uses up to Susec. What time is needed to perform this testing. 9 (b) The

A 15 mH inductor, a 500 resistor, and a 20 uF capacitor are connected in series to a 20 V peak voltage AC power supply with a frequency of 200 Hz. What is the average power dissipated in the circuit

Dry run the following code and show all steps. H 12 20 21 void preorderprint(treenode node) is empty() int flag if (flag 1) return 22 if (node NULL) 55 66 cout nodedata left) preorderprint (noderight) 67

Write a C code for the following scenarios. The code should be complete in terms of its functionality i. Analyze the following diagram and answer the questions. ii. 2 12 10 a) Convert the above into MinHeap and show new diagram and its array representation. b) Which traversal method did you use for array representation A library needs to

) Write a method named matrixSort which takes an FxF matrix and print the row of the matrix in ascending and descending order alternatively. Explanation The first row is sorted in ascending order, second row sorted in descending order, third row sorted in ascending order and so on. Int mat1005, 7, 3, 4). (9,5,8,2). (6, 3, 8, 1). (5,8,9,3)) matrix

A. Find the names of all students who are friends with someone named Homer J. Simpson. B. For every pair of students who both like each other, return the name and status of both students. C. Find all students who do not appear in the Likes table (as a student who likes or is liked) and return their names and status. Sort by status, then by name

For the following relation schema Students(ID, name, status) Grade History(ID.courseID, course Credit, gradepoint) Friend(ID1,ID2) Likes (ID1, ID2) Friend table represents unidirectional relationships i.e if id1 1510 and id2 1381 means 1510 friends with 1381 but not vice versa. Likes table represents unidirectional relationships i.e if id1 1689

Considering the CFG given above. i) Draw the derivation tree for the string aaaa. ii) Draw the total language tree. iii) Convert this CFG into Chomsky Normal Form (CNF).

SaS aSb XX axa a

Write a C++ code for the following scenarios. The code should be complete in terms of its functionality. Suppose you are given 2 doubly-linked lists of the same length (equal number of nodes) containing integer data. You are required to implement the following function for the linked-lists. mergeList (Node * , Node *) Takes the header nodes

Construct the AVL tree for the following by providing tree status after each insertion 100, 200, -50, 19, 10, 50, -90

4. A 10.0 kg object is accelerated horizontally from rest to a velocity of 11.0 ms in 5.00 s by a horizontal force. How much work is done on this object if it accelerates along a frictionless surface Do not use the WorkEnergy Theorem.

The coefficient of static friction between the rubber eraser of the pencil and the tabletop is us0.80. If the force F is applied along the axis of the pencil, as shown below, what is the minimum angle at which the pencil can stand without slipping Ignore the weight of the pencil.,The coefficient of static friction between the rubber eraser of the

There are Comparisons between Cellular network and Ad Hoc Wireless Networks except O Reuse of frequency spectrum through geographical channel reuse (cellular network) and Dynamic frequency reuse based on carrier sense mechanism (MANET) Fixed infrastructurebased (MANET), and Infrastructureless (cellular network) O High cost and time of deployment

You are configuring router R1 and wish to enable EIGRP on all interfaces for the 11.0.0.0 network and 12.0.0.0 network. What command would you use Use the following commands OR1(config)router eigrp 10 R1(configrouter)network 11.0.0.0 255.0.0.0 R1(configrouter)network 12.0.0.0 255.0.0.0 O R1(config)router eigrp 11.0.0.0.12.0.0.0 O R1 (config)router

1. Write a recursive Java method that can find the n-th power of ten (10n ). The prototype should be: public int powerOfTen(int n); 2. What is the value of f(2)? (trace the code and write down the steps; do not run the code in Eclipse) public static int f(int n) { if (n == 4) return n; else return 2*f(n+1); } 3. What is the value of f (4, 5)?

a) Sketch the IV characteristic curve for an illuminated pn junction diode composed of a direct semiconducting material. Indicate Isc and Voc on your graph and match the following diode types to their operating regions on the graph LED, solar cell, photodetector. b) Briefly describe how the illuminated pn junction diode operates as a photodetector

1 2 3 4 5 6 Consider the below program. MOV AX, 10 AX 10 ADD AX, BX AX BX SUB BX, CX BX CX JL XXX ADD CX, AX CX AX ADD AX, 3 AX 3 branch to XXX if AX 0 (a) Determine the instruction issue rate if it is run on a Pentiumbased processor. Show your steps clearly. (8 marks) (b) Suppose the program is to be run on an OOE processor and the

Which of them represent paths represents a tree. v1e1v2 and v1e2v3e3v3 v1e1v2e4v1 and v1e2v3e3v4 v1e1v2e4v5 and v1e2v3e3v3 v2e1v3 and v2e2v3e3v5

10. The Lagrangian for the Simple Harmonic Oscillator is given as L1mxmux where X is the generalized coordinate and X is the generalized velocity. Compute the Hamiltonian of this system.

Consider n convex (or concave) thin lenses with a focal length fn( > 0 or < 0 ), placed at positions zn. An object of size L0 is located at position Z0=negative infinity. We want to derive the position Z1 of the image, and the magnification M as a function of all given parameters. All values of positions are algebraic, i.e. can be either > 0 or <

Solve the following firstorder ODE using RK4 technique in MATLAB dy da y(0) 5 (x y) sinxy a. Solve using MATLAB code to find numerical solution using step size h0.2 for 0 x 2. Write all the values in tabular form with x and y columns b. Plot a xy graph using MATLAB code to plot the numerical values obtained in part a.

Assume that an engineer wants to add division instruction support to MSP430 instruction set. The desired usage of the new instruction is as follows div.w , which executes the following operations dst dst src dstnext dst src ( is modulo operator) where dstnext (depending on the addressing mode) can be the next memory location (e.g. if dst

read the following program carefully to write the contents of the assembler symbol table at the end of the code generation ORG 400 P1 P2 P3 ADR r4, a LDR r0, 14 ADR r4, c IDR r1, 14 ADD r0, r0, rl CMP r0, r1. BNE P3 ADR r4, e ADD r1, r2, r3 BE P1

What is the difference between the Harvard structure and the von Neumann structure Explain why many DSPs use Harvard architecture. CPU Data Program Memory Memory

In many Interrupt Service Routine (ISR), the last instruction of an ISR is BX LR. For a regular subroutine return, BX LR simply puts LR into PC. For an interrupt return BX LR does something different. How does BX LR know not to put LR into PC, and instead what does BX LR do

Consider this C statement if (a b 30) x 70 else x 100 Translate it to ARM assemble language code. M

Select one O a. O O O O b. n1 2 e. 2 2 d. Cannot be determined n1 2,Let Cr be the number of comparisons that will be done in a successful search of linear search, and assuming that each key is unique and is equally likely to be the one that is being searched, what is the average value for Cn (n is the number of elements)

4. If the modulo function is used as the hash function, then which of the following is an ideal table size A. 17 B. 25 C. 23 D. 15 E. 18

Consider the following The size of the table is 5 The hash function h(k) uses the division method The collision resolution policy is open addressing The probe function p(k) h(k)2i mod 5 for i 0, 1, 2, 3, 4 The following records are inserted (191. HELLO). (201. HI). (293. GOOD). (372. GOOD). (202. DAY). (182. TODAY). (276, RAINY). (715. SUNNY).

Assume that the moduto function is used as hash function, then which table index would have its first collision if the size of the table is 19 and the inputs are 1801. 1921, 2817. 2882. 9181, 17261, 1871 and 1892 Select one O a. 2 O b.1 O C5 O d.g e.7 O

The human foot uses a combination of forces from bones, ligaments, and muscles. Examine a simple mechanical model in equilibrium below, with only 3 forces, T, B, and N. The length of the foot is f. Assume that the tension, T, from the Achilles tendon is pulling on the back of the foot at point from the rotation axis of the ankle. If the person

1. Consider a mass m moving under the influence of a central potential U . From first principles, construct the Hamiltonian in terms of the action variables I, and Io. The use of complex methods is optional, and is probably easier. Using the actionangle formulation, show that TrTo only when k 0. Based on the actionangle description, sketch the

On a frictionless air table in the lab you measure the velocities of two blocks as v1 = (3i+ 3j) m/s, and v2 = (3i3j) m/s. The masses of the blocks are m1 = 2kg and m2 = 1kg. The initial positions of the two blocks are r1,0 = i m and r2,0 = (i + 6j) m. (a) What are the vector positions of the two particles, r1(t) and r2(t) as they move across the

A 7.8 kg mass moves along a frictionless track in a circular loop of radius 6.0 m. At the top of the loop, the mass is inverted and barely completes the loop. What normal force acts on the mass when it reaches the bottom of the loop?

3. Find the tension in each wire, neglecting the masses of the wires. (2 points) 45 System of interest 0 NO 4. Calculate the speed at which an 80 m radius curve banked at 35 should be driven if the road is frictionless. (2 points) W N sin 8 Fc Fnet T 30 150 N W N cos 0 W,3. Find the tension in each wire, neglecting the masses of the wires. (2

A 2 kg toy car is moving along the frictionless path shown below. A D V 10 ms 10 m A B Kinetic Energy woo V 3 m Use the information given to fill in the values for the Kinetic, Potential and Total energies at the different points on the path (Use g10 ms). Do not include units in your answers. Assume Energy Conservation. 15 m Potential Energy D I

The switch is closed and this circuits capacitor is allowed to fully charge. After the capacitor is fully charged, find (a) the current flowing through R3 and (b) the voltage across the capacitor (magnitude, as well as sides). (c) Now, the switch is opened and the capacitor is allowed to discharge through the resistors. How long does it take the

On the basis of the data presented below in the table, estimate the fractions of Earths volume represented by (a) the inner core, (b) the outer core. (c) the mantle, and (d) the crust. r is the inner and r2 is the outer radius of the Earths layers. (6 marks).,Layer Crust Mantle Outer Core Inner Core 6348 3488 1278 P. 6378 6348 3488 1278

A massless rod of length L is attached to the wall. A horizontal rope holds the rod at an angle of 30 degrees above the horizontal. A sign of mass m15 kg is hanging from the end of the rod. What is the tension in the horizontal rope Open p

A pilot of mass m = 85 kg in a jet aircraft executes a loop-the-loop. In this manoeuvre, the aircraft moves in a vertical circle R = 2.5 km at a constant speed of v = 211 m/s. Determine the force exerted (in units of N) by the seat on the pilot at the top of the loop?

A steel railway wheel (alpha = 12E-6 mm/mm/C) has a 19.5 cm diameter hole (measured at 20C) machined to accept the axle shaft. If the wheel is heated to 618C for installation, what will the size of the hole be?

South America's highest recorded temperature is 120F, measured in 1905 in Rivadavia, Argentina. Its lowest recorded temperature is -27.0F, measured in 1907 in Sarmiento, Argentina. (a)Convert the record high temperature to the Celsius scale, then to the Kelvin scale. (b) Convert the record low temperature to Celsius, then to Kelvin.

A particle of mass m is acted on by a force whose potential energy is U (r). (a) Obtain the Lagrangian function in a spherical coordinate system which is rotating with constant angular speed 2 about the zaxis. (b) Show that your Lagrangian function has the same form as in a fixed coordinate system with the addition of a velocitydependent potential

A student drops two metallic objects into a 120-g steel container holding 150g of water at 25C. One object is a 194-g cube of copper that is initially at 83C, and the other is a chunk of aluminum that is initially at 5.0C. To the surprise of the student, the water reaches a final temperature of 25C, precisely where it started. What is the mass of

If a planetary nebula expands at a rate of 33 km s and has a lifetime of 23300 years, how large will it grow before it stops being visible?

A large balloon of mass 223 kg is filled with helium gas until its volume is 319 m3. Assume the density of air is 1.29 kg/m3 and the density of helium is 0.179 kg/m3. (a) Draw a force diagram for the balloon. b) Calculate the buoyant force acting on the balloon. c) Find the net force on the balloon. Determine whether the balloon will rise or fall

On one side of a diverging lens of focal length 46.2 cm, you position an object of height 4.25 cm somewhere along the principal axis. The resultant image has a height of 1.28 cm. How far from the lens is the object located

Review each scenario listed in Data Table 1. Record the net force (0 or nonzero) of each scenario in Data Table 1. Explain why the net force is 0 or nonzero for each scenario and record in Data Table 1. Record the Newtons law of motion (1st, 2nd, or 3rd) that is best demonstrated by each scenario in Data Table 1. Explain in detail how each

(4) Given h200 W(mK), h 100 W(mK), t 120 C, 1 20 C, 81 m, 20.985 W(m K), A 200 m. Find the overall heattransfer coefficient, thermal resistance per area and total heat transfer rate. h, ta fwl linin

A pilot with mass m 84.5 kg flies in a vertical, circular loop of radius R 16.5 m as shown in the figure. At the bottom of the loop, his speed is v 18.0 ms. What is the magnitude of the normal force experienced by the pilot at the bottom of the loop Give your answer in kiloNewtons to two decimal places. 12

A pilot with mass m 83.0 kg flies in a vertical, circular loop of radius R 19.0 m as shown in the figure. At the top of the loop, his speed is v 19.0 ms. What is the magnitude of the normal force experienced by the pilot at the top of the loop Give your answer in Newtons as an integer.

The force of the ruler on the ball is called an applied force. The force of the barrier on the ball is called a normal force. Both of these forces are exerted by surfaces, and the direction of force is at a right angle to the surface. The difference is that an applied force is exerted by a moving object and a normal force is exerted by a

(1) Given the three cycles operating between a high temperature heat source at 527 C and a low temperature heat source at 27 C, please supplement the table below and determine whether the three cycles are reversible, irreversible, or impossible. Cycle No. 1 2 3 Absorption heat qu (kJ) 1106 1106 Release heat q2 (kJ) Work Wo (kJ) 3x105 110 3.75105

On one side of a converging lens of focal length 27.7cm, you position an object of height 2.81cm somewhere along the principal axis. The resultant image has a height of 7.03cm. How far from the lens is the object located?

In front of a spherical convex mirror of radius 57.5cm, you position an object of height 3.37cm somewhere along the principal axis. The resultant image has a height of 1.35cm. How far from the mirror is the object located?

Derive the BoseEinstein distribution function by using the microcanonical ensemble method.(where total number of bosons and total amount of energy are fixed). Let g is the number of degeneracy of energy and n is the number of bosons which have energy E.

The graph below shows the force applied by an airbag to the passenger of a car when the car suffers a collision as a function of timenote the horizontal axis is measured in milliseconds. 2000 FA 1000 50 100 Time (ms) Air bag Force (N) 1. Between what times is the airbag being compressed by the passenger and when is the airbag at maximum

The sound level a distance of 42 m from an isotropic point source is 60 dB. What are (a) the intensity and (b) the total power radiated by the source?

A total current of 73 mA flows through an in finitely long cylinderical conductor of radius r 2 cm which has an infinitely long cylin drical hole through it with a diameter equal to r centered at along the xaxis as shown. 2 I What is the magnitude of the magnetic field at a distance of 18 cm along the positive axis The permeability of free space

The Schwarzschild radius is the distance from an object at which the escape velocity is equal to the speed of light. A black hole is an object that is smaller than its Schwarzschild radius, so not even light itself can escape a black hole. The Schwarzschild radius r depends on the mass m of the black hole according to the equation 2Gm 2. where

You measure a sound level (at your location) of approximately 109 dB from a firework exploding 25 m away from you. Assuming that your ear has an effective radius of about 2.8 cm, what is the total power received by your ear?

A fishbowl has a radius of curvature of 7.0 cm. A beta fish is swimming inside the bowl. As you stand outside of the bowl, the fish appears to be swimming in the water 6.0 cm away from the wall of the bowl. How far from the wall of the bowl is the fish actually swimming? The index of refraction of water is 1.33 and the index of refraction of air