All Matches

Solution Library

Expert Answer

Textbooks

Search Textbook questions, tutors and Books

Oops, something went wrong!

Change your search query and then try again

Result Not Found

Books FREE
Tutors
Study Help
Hire a Tutor
AI Study Help New

Search
Sign In
Register

study help
physics
college physics a strategic approach 2nd

Questions and Answers of College Physics A Strategic Approach 2nd

17. ••• The decay series for neptunium-237 is shown in▼ Figure 29.18. (a) What is the decay mode of each of the decays? (b) Determine the daughter nucleus at the end of each decay. Neutron
26. ••• When the surface of a particular material is illuminated with monochromatic light of various frequencies, the experimental stopping potentials as a function of light frequency are
21. •• ▼ Figure 27.16 shows data of stopping potential versus frequency for a certain material. Use the graph to determine (a) Planck’s constant and (b) the work function of that material. 3
19. •• Two parallel plates are separated by a small distance as illustrated in ▼ Figure 24.32. If the top plate is illuminated with light from a He–Ne laser(λ = 632.8 nm), for what minimum
53. •• Using ▶ Figure 23.29, derive (a) the thin lens equation and (b) the magnification equation for a thin lens.[Hint: Use similar triangles.] Object ho ho do d- Image
3. Day–night rearview mirrors are common in cars. At night, when you tilt the mirror backward, the intensity and glare of headlights behind you are reduced(▶ Figure 23.25). The mirror is
33. IE •• A beam of light is to undergo total internal reflection through a 45°–90°–45° prism (▼ Figure 22.28).(a) Will this arrangement depend on (1) the index of refraction of the
33. IE •• A beam of light is to undergo total internal reflection through a 45°–90°–45° prism (▼ Figure 22.28).(a) Will this arrangement depend on (1) the index of refraction of the
25. •• (a) An object immersed in water appears closer to the surface than it actually is. What is the cause of this illusion?(b) Using ▼ Figure 22.27, show that the apparent depth for small
45. IE ••• (a) If the circuit in ▶ Figure 21.14 is in resonance, the impedance of the circuit is (1) greater than 25 Ω,(2) equal to 25 Ω, (3) less than 25 Ω. Explain.(b) If the driving
48. ••• A supersonic jet flies directly overhead relative to an observer, at an altitude of 2.0 km (▼ Figure 14.18).When the observer finally hears the first sonic boom, the plane has flown a
46. ••• A bystander hears a siren vary in frequency from 476 Hz to 404 Hz as a fire truck approaches, passes, and then moves away on a straight street (▼ Figure 14.17).What is the speed of
34. •• At a Fourth of July celebration, a firecracker explodes (▼ Figure 14.16). Considering the firecracker to be a point source, what are the intensities heard by observers at points B, C,
44. •• ▼ Figure 13.25a shows a snapshot of a wave on a rope, and Figure 13.25b describes the position as a function of time of a fixed point on that rope. (a) What is the amplitude of the wave?
26. IE •• The oscillations of two oscillating massspring systems are graphed in ▼ Figure 13.24. The mass in System A is four times that in System B.(a) Compared with System B, System A has (1)
13. Sometimes wheat in a field can be seen swaying when a breeze blows. What type of motion are these stalks undergoing, transverse or longitudinal? Explain. wwwwww wwww ww wwwwwwwwwww.
58. •• The working substance of a cyclic heat engine is 0.75 kg of an ideal gas. The cycle consists of two isobaric processes and two isometric processes, as shown in ▼ Figure 12.27. What would
18. ••• One mole of an ideal gas is taken through the cyclic process in ▶ Figure 12.26. (a) Compute the work done during each of the processes. (b) Find ΔEth, Wgas, and Q for the complete
17. IE ••• 100 mol of an ideal monatomic gas is compressed as shown in ▼ Figure 12.25. (a) Is the work done by the gas (1) positive, (2) zero, or (3) negative?Explain. (b) How much work is
10. •• A fixed quantity of ideal gas undergoes a series of processes shown in the p-V diagram in ▼ Figure 12.24.How much work is done in each process? Pressure (Pa) 1.00 x 105 2 0.50105 3 V
9. IE •• An ideal gas is taken through the processes shown in ▼ Figure 12.23. (a) Is the overall change in the thermal energy of the gas (1) positive, (2) zero, or (3) negative?Explain. (b) In
7. An ideal gas initially at temperature To, pressure po, and volume Vo is compressed to one-half its initial volume.As shown in ▼ Figure 12.22, it undergoes three processes always restarting at
3. In ▼ Figure 12.21, the plunger of a syringe is pushed in quickly, and small pieces of paper at the bottom of the syringe get hot enough to catch fire. Explain this using the first law of
56. •• Solar heating takes advantage of solar collectors such as in ▼ Figure 11.18. During daylight hours, the average intensity of solar radiation at the top of the atmosphere is about 1400
41. ••• As heat is added to one kilogram of a substance, the data results in the T-versus-Q graph of ▼ Figure 11.17.(a) What are its melting and boiling points? In SI units, what are (b) the
Using the data and result of Exercise 51, calculate the pressure difference between the two areas of the aorta. (Blood density: \(ho=1.05 \times 10^{3} \mathrm{~kg} / \mathrm{m}^{3}\).)
According to Bernoulli's equation, if the pressure on the liquid in Figure 9.19 is increased, (a) the flow speed always increases, (b) the height of the liquid always increases, (c) both the flow
A 75.0-kg man stands in the far end of a 50.0-kg boat 100 m from the shore, as illustrated in ▼Figure 6.19. If he walks to the other end of the 6.00-m-long boat, (a) does the CM (1) move to the
A dumbbell (▶ Figure 6.18) has a connecting bar of negligible mass. Find the location of the center of mass (a) if m1 and m2 are each 5.0 kg and (b) if m1 is 5.0 kg and m2 is 10.0 kg. THINKING IT
Three masses – 2.0 kg, 3.0 kg, and 6.0 kg – are located at positions (3.0, 0), (6.0, 0), and (−4.0, 0), respectively, in meters from the origin (Figure 6.17). Where is the center of mass of
A novelty collision device, as shown in Figure 6.15, consists of five identical metal balls. When one ball swings in, after multiple collisions, one ball swings out at the other end of the row of
Two balls of equal mass, with equal but opposite velocities, approach each other for a head-on elastic collision. (a) After collision, the balls will (1) move off stuck together, (2) both be at rest,
A 30-g bullet with a speed of 400 m/s strikes a glancing blow to a target brick of mass 1.0 kg. The brick breaks into two fragments. The bullet deflects at an angle of 30° above the +x-axis and has
The pre-collision conditions for two elastic collisions are shown in ▶ Figure 6.14. What are the final velocities in each case? THINKING IT THROUGH. These collisions are direct applications of
A 1.0-kg ball with a speed of 4.5 m/s strikes a 2.0-kg stationary ball. If the collision is completely inelastic, (a) what are the speeds of the balls after the collision? (b) What percentage of the
A physicist is lowered from a helicopter to the middle of a smooth, level, frozen lake, the surface of which has negligible friction, and is challenged to make her way off the ice. Walking is out
Two masses, m1 = 1.0 kg and m2 = 2.0 kg are held on either side of a light-compressed spring by a light string joining them, as shown in Figure 6.9. The string is burned (negligible external force),
A 70.0-kg worker jumps stiff-legged from a height of 1.00 m onto a concrete floor. (a) What is the magnitude of the impulse he feels on landing, assuming a sudden stop in 8.00 ms? (b) What is the
A golfer drives a 0.046-kg ball from an elevated tee, giving the ball an initial horizontal speed of 40 m/s (about 90 mi/h). What is the magnitude of the average force exerted by the club on the ball
What is the total momentum for each of the systems of particles illustrated in ▶ Figure 6.2a and b? THINKING IT THROUGH. The total momentum is the vector sum of the individual momenta (Equation
Consider the three objects shown in ▼ Figure 6.1: a 0.22-caliber bullet (mass 10−3 kg and velocity 102 m/s), a cruise ship (mass 108 kg and velocity 101 m/s), and a glacier (mass 1012 kg and
A 100-kg football player runs with a velocity of 4.0 m/s straight down the field. A 1.0-kg artillery shell leaves the barrel of a gun with a muzzle velocity of 500 m/s. Which has the greater momentum
A pump lifts \(200 \mathrm{~kg}\) of water per hour at a height of \(5.0 \mathrm{~m}\). What is the minimum necessary power output rating of the water pump in watts and horsepower?
In Exercise 38, if the skier has a mass of 60 kg and the force of friction retards his motion by doing 2500 J of work, what is his speed at the bottom of the slope?
A hiker plans to swing on a rope across a ravine in the mountains, as illustrated in ▼ Figure 5.32, and to drop when she is just above the far edge. (a) At what horizontal speed should she be
A block with a mass \(m_{1}=6.0 \mathrm{~kg}\) sitting on a frictionless table is connected to a suspended mass \(m_{2}=2.0 \mathrm{~kg}\) by a light string passing over a frictionless pulley.
A vertical spring with a force constant of 300 N/m is compressed 6.0 cm and a 0.25-kg ball is placed on top. The spring is released and the ball flies vertically upward. How high does the ball go?
A \(0.50-\mathrm{kg}\) mass is suspended on a spring that stretches \(3.0 \mathrm{~cm}\).(a) What is the spring constant?(b) What added mass would stretch the spring an additional \(2.0
A 1.5-kg box that is sliding on a frictionless surface with a speed of 12 m/s approaches a horizontal spring. (See Figure 5.21.) The spring has a spring constant of 2000 N/m. If one end of the spring
Suppose the simple pendulum in Exercise 40 were released from an angle of 60°. (a) What would be the speed of the bob at the bottom of the swing? (b) To what height would the bob swing on the other
A simple pendulum has a length of 0.75 m and a bob with a mass of 0.15 kg. The bob is released from an angle of 25° relative to a vertical reference line (▼ Figure 5.31). (a) Show that the
A roller coaster travels a frictionless track as shown in ▼ Figure 5.30. (a) If the speed of the roller coaster at point A is 5.0 m/s, what is its speed at point B? (b) Will it reach point C? (c)
A skier coasts down a very smooth, \(10-\mathrm{m}\)-high slope similar to the one shown in Figure 5.23. If the speed of the skier on the top of the slope is \(5.0 \mathrm{~m} / \mathrm{s}\), what
What is the maximum height reached by the ball in Exercise 33?
• How much more gravitational potential energy does a 1.0-kg hammer when it is on a shelf 1.2 m high then when it is on a shelf 0.90 m high?
The stopping distance of a vehicle is an important safety factor. Assuming a constant braking force, use the work-energy theorem to show that a vehicle's stopping distance is proportional to the
A \(2.00-\mathrm{kg}\) mass is attached to a vertical spring with a spring constant of \(250 \mathrm{~N} / \mathrm{m}\). A student pushes the mass vertically upward with her hand while.slowly
A spring with a force constant of \(50 \mathrm{~N} / \mathrm{m}\) is to be stretched from 0 to \(20 \mathrm{~cm}\).(a) The work required to stretch the spring from 10 to \(20 \mathrm{~cm}\) is (1)
Compute the work done by the variable force in the graph of F versus x in ▼ Figure 5.29. 8.0 60 4.0 2.0 Force N Distance (m) 8 0 1.0 2. 3.0 4.0 5.0 -2.0 -4.0 -6.0 -8.0 FIGURE 5.29 How much work
the crate is dragged 3.0 m along a rough floor with a constant velocity by a worker applying a force of 500 N to a rope at an angle of 30° to the horizontal. (a) How many forces are acting on the
A 0.50-kg shuffleboard puck slides a distance of 3.0 m on the board. If the coefficient of kinetic friction between the puck and the board is 0.15, what work is done by the force of friction?
A block on a level frictionless surface has two forces applied, as shown in ▼ Figure 5.28. (a) What force F2 would cause the block to move in a straight line to the right?(b) If the block moves
A father pushes horizontally on his daughter's sled to move it up a snowy incline, as illustrated in Figure 5.27b. If the sled moves up the hill with a constant velocity, how much work is done by the
Suppose the coefficient of kinetic friction between the block and the plane in Exercise 4 is 0.275. What would be the net work done in this case?
A passenger at an airport pulls a rolling suitcase by its handle. If the force used is \(10 \mathrm{~N}\) and the handle makes an angle of \(25^{\circ}\) to the horizontal, what is the work done by
If a person does \(50 \mathrm{~J}\) of work in moving a \(30-\mathrm{kg}\) box over a \(10-\mathrm{m}\) distance on a horizontal surface, what is the minimum force required?
Two students who weigh the same start at the same ground floor location at the same time to go to the same classroom on the third floor by different routes. If they arrive at different times, which
If a spring is stretched from its position from xo to x, what is the change in potential energy then proportional to? (Express the answer in terms of xo and x.)
Consider a 2.0-hp motor and a 1.0-hp motor. Compared to the \(2.0-\mathrm{hp}\) motor, for a given amount of work, the \(1.0 \mathrm{hp}\) motor can(a) do twice as much work in half the time,(b) half
Which of the following is not a unit of power:(a) J/s(b) W⋅s(c) W(d) hp
Two identical stones are thrown from the top of a tall building. Stone 1 is thrown vertically downward with an initial speed v, and Stone 2 is thrown vertically upward with the same initial speed.
The two springs are identical except for their spring constants, k2 > k1. If the same force is used to stretch the springs.(a) spring 1 will be stretched farther than spring 2(b) spring 2 will be
The speed of a pendulum is greatest(a) when the pendulum’s kinetic energy is a minimum(b) when the pendulum’s acceleration is a maximum(c) when the pendulum’s potential energy is a minimum(d)
If a nonconservative force acts on an object, and does work, then(a) the object’s kinetic energy is conserved(b) the object’s potential energy is conserved(c) the mechanical energy conserved(d)
A change in gravitational potential energy:(a) is always positive,(b) depends on the reference point,(c) depends on the path,(d) depends only on the initial and final positions.
The reference point for gravitational potential energy may be(a) zero(b) negative(c) positive(d) all of the preceding
A change in gravitational potential energy(a) is always positive(b) depends on the reference point(c) depends on the path(d) depends only on the initial and final positions
Two identical cars, A and B, traveling at 55 mi/h collide head-on. A third identical car, C, crashes into a brick wall going 55 mi/h. Which car has the least damage:(a) car A(b) car B(c) car C(d) all
If the angle between the net force and the displacement of an object is greater than 90°,(a) kinetic energy increases(b) kinetic energy decreases(c) kinetic energy remains the same(d) the object
Which of the following is a scalar quantity:(a) work(b) force(c) kinetic energy(d) both a and c
The newton unit of force is equivalent to(a) \(\mathrm{kg} \cdot \mathrm{m} / \mathrm{s}\),(b) \(\mathrm{kg} \cdot \mathrm{m} / \mathrm{s}^{2}\),(c) \(\mathrm{kg} \cdot \mathrm{m}^{2} /
Which one of the following has units of work:(a) N(b) N/s(c) J⋅s(d) N⋅m
Work done in free fall(a) is only positive(b) is only negative(c) can be either positive or negative
A pitcher throws a fastball. When the catcher catches it,(a) positive work is done(b) negative work is done(c) the network is zero
For a particular force and displacement, most work is done when the angle between them is(a) 30°(b) 60°(c) 90°(d) 180°
The units of work are(a) \(\mathrm{N} \cdot \mathrm{m}\),(b) \(\mathrm{kg} \cdot \mathrm{m}^{2} / \mathrm{s}^{2}\),(c) \(\mathrm{J}\),(d) all of the preceding.
The motor of an electric drill with an efficiency of 80% has a power input of 600 W. How much useful work is done by the drill in 30 s?THINKING IT THROUGH. Given the efficiency and power input, the
The motors of two vacuum cleaners have net power outputs of 1.00 hp and 0.500 hp, respectively. (a) How much work in joules can each motor do in 3.00 min? (b) How long does each motor take to do 97.0
A crane hoist like the one shown in ▶ Figure 5.25 lifts a load of 1.0 metric ton a vertical distance of 25 m in 9.0 s at a constant velocity. How much useful work is done on the load by the hoist
A 0.75-kg block slides on a frictionless surface with a speed of 20 m/s. It then slides over a rough area 1.0 m in length and onto another frictionless surface. The coefficient of kinetic friction
A skier with a mass of 80 kg starts from rest at the top of a slope and skis down from an elevation of 110 m (▶ Figure 5.23). The speed of the skier at the bottom of the slope is 20 m/s. (a) Show
A 0.30-kg block sliding on a horizontal frictionless surface with a speed of 2.5 m/s, as depicted in ▼ Figure 5.21, strikes a light spring that has a spring constant of 3.0 × 103 N/m. (a) What is
Three balls of equal mass m are projected with the same speed in different directions, as shown in ▼ Figure 5.20. If air resistance is neglected, which ball would you expect to strike the ground
A painter on a scaffold drops a 1.50-kg can of paint from a height of 6.00 m. (a) What is the kinetic energy of the can when the can is at a height of 4.00 m? (b) With what speed will the can hit the
A static, uniform liquid is on one side of a double container as shown in \(abla\) Figure 5.19a. If the valve is open, the level will fall, because the liquid has (gravitational) potential energy.
A 0.50-kg ball is thrown vertically upward with an initial velocity of 10 m/s (▼ Figure 5.17). (a) What is the change in the ball’s kinetic energy between the starting point and the ball’s
To walk 1000 m on level ground, a 60-kg person requires an expenditure of about 1.0 × 105 J of energy. What is the total energy required if the walk is extended another 1000 m along a 5.0° incline
In a football game, a \(140-\mathrm{kg}\) guard runs at a speed of \(4.0 \mathrm{~m} / \mathrm{s}\), and a \(70-\mathrm{kg}\) free safety moves at \(8.0 \mathrm{~m} / \mathrm{s}\). Which of the
A shuffleboard player (▶ Figure 5.13) pushes a 0.25-kg puck that is initially at rest such that a constant horizontal force of 6.0 N acts on it through a distance of 0.50 m. (Neglect friction.) (a)
A 0.15-kg mass is attached to a vertical spring and hangs at rest a distance of 4.6 cm below its original position (▼ Figure 5.9). An additional 0.50-kg mass is then suspended from the first mass

Showing 1 - 100 of 3513

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Last

Services

Sitemap
Fun
Definitions
Become Tutor
Study Help Categories
Recent Questions
Expert Questions

Company Info

Security
Copyrights
Privacy Policy
Terms & Conditions
SolutionInn Fee
Scholarship

Get In Touch

About Us
Contact Us
Career
Jobs
FAQ
Campus Ambassador

Secure Payment

Download Our App

© 2024 SolutionInn. All Rights Reserved