The 280-kg, 6-m-wide rectangular gate shown in Fig. P11??52 is hinged at B and leans against the floor at A making an angle of 45? with the horizontal. The gate is to be opened from its lower edge by...

Three horizontal ropes pull on a large stone stuck in the ground, producing the vector forces A, B, and C shown in Fig. P1.66. Find the magnitude and direction of a fourth force on the stone that...

A computer IC chip consumes 10 W of power, which is dissipated as heat. The chip measures 4 cm by 4 cm on a side and is 0.5-cm thick. Currently, the IC chip is packaged into an electronic device as...

What is the force F on the 1.0 nC charge in the middle of FIGURE P22.44 due to the four other charges? Give your answer in component form. -2.0 nC 2.0 nC 1.0 cm 1.0 cm -1.0 nC -2.0 nC 2.0 nC FIGURE...

What is the force F on the 5.0 nC charge in FIGURE P22.43? Give your answer as a magnitude and an angle measured cw or ccw (specify which) from the +x@axis. 10 nC 3.0 cm 4.0 cm 5.0 nC -5.0 nC FIGURE...

A 6-mm-diameter electrical transmission line carries an electric current of 50 A and has a resistance of 0.002 ohm/m length. Determine the surface temperature of the wire during a windy day when the...

A 0.2-cm-thick, 10-cm-high, and 15-cm-long circuit board houses electronic components on one side that dissipate a total of 15 W of heat uniformly. The board is impregnated with conducting metal...

A spherical balloon with a volume of 2.5 L is in a 45 mT uniform, vertical magnetic field. A horizontal elastic but conducting wire with 2.5 resistance circles the balloon at its equator. Suddenly...

To defog the rear window of an automobile, a very thin transparent heating element is attached to the inner surface of the window. A uniform heat flux of 1300 W/m 2 is provided to the heating element...

In a pharmaceutical plant, a copper pipe (k c = 400 W/m·K) with inner diameter of 20 mm and wall thickness of 2.5 mm is used for carrying liquid oxygen to a storage tank. The liquid oxygen...

A process stream is heated using a shell and tube heat exchanger. The exit temperature is controlled by adjusting the steam control valve shown in Fig. E12.5. During an open-loop experimental test,...

FIGURE P26.41 is an edge view of three charged metal electrodes. Let the left electrode be the zero point of the electric potential. What are V and E at (a) X = 0.5 cm, (b) X = 1.5 cm, (c) X = 2.5...

The pendulum shown in FIGURE P15.57 is pulled to a 10° angle on the left side and released. a. What is the period of this pendulum? b. What is the pendulums maximum angle on the right side? 12 cm...

Consider the schematic diagram of a controlled blending process shown in Fig. 8.1. The control objective is to control the mass fraction of the exit stream, x, by adjusting inlet flow rate, w 2 ,...

The axle in Figure EX12.21 is half the distance from the center to the rim. What is the net torque about the axle? 5.0 kg 30 cm 15 kg |10 kg FIGURE EX12.21

Three cars are driving at 25 m/s along the road shown in FIGURE EX8.30. Car B is at the bottom of a hill and car C is at the top. Both hills have a 200 m radius of curvature. Suppose each car...

Water at 10C ( = 999.7 kg/m 3 and = 1.307 10 -3 kg/ms) is flowing steadily in a 0.12-cm-diameter, 15-m-long pipe at an average velocity of 0.9 m/s. Determine (a) The pressure drop, (b) The head...

A rigid, hollow sphere is submerged in boiling water in a room where the air pressure is 1.0 atm. The sphere has an open valve with its inlet just above the water level. After a long period of time...

In an experiment to measure convection heat transfer coefficients, a very thin metal foil of very low emissivity (e.g., highly polished copper) is attached on the surface of a slab of material with...

A water tank heating process shown in Fig. E16.4 controls the outlet temperature at a desired set point T SP by manipulating the steam pressure P S of steam sent to the tank heat exchanger. The steam...

What are the strength and direction of the electric field at the position indicated by the dot in FIGURE P23.37? Give your answer (a) In component form. (b) As a magnitude and angle measured cw or...

Water enters one end of a perforated pipe 0.2 m in diameter with a velocity of 6 m/s. The discharge through the pipe wall is approximated by a linear profile. If the flow is steady, find the...

If the Sun were the size of a beach ball, Earth would be the size of a green pea 110 m away. Show that the nearest star, Alpha Centauri (4.4 light-years away), would be about 30,000 km distant. (Find...

A sphere of radius R and surface charge density is positioned with its center distance 2R from an infinite plane with surface charge density . At what distance from the plane, along a line toward...

FIGURE P23.43 shows a thin rod of length L with total charge Q. a. Find an expression for the electric field strength at point P on the axis of the rod at distance r from the center.b. Verify that...

An electronic PI temperature controller has an output p of 12 mA when the set point equals the nominal process temperature. The controller response to step change in the temperature set point of 2.5...

Rank the following organic molecules in order of increasing solubility in water: (b) (c) (a)

Consider the process shown in the figure below, where carbon monoxide (CO) gas is being oxidized to carbon dioxide (CO 2 ). This process is similar to how the catalytic converter in your car works to...

A 4-m-high and 6-m-long wall is constructed of two large 2-cm-thick steel plates (k = 15 W/m·K) separated by 1-cm-thick and 20-cm wide steel bars placed 99 cm apart. The remaining space...

FIGURE P23.44 shows a thin rod of length L with total charge Q. Find an expression for the electric field E at point P. Give your answer in component form. P FIGURE P23.44 + + + + + + + + +

FIGURE P24.47 shows an infinitely wide conductor parallel to and distance d from an infinitely wide plane of charge with surface charge density η. What are the electric fields E 1 to E...

In descending order, rank the rocks in terms of their susceptibility to chemical erosion: (a) Marble, (b) Limestone, (c) Sandstone, (d) Quartzite.

FIGURE CP7.58 shows three hanging masses connected by massless strings over two massless, frictionless pulleys. (a) Find the acceleration constraint for this system. It is a single equation relating...

A frustum-shaped body is rotating at a constant angular speed of 200 rad/s in a container filled with SAE 10W oil at 20°C (μ = 0.100 Pas), as shown in Fig. P1032. If the thickness...

What are the magnetic fields at points a to c in FIGURE EX29.12? Give your answers as vectors. (m) 10 A 1 Long wires a b -x (cm) 2 -1 10 A FIGURE EX29.12

The water level in a tank is 15 m above the ground. A hose is connected to the bottom of the tank, and the nozzle at the end of the hose is pointed straight up. The tank cover is airtight, and the...

FIGURE EX17.2 is a snapshot graph at t = 0 s of two waves approaching each other at 1.0 m/s. Draw six snapshot graphs, stacked vertically, showing the string at 1 s intervals from t = 1 s to t = 6 s....

A uniform, 8.0-m, 1150-kg beam is hinged to a wall and supported by a thin cable attached 2.0 m from the free end of the beam (Fig. P11.46). The beam is supported at an angle of 30.0° above the...

An open well contains water contaminated with volatile benzene at the bottom of the well, with dimensions shown in the figure on page 525. The concentration of dissolved benzene in the water is 156...

Flat-plate solar collectors are often tilted up toward the sun in order to intercept a greater amount of direct solar radiation. The tilt angle from the horizontal also affects the rate of heat loss...

What is the force F on the -10 nC charge in FIGURE P22.42? Give your answer as a magnitude and an angle measured cw or ccw (specify which) from the +x@axis. 8.0 nC 3.0 cm +) 1.0 cm -10 nC 10 nC...

a. A liquid of density r flows at speed v0 through a horizontal pipe that expands smoothly from diameter d 0 to a larger diameter d 1 . The pressure in the narrower section is p 0 . Find an...

The 0.5-m-radius semi-circular gate shown in the figure is hinged through the top edge AB. Find the required force to be applied at the center of gravity to keep the gate closed. = 80 kPa (abs) alr...

A thin (1.0-mm-thick) coat of fresh paint has just been sprayed over a 1.5-m by 1.5-m square steel body part, which approximates a flat surface. The paint contains a volatile solvent that initially...

A 1-m-tall barrel is filled with water (with a weight density of 9800 N/m 3 ). Show that the water pressure on the bottom of the barrel is 9800 N/m 2 , or, equivalently, 9.8 kPa. Pressure = weight...

An engineered tissue system consists of a flat plate of cell mass immobilized on a scaffold measuring 5 cm in length, and is 0.5 cm thick. The bottom face of the scaffold is exposed to water and...

A 100 g ball on a 60-cm-long string is swung in a vertical circle about a point 200 cm above the floor. The tension in the string when the ball is at the very bottom of the circle is 5.0 N. A very...

Identical-size lead and aluminum cubes are suspended at different depths by two wires in a large vat of water (Fig. Q12.30). (a) Which cube experiences a greater buoyant force? (b) For which cube is...

FIGURE EX34.16 shows a transparent hemisphere with radius R and index of refraction n. What is the maximum distance d for which a light ray parallel to the axis refracts out through the curved...

The Arnold Diffusion Cell shown in Figure 26.5 is a simple device used to measure gas-phase diffusion coefficients for volatile substrates in air. In the present experiment, liquid acetone is loaded...

A very large tank contains air at 102 kPa at a location where the atmospheric air is at 100 kPa and 20C. Now a 2-cm-diameter tap is opened. Determine the maximum flow rate of air through the hole....

A plastic rod with linear charge density is bent into the quarter circle shown in FIGURE P23.48. We want to find the electric field at the origin. a. Write expressions for the x-and y-components of...

n moles of an ideal gas at temperature T 1 and volume V 1 expand isothermally until the volume has doubled. In terms of n, T 1 , and V 1 , what are (a) The final temperature, (b) The work done on the...

It has recently become possible to weigh DNA molecules by measuring the influence of their mass on a nano-oscillator. FIGURE P15.54 shows a thin rectangular cantilever etched out of silicon (density...

The tank shown in FIGURE CP14.72 is completely filled with a liquid of density Ï. The right face is not permanently attached to the tank but, instead, is held against a rubber seal by the...

You have one object of each of these shapes, all with mass 0.840 kg: a uniform solid cylinder, a thin-walled hollow cylinder, a uniform solid sphere, and a thin-walled hollow sphere. You release each...

A 12 V car battery dies not so much because its voltage drops but because chemical reactions increase its internal resistance.A good battery connected with jumper cables can both start the engine and...

The density of a liquid is to be determined by an old 1-cm-diameter cylindrical hydrometer whose division marks are completely wiped out. The hydrometer is first dropped in water, and the water level...

Consider the composite solid shown. Solid A is a thermally conductive material that is 0.5-cm thick and has a thermal conductivity, k A = 50 W/m K. The back side of solid A (x = 0) is thermally...

The century-old ascensores in Valparaiso, Chile, are picturesque cable cars built on stilts to keep the passenger compartments level as they go up and down the steep hillsides. As FIGURE P7.43 shows,...

What do the compounds cyclopropane and propene have in common? Cyclopropane Propene

A 50-cm à 30-cm à 20-cm block weighing 150 N is to be moved at a constant velocity of 0.80 m/s on an inclined surface with a friction coefficient of 0.27. (a) Determine the force F that...

A 5-mm-thick stainless steel strip (k = 21 W/m·K, Ï = 8000 kg/m 3 , and c p = 570 J/kg·K) is being heat treated as it moves through a furnace at a speed of 1 cm/s. The air...

Consider the drug patch shown in the figure on the next page. The drug patch consists of a pure drug source mounted on top of a gel diffusion barrier. The gel diffusion barrier has a thickness of 2.0...

What is the net electric force on charge A in FIGURE EX22.17? 1.0 nC -1.0 nC 4.0 nC B 1.0 cm 1.0 cm

Water at 40F is to flow through a 1 1/2 -in. schedule 40 steel pipe. The outside surface of the pipe is to be insulated with a 1-in.-thick layer of 85% magnesia and a 1-in.-thick layer of packed...

In 2014, the European Space Agency placed a satellite in orbit around comet 67P/Churyumov-Gerasimenko and then landed a probe on the surface. The actual orbit was elliptical, but well approximate it...

Indiana Jones needs to ascend a 10-m-high building. There is a large hose filled with pressurized water hanging down from the building top. He builds a square platform and mounts four 4-cm-diameter...

Ozone gas (O 3 , solute A) dissolved in high-purity water is commonly used in wet cleaning processes associated with semiconductor device fabrication. It is desired to produce a liquid water stream...

What is the force F on the 1.0 nC charge in FIGURE EX22.20? Give your answer as a magnitude and a direction. 1.0 nC +, 1.0 cm ,' 1.0 cm 60 60, 1.0 cm -2.0 nC 2.0 nC FIGURE EX22.20

Estimate the molar concentration of 0.50 wt% (0.0050 mass fraction) benzene (C 6 H 6 ) dissolved in liquid ethanol (C 2 H 5 OH) at 20C. The density of liquid ethanol is 789 kg/m 3 at 20C. This...

FIGURE P24.48 shows two very large slabs of metal that are parallel and distance l apart. The top and bottom of each slab has surface area A. The thickness of each slab is so small in comparison to...

Blocks of mass m 1 and m 2 are connected by a massless string that passes over the pulley in Figure P12.65. The pulley turns on frictionless bearings. Mass m 1 slides on a horizontal, frictionless...

A 5.0-cm-diameter metal ball has a surface charge density of 10 C/m 2 . How much work is required to remove one electron from this ball?

Water at 15°C is drained from a large reservoir using two horizontal plastic pipes connected in series. The first pipe is 20 m long and has a 10-cm diameter, while the second pipe is 35 m long...

Consider proportional only control of the level control system in Fig. 11.16. The level transmitter has a span of 10 ft. and a zero of 15 ft. Recall that the standard instrument ranges are 4 to 20 mA...

What is the net electric force on charge B in FIGURE EX22.18? A(+1.0 nC | 2.0 cm -2.0 nC 1.0 cm C+) 2.0 nC FIGURE EX22.18

Three 1.0 nC charges are placed as shown in FIGURE P22.66. Each of these charges creates an electric field E at a point 3.0 cm in front of the middle charge. a. What are the three fields E 1 , E 2 ,...

A refnery processes two crude oils that have the yields shown in the table below. Because of equipment and storage limitations, production of gasoline, kerosene, and fuel oil must be limited as shown...

Consider the drug treatment system shown in the figure below. A hemispherical cluster of unhealthy cells is surrounded by a larger hemisphere of stagnant dead tissue (species B), which is turn...

a. Use the methods of Chapter 25 to find the potential at distance x on the axis of the charged rod shown in FIGURE P26.43. b. Use the result of part a to find the electric field at distance x on the...

A well-mixed open pond contains wastewater that is contaminated with a dilute concentration of dissolved methylene chloride. The pond is rectangular with dimensions of 500 m by 100 m, as shown in the...

A heat engine using 1.0 mol of a monatomic gas follows the cycle shown in FIGURE P21.55. 3750 J of heat energy is transferred to the gas during process 1 2. a. Determine W s , Q, and ÎE th for...

Ethanol is vaporized at 78°C (h fg = 846 kJ/kg) in a double-pipe parallel-flow heat exchanger at a rate of 0.03 kg/s by hot oil (c p = 2200 J/kg·K) that enters at 120°C. If the heat...

What are the strength and direction of the electric field at the position indicated by the dot in FIGURE EX23.1? Specify the direction as an angle above or below horizontal. 3.0 nC + 5.0 cm 5.0 cm...

A small segment of wire in FIGURE Q23.4 contains 10 nC of charge. a. The segment is shrunk to one-third of its original length.What is the ratio f / i , where i and f are the initial and final...

A 2.0 cm 2.0 cm 6.0 cm block floats in water with its long axis vertical. The length of the block above water is 2.0 cm. What is the blocks mass density?

What are the strength and direction of the magnetic field at point P in FIGURE P29.46? 5.0 A 2.0 cm 1.0 cm FIGURE P29.46

An infinite plane of charge with surface charge density 3.2 C/m 2 has a 20-cm-diameter circular hole cut out of it. What is the electric field strength directly over the center of the hole at a...

Consider the biosensor device shown in the figure in the next column. The biosensor is designed to measure the concentration of solute A in the well-mixed liquid phase. At the base of the device is...

The pulley in Fig. P9.84 has radius 0.160 m and moment of inertia 0.560 kg m 2 . The rope does not slip on the pulley rim. Use energy methods to calculate the speed of the 4.00-kg block just before...

After one bee left a flower with a positive charge, that bee flew away and another bee with the same amount of positive charge flew close to the plant. Which diagram in Fig. P21.100 best represents...

A manufacturer makes absorber plates that are 1.2 m à 0.8 m in size for use in solar collectors. The back side of the plate is heavily insulated, while its front surface is coated with black...

To defrost ice accumulated on the outer surface of an automobile windshield, warm air is blown over the inner surface of the windshield. Consider an automobile windshield with thickness of 5 mm and...

What is the electric potential at the point indicated with the dot in FIGURE EX25.30? 2.0 nC -1.0 nC 3.0 cm 14.0 cm +, 2.0 nC FIGURE EX25.30

Consider Figs. 16.3 and 16.4 illustrating cascade control. (a) Suppose you were to apply feedforward control, instead of cascade control, to handle disturbances D 1 and D 2 . Where do you expect...

Water flows at a rate of 20 L/s through a horizontal pipe whose diameter is constant at 3 cm. The pressure drop across a valve in the pipe is measured to be 2 kPa, as shown in Fig P12??55. Determine...

Consider the timed drug release pill shown in the figure below. The pill is ingested into the stomach. The pill is a slab of 0.36 cm per side, which has an array of 16 cylindrical pores in it. Each...

A composite wall is to be constructed of in. of stainless steel (k = 10 Btu/h ft F), 3 in. of cork board (k = 0.025 Btu/h ft F), and in. of plastic (k = 1.5 Btu/h ft F). Determine the thermal...

A rectangular metal loop with 0.050 resistance is placed next to one wire of the RC circuit shown in FIGURE P30.52. The capacitor is charged to 20 V with the polarity shown, then the switch is...