The pressure in a compressed natural gas line is measured to be 21.6 mmHg. Express this pressure in Pa and psi.

The pressure in a vacuum chamber is -12.6 psig. Express this pressure in inHg.

The performance of a fan is rated at a pressure differential of 12.4 inWC. Express this pressure in psi and Pa.

The pressure of a pressure blower is rated at a pressure differential of 115 inWC. Express this pressure in psi and Pa.

A passive solar water heater is to be installed on the roof of a multi-story building. The heater tank is open to atmospheric pressure and is mounted 16 m above ground level. In the static...

In the eye of a hurricane, pressure can sometimes drop from normal atmospheric pressure all the way down to 11 psia. What would be the height reading, in inches, of a mercury barometer there?

An environmental instrumentation package is to be designed to be lowered into the Mariana Trench to a depth of 11 km into the Pacific Ocean. If the case is to be watertight at that depth in sea...

A scuba diver will descend one and a half atmospheres into a fresh water lake. Calculate the depth of the dive. Note that an atmosphere is a measure sometimes used by divers to indicate a depth in...

A meteorologist reports a high pressure system with barometric pressure of 790 mm of mercury and then later in the year a low pressure system with a pressure of 738 mm of mercury. What is the total...

What is the pressure, in psig, at the bottom of a swimming pool that is 10 ft deep?

An inclined manometer similar to the one shown in Figure 3.14 is used for sensitive pressure measurement. It is inclined at an angle of 25 degrees above the horizontal and uses red gage fluid with a...

Calculate the total force on the bottom of the closed tank shown in Fig. 4.23 if the air pressure is 52 kPa(gage). Air 0,50 m Oil (sg -0.85) 0.75 m Water 18 m 1.2 m

If the length of the tank in Fig. 4.24 is 1.2 m, calculate the total force on the bottom of the tank. 3 m Tank is Air 200 kPa (gage) 1.2 m long Oil 1.5 m (sg =0.80) Water 2.6 m 2.0 m

The wall shown in Fig. 4.28 is 20 ft long. (a) Calculate the total force on the wall due to water pressure and locate the center of pressure; (b) Calculate the moment due to this force at the base of...

Refer to Fig. 4.30. 3.5 ft 12 in- Reservoir for a hydraulic system. Compute force on side AB. 14 in Oil (sg = 0.93) 8 in

For the water tank shown in Fig. 4.43, compute the magnitude and location of the total force on each vertical end wall. 8 ft Water 60 15 ft 10 ft

For the orange-drink tank shown in Fig. 4.32, compute the magnitude and location of the total force on each vertical end wall. The tank is 3.0 m long. 30 Orange drink (sg - 1.10) 3.0 m 4.6 m 2.4-m...

Repeat Problem 4.19 (Fig. 4.31), except that the tank is now sealed at the top with a pressure of 13.8 kPa above the oil. 450-mm diameter 0.45 m 1.5 m Circular view port is centered in inclined side...

Figure 4.46 shows a tank of water with a circular pipe connected to its bottom. A circular gate seals the pipe opening to prohibit flow. To drain the tank, a winch is used to pull the gate open....

The E-field of an electromagnetic wave is described by Write an expression for the B-field. Determine vector B(0, 0). 3 (i + jEo sin (kz ot + /6)

Starting with Eq. (3.32), prove that the energy densities of the electric and magnet fields are equal (u E = u B ) for an electromagnetic wave. (3.32) UB 2o

Prove that the irradiance of a harmonic EM wave in vacuum is given by and then determine the average rate at which energy is transported per unit area by a plane wave having an amplitude of 15.0 V/m....

The average magnitude of the Poynting vector for sunlight arriving at the top of Earths atmosphere (1.5 10 11 m from the Sun) is about 1.4 kW/m 2 . (a) Compute the average radiation pressure exerted...

The time average of some function Æ(t) taken over an interval T is given by where t' is just a dummy variable. If Ï = 2Ï/Ï is the period of a harmonic function, show that vector...

Determine the index of refraction of a medium if it is to reduce the speed of light by 10% as compared to its speed in vacuum.

Figure P.4.8 shows whats called a corner mirror. Determine the direction of the exiting ray with respect to the incident ray. Figure P.4.8

Show analytically that a beam (in a medium of index n 1 ) entering a planar transparent plate (of index n 2 and thickness d ), as in Fig. P.4.38, emerges parallel to its initial direction. Derive an...

Derive an expression for the speed of the evanescent wave in the case of internal reflection. Write it in terms of c, n i , and i .

A buoy is a solid cylinder 0.3 m in diameter and 1.2 m long. It is made of a material with a specific weight of 7.9 kN/m 3 . If it floats upright, how much of its length is above the water?

A hydrometer is a device for indicating the specific gravity of liquids. Figure 5.21 shows the design for a hydrometer in which the bottom part is a hollow cylinder with a 1.00-in diameter, and the...

A brass weight is to be attached to the bottom of the cylinder described in Problems 5.22 and 5.23, so that the cylinder will be completely submerged and neutrally buoyant in water at 95°C. The...

A closed, hollow, empty drum has a diameter of 24.0 in, a length of 48.0 in, and a weight of 70.0 lb. Will it float stably if placed upright in water?

A scuba diver with wet suit, tank, and gear has a mass of 78 kg. The diver and gear displace a total volume of 82.5 L of sea water. The diver would like to add enough lead weights to become neutrally...

Convert 8720 gal/min to m 3 /s.

Convert a volume flow rate of 125 L/min to m 3 /s.

Convert 4500 L/min to m 3 /s.

Convert 15000 L/min to m 3 /s.

Convert 459 gal/min to L/min.

Convert 8720 gal/min to L/min.

Table 6.2 lists the range of typical volume flow rates for centrifugal fire-fighting pumps to be 500 to 2500 gal/min. Express this range in the units of ft 3 /s and m 3 /s. Flow rate (m/h) Type of...

A small pump delivers 0.85 gal/h of liquid fertilizer. Express this flow rate in ft 3 /s.

A small metering pump delivers 19.5 mL/min of water to dilute a waste stream. Express this flow rate in m 3 /s.

Water at 10C is flowing at 0.075 m 3 /s. Calculate the weight flow rate and the mass flow rate.

After the refrigerant from Problem 6.31 flashes into a vapor, its specific weight is 12.50 N/m 3 . If the weight flow rate remains at 28.5 N/h, compute the volume flow rate. In Problem A liquid...

A fan delivers 640 ft 3 /min (CFM) of air. If the density of the air is 1.20 kg/m 3 , compute the mass flow rate in slugs/s and the weight flow rate in lb/h.

A furnace requires 1200 lb/h of air for efficient combustion. If the air has a specific weight of 0.062 lb/ft 3 , compute the required volume flow rate.

If a pump removes 1.65 gal/min of water from a tank, how long will it take to empty the tank if it contains 7425 lb of water?

Calculate the diameter of a pipe that would carry 75.0 ft 3 / s of a liquid at an average velocity of 10.0 ft/s.

From the list of standard hydraulic steel tubing in Appendix G.2, select the smallest size that would carry 2.80 L/min of oil with a maximum velocity of 0.30 m/s.

Calculate the pressure required in the larger section just ahead of the nozzle in Fig. 6.22 to produce a jet velocity of 75 ft/s. The fluid is water at 180°F. 1.0-in diameter Hlow 0.75-in diameter

Use Fig. 6.3 to specify suitable Schedule 40 pipe sizes for carrying the given volume fl ow rate of water in the suction line and in the discharge line of a pumped distribution system. Select the...

Use Fig. 6.3 to specify suitable Schedule 40 pipe sizes for carrying the given volume fl ow rate of water in the suction line and in the discharge line of a pumped distribution system. Select the...

Use Fig. 6.3 to specify suitable Schedule 40 pipe sizes for carrying the given volume fl ow rate of water in the suction line and in the discharge line of a pumped distribution system. Select the...

A car is traveling at 25 m/s when the driver spots a large pothole in the road a distance 30 m ahead. She immediately applies her brakes. If her acceleration is -27 m/s 2 , does she manage to stop...

Basketball on the Moon. If LeBron James can jump 1.5 m high on Earth, how high could he jump on the Moon (assume an indoor court), where g - 1.6 m/s 2 ?

A cable attached to a block of mass 12 kg pulls the block along a horizontal floor at a constant velocity. If the tension in the cable is 5.0 N, what is the coefficient of kinetic friction between...

A car of mass 1200 kg is lowered onto a junk pile at the end of the cable of a large crane. If the car is accelerating downward at 0.20 m/s 2 , what is the tension in the cable?

A crate of mass 55 kg is attached to one end of a string, and the other end of the string runs over a pulley and is held by a person as in Figure 3.22A. If the person pulls with a force of 85 N, what...

A hockey puck slides with an initial speed of 50 m/s on a large frozen lake. If the coefficient of kinetic friction between the puck and the ice is 0.030, what is the speed of the puck after 10 s?

A car is moving with a velocity of 20 m/s when the brakes are applied and the wheels lock (stop spinning). The car then slides to a stop in 40 m. Find the coefficient of kinetic friction between the...

You are given the job of moving a refrigerator of mass 100 kg across a horizontal floor. The coefficient of static friction between the refrigerator and the floor is 0.45. What is the minimum force...

After struggling to move the refrigerator in Problem 41, you finally apply enough force to get it moving. What is the minimum force required to keep it moving with a constant velocity? Assume K -...

A Styrofoam ball of radius 28 cm falls with a terminal speed of 5.0 m/s. What is the mass of the ball?

A hockey puck is sliding down an inclined plane with angle θ = 15° as shown in Figure P4.49. If the puck is moving with a constant speed, what is the coefficient of kinetic friction...

A soccer ball is kicked with an initial speed of 30 m/s at an angle of 25 with respect to the horizontal. Find (a) The maximum height reached by the ball and (b) The speed of the ball when it is at...

A hockey puck is given an initial velocity such that v x = 12 m/s and v y = 18 m/s, where the xy plane is horizontal. (a) What is the initial speed of the puck? (b) What angle does the initial...

While maneuvering at the scene of a fire, a truck accidently backs over a fire hydrant and breaks it. The diameter of the water line to the hydrant is 6 in, but due to internal plumbing, the...

You are to develop a mixing valve for use in a dairy processing facility. The rated output of the valve is to be 10 gal/min of chocolate milk. There will be two separate input lines, one for milk and...

A decorative fountain for a corporate world headquarters is to be designed to shoot a stream of water straight up in the air. If the designers would like the fountain to reach at least 50 ft into the...

You would like to empty the in-ground pool in the back yard but the drain at the bottom of the pool is no longer functional. Given the dimensions in Fig. 6.43, determine the flow rate from the pool...

Repeat Problem 6.100 if the tank is sealed and a pressure of 35 kPa(gage) is above the water in the tank. Repeat Problem Compute the time required to reduce the depth in the tank shown in Fig. 6.14...

Repeat Problem 6.96 if the tank is sealed and a pressure of 20 kPa(gage) is above the water in the tank. Repeat Problem Compute the time required to empty the tank shown in Fig. 6.14 if the original...

Repeat Problem 6.101 if the tank is sealed and a pressure of 2.8 psig is above the water in the tank. Repeat Problem Compute the time required to reduce the depth in the tank shown in Fig. 6.14 by...

Repeat Problem 6.97 if the tank is sealed and a pressure of 5.0 psig is above the water in the tank. Repeat Problem Compute the time required to empty the tank shown in Fig. 6.14 if the original...

Compute the time required to reduce the depth in the tank shown in Fig. 6.14 by 21.0 ft if the original depth is 23.0 ft. The tank diameter is 46.5 ft and the orifice diameter is 8.75 in. dh

Compute the time required to reduce the depth in the tank shown in Fig. 6.14 by 12.5 in if the original depth is 38 in. The tank diameter is 6.25 ft and the orifice diameter is 0.625 in. dh

Compute the time required to reduce the depth in the tank shown in Fig. 6.14 by 1.50 m if the original depth is 2.68 m. The tank diameter is 2.25 m and the orifice diameter is 50 mm. dh

Compute the time required to empty the tank shown in Fig. 6.14 if the original depth is 18.5 in. The tank diameter is 22.0 in and the orifice diameter is 0.50 in. dh

Compute the time required to empty the tank shown in Fig. 6.14 if the original depth is 15 ft. The tank diameter is 12 ft and the orifice diameter is 6 in. dh

Compute the time required to empty the tank shown in Fig. 6.14 if the original depth is 55 mm. The tank diameter is 300 mm and the orifice diameter is 20 mm. dh

Derive Torricelli's theorem for the velocity of flow from a tank through an orifice opening into the atmosphere under a given depth of fluid.

Draw a plot of eleveation head, pressure head, velocity head, and total head for the fabricated reducer shown in Fig. 6.28 and analyzed in Problem 6.73. Problem 6.73 For the special fabricated...

Draw a plot of elevation head, pressure head, velocity head, and total head for the siphon system shown in Fig. 6. 27 and analyzed in Problem 6.72. Problem 6.72 For siphon shown in Fig. 6.27,...

A liquid refrigerant (sg = 1.08) is flowing at a weight flow rate of 28.5 N/h. Calculate the volume flow rate and the mass flow rate.

Compute the time required to empty the tank shown in Fig. 6.14 if the original depth is 2.68 m. The tank diameter is 3.00 m and the orifice diameter is 150 mm. dh

Table 6.2 lists the range of typical volume flow rates for pumps in industrial oil hydraulic systems to be 3 to 30 gal/min. Express this range in the units of ft 3 /s and m 3 /s. Flow rate (m/h) Type...

A long DN 150 Schedule 40 steel pipe discharges 0.085 m 3 /s of water from a reservoir into the atmosphere as shown in Fig. 7.13. Calculate the energy loss in the pipe.

Water at 40°F is flowing downward through the fabricated reducer shown in Fig. 7.11. At point A the velocity is 10 ft/s and the pressure is 60 psig. The energy loss between points A and B is 25...

Benzene (sg = 0.86) at 60C is flowing at 25 L/min in a DN 25 Schedule 80 steel pipe. Is the flow laminar or turbulent?

An engine crankcase contains SAE 10 motor oil (sg = 0.88). The oil is distributed to other parts of the engine by an oil pump through an 1/8-in steel tube with a wall thickness of 0.032 in. The ease...

At approximately what volume flow rate will propyl alcohol at 77F become turbulent when flowing in a 3-in Type K copper tube?

A system is being designed to carry 500 gal/min of ethylene glycol at 77F at a maximum velocity of 10.0 ft/s. Specify the smallest standard Schedule 40 steel pipe to meet this condition. Then, for...

The range of Reynolds numbers between 2000 and 4000 is described as the critical region because it is not possible to predict whether the flow is laminar or turbulent. One should avoid operation of...

Fuel oil (sg = 0.94) is being delivered to a furnace at a rate of 60 gal/min through a 1 -in Schedule 40 steel pipe. Compute the pressure difference between two points 40.0 ft apart if the pipe is...

If the three bulbs of Prob. 2.59 are connected in parallel to the 120-V source, calculate the current through each bulb. Prob 2.59 An enterprising young man travels to Europe carrying three light...

For the network in Fig. 2.89 , find the current, voltage, and power associated with the 20-kΩ resistor. 5 mA 10 k2 0.01V. V. 5 k2 20 k2

From the circuit in Fig. 2.83 , find I, the power dissipated by the resistor, and the power supplied by each source. 10 V +. 12 V +. -8 V (+1)

In the circuit of Fig. 2.75 , calculate V 1 and V 2 . V2 5 V V,

(a) Obtain the voltage V o in the circuit of Fig. 2.127(a) . (b) Determine the voltage Vʹ o measured when a voltmeter with 6-kΩ internal resistance is connected as shown in...

The circuit in Fig. 2.134 is to control the speed of a motor such that the motor draws currents 5 A, 3 A, and 1 A when the switch is at high, medium, and low positions, respectively. The motor can be...