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(1) A 0.5-ft^3 balloon filled with nitrogen gas is initally at 75 degrees F and 50 psia. It is now heated at constant pressure to 150 degrees F. What is the new volume in ft^3?
(2) A room with dimensions 10 x 10 x 20 meters is filled with air at 20 degrees C, 101 kPa and relative humidity 0.8. What is the mass of water vapor in the room, in units of kg?
he 5.0- block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.55 and the kinetic coefficient is 0.3, illustrate what is the minimum value of needed to move the two blocks?
A large steam pipe is covered with 1.3-cm-thick insulating material of thermal conductivity 0.25 J/(s m °C). How much energy is lost every second
The distance to a particular star, as measured in the earth's frame of reference, is 7.11 light years, How long does the trip take, according to observers on earth
string under a tension of 50.5 N is used to whirl a rock in a horizontal circle of radius 2.55 m at a speed of 20.3 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
A radio antenna broadcasts a 1.0 MHz radio wave with 30.0 kW of power. What is the electric field amplitude at this distance
Find out the force each hand exerts on the shaft when the shaft is rotating in the horizontal plane about its center at 5×10-2 {rm rev/s}.
Another particle, of mass 7.4 10-27 kg, moves along the positive x-axis with a speed of 4.0 106 m/s. (Assume that mass is conserved.) Evaluate the third particle's speed. What is the direction of motion?
What would the bank angle be for a circular racetrack with radius 120 m so that a car can go around the curve safely at a maximum of 21 m/s
Bruce stands on a bank beside a pond, grasps the end of a 10.00-m long rope attached to a nearby tree and swings out to drop into the water. If the rope starts at an angle of 36° with the vertical, what is Bruce's speed at the bottom of swing.
150 g of ice at -10.5 oC is raised to the melting point and then raised to 76.0 oC. How much heat is added to the system
Two physical pendulums ( not simple pendulum) are made from sticks that are suspended from the ceiling at one end. The sticks are uniform and are identical in all respects, except one is made of wood (mass = 0.17 kg )and the other of metal (mass =..
A jet of water squirts out horizontally from a hole near the bottom of the tank, What is the height, h, of the water level in the tank
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