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Q. On a cool morning, when the temperature is 14 degrees C, you measure the pressure in your car tires to be 30 psi. After driving 50 mi on the freeway, temperature of your tires is 52 degrees C. What is the pressure on the guage now?
A rowboat crosses a river with a velocity of 3.51 mi/h at an angle 62.5° north of west relative to water. The river is 0.8 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore.
A child is riding across a rough field on a sled. Together, she and the sled have a mass of 73 kg. The sled is being pulled by her brother at an angle of 16º with a force of 356 Newtons. What is her acceleration if the coefficient of kinetic friction..
Define the frequency components of an AM signal and draw the AM signal for the given modulation index.
cientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 5.0kg projectile from rest to a speed of 4.0 x 103 m/s. The net force accelerating the projectile..
how fast was the car going on the table. find the vertical and horizontal components of the pendulum's displacement.
The heat of vaporization of ethyl alcohol is about 200 cal/g. If 2.8kg of it were allowed to vaporize in the refrigerator, how many grams of ice would be formed from 0 °C water.
A bowling ball weighing 71.2 is attached to the ceiling by a 3.50 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, speed of the bowling ball is measured a..
What is the stopping distance of the car. What is the initial (horizontal) velocity of the ball.
One hundred k mol of a gas containing 94.4 mole% methane, 3.40% ethane, 0.60% propane, and 0.50 percent butane is to be burned with 17% excess air. Calculate the required molar flow rate of the air.
A golf ball is struck with a five iron on level ground. It lands 92.7 away 4.10 later. What were (a) direction and (b) magnitude of the initial velocity.
A scuba diver is 48 m below the surface of a lake, where the temperature is 5°C. He releases an air bubble with a volume of 17cm3. The bubble rises to the surface.
A uniform electric field exists in the region between two oppositely charged parallel plates 1.67cm apart. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the conflicting plate in a time int..
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