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Q1. A person with a mass of 103 kg is standing on a scale that reads weight in newtons inside of an elevator. If the elevator accelerates upward at 3.2 m/s2, what does the scale read?
Q2. Throughout a physics experiment, helium gas is cooled to a temperature of 12.0 at a pressure of 0.130. What are (a) mean free path in the gas, (b) rms speed of the atoms, and (c) the average energy per atom?
Q3. A race car has a mass of 709 kg. It starts from rest and travels 37.0 m in 4.0 s. The car is uniformly accelerated throughout the entire time. What net force is exerted on it?
A 60.0 kg pole vaulter running at 12.0 m/s vaults over the bar. Assume that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the jump?
A 0.230- coffee cup at 19 is filled with 0.240 of brewed coffee at 97. The cup and the coffee come to thermal equilibrium at 79.If no heat is lost to the environment, what is specific heat of the cup material.
What is force necessary on one end of apparatus in order to lift the car? How much work is done lifting the car?
What horizontal force is needed to hold bag in new position
The magnitude of the acceleration due to gravity
How to find out potential energy
Find out h orizontal angle of projectile
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is originally at rest, then moves at a speed of 0.20 m/s all along the conveyor belt. What is the instantaneous power produced by this machine..
A 18.0 kg block is dragged over a rough, horizontal surface by a constant force of 77.6 N acting at an angle of 35? above the horizontal. The block is displaced 10.8 m, and the coefficient of kinetic friction is 0.149.
If, on other hand, she first kicks it to player 2, who then kicks it into the net, the ball undergoes two successive displacements, y and x. What are the magnitude and direction of x and y.
And if the plane could fly without this pilot, how much force would the plane require to maintain the equal acceleration?
A stream of water strikes a stationary turbine blade horizontally. The incident stream has a velocity of +16m/s whilst the exit has a velocity of -16m/s. mass of water per second that strikes the blade is 30kg/s.find the magnitude of average force ex..
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