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An airtight box has a removable lid of area 1.34E-2 m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 8.34E+4 Pa. The inside of the box is completely evacuated. What is the magnitude of the force required to pull the lid off the box?
The distance from the center of the oxygen atom to the center of a hydrogen atom is 0.96 A, Find the center-to-center distance between the hydrogen atoms
A drunk driver in a 2300kg car plows into a 2100kg parked car with its brake set. Police measurements show that the two cars skid together a distance of 20m before stopping. If the effective coefficient of friction is 0.68, how fast was the drunk goi..
Two specks of dirt are trapped in a crystal ball, one at the center and other halfway to the surface, what is the refractive index of the ball
cylindrical tube oriented vertically on earths surface closed at the bottom and open at the top height 100 m cross
A metal ball bearing 1.0 cm above the bead feels a 0.035 N downward electric force, What is the charge on the ball bearing
Find the work done by 2.54 moles of an ideal gas if its volume doubles at a constant temperature of 23.6°C. Find the heat absorbed by the gas
A boy uses a slingshot to launch a pebble straight up into the air. The pebble reaches a height of 24.0 m above the launch point 2.3 seconds later, What was the pebble's initial speed
Two point charges q = +10C are a distance 0:12 m apart. Calculate the electrostatic force on each charge
a ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. it rebounds from the floor to reach a height of
A 0.15 kg ball is placed in a shallow wedge with an opening angle of 150.For each contact point between the wedge and ball, find out the force exerted on the ball. Assume the system is frictionless.
Imagine that a stove burner provides thermal energy at a rate of 4800 J/s. What is the minimum time that it would take to melt 1 qt (about 1300 g) of ice in a pan placed on that burner
Kenny throws a basketball which has an initial speed v0. When the ball gets to its minimum speed sometime before striking the ground, What was the initial angle of the ball
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