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The planet Mercury has a mass that is 5.00% of that of Earth, and its gravitational acceleration is gmercury = 3.70 m/s2.From what height would you have to drop the rock on Earth so that the fall-time on both planets is the same?
A 8.00-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. How big is the pulling force
Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.10 106 kg/s. If all the potential energy of this water were converted to electric energy, how much power would be produced by these falls?
what are the angles among the cable supporting the load and the beam and between the cable supporting the beam and the beam?
The radius of a black hole is the distance from the black hole's center at which the escape speed is the speed of light. What is the radius of a black hole with the same mass as that of the Earth
A cart 4.9 m in length moving with a velocity of 4.9 m/sec is approaching a platform which is 9.8 m above the plane of the cart's motion. how many meters before the front of the cart arrives
A spaceship travels at a constant speed from earth to a planet orbiting another star. compute How far away is the planet
A hoodlum throws a stone vertically downward with an initial speed of 12.2 m/s from the roof of a building, 25.0 m above the ground. What is the speed of the stone at impact
Two boys are sliding toward each other on a frictionless, ice-covered parking lot. Jacob, mass 45 kg, is gliding to the right at 7.67 m/s, What is their velocity immediately there after
When water freezes, it expands about 8.73%. What would be the pressure increase inside your automobile engine block if the water in it froze
question1a uniform bar is propped against an extremely slick vertical wall. the force of static friction between upper
A 68-{\rm kg} person rides in a 35-{\rm kg} cart moving at 11{\rm m/s} at the top of a hill that is in the shape of an arc of a circle with a radius of 45{\rm m}. What is the apparent weight of the person as the cart passes over the top of the hill
When Josh begins his discus throwing motion, he spins with an angular velocity of 5 rad/s. Just before he releases the discus, what is Josh's average angular acceleration
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