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1) A 500 kg mass is released at rest from a distance of two Earth radii above the surface of the Earth. Find the speed of the mass when it has fallen to a distance of one radius above the surface of the Earth.
2) If the mass of Jupiter is 1.8 x 10^27 kg and its radius is 7.1 x 10^7 m, then find the escape velocity for an object launched from the surface of Jupiter.
3) A person pushes with a force of 10.0 N on a stick pin to try to push it into a bulletin board. If the tip of the needle is a circle with a radius of 0.12 mm, then what is the average pressure (in Pascals) on the board at the tip of the pin?
4) An object has a volume of 0.25 m^3 and weighs 3000 N. What will be its apparent weight when submerged in water?
A gnat takes off from one end of a pencil and flies around erratically for 18.1 seconds before landing on the other end of the same pencil. find the gnat\'s average speed
A car travels due east with a speed of 32.0 km/h, The traces of the rain on the side windows of the car make an angle of 52.0° with the vertical, Find the velocity of the rain
Assume 3 mol of neon (an ideal monatomic gas) at STP is compressed slowly and isothermally to 0.25 the original volume. The gas is then allowed to expand quickly and adiabatically back to its original volume.
Your spaceship lands on an unknown planet. To determine the characteristics of this planet, you drop a 1.30 kg wrench from 3.50 m above the ground, What is the mass of the planet
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
Heather and Jerry are standing on a bridge 60m above a river. How much time elapses between the first splash and the second splash
Moment of inertia Wheel If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.72rev/s, what is the magnitude of the frictional torque
A bullet of mass 0.0025 kg moving at 581 m/s impacts a large fixed block of wood and travels 5.40 cm before coming to rest.
A reversible engine takes in 555 J per second and exhausts 482 W, How much power does it produce?
A standing wave is set up by reflecting radio waves from a large, flat metal dish. Where are the corresponding maxima in the magnetic field
Illustrate what is the velocity of the second block after the bullet imbeds itself? (b) Find the ratio of the total kinetic energy after the collision to that before the collision.
A small but measurable current of 8.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm. calculate the current density and electron drift speed
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