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A comet of mass 4.5 E22 kg moving at 10000 m/s collides withthe earth, initially at rest, and stick. The mass of the earth is5.98 E24 kg. Find the final speed of the earth.
A brass wire is to withstand a tensile force of 350N without breaking. What minimum diameter (in mm) must the wire have
Two friends are carrying a crate of mass 200 kg up a flight of stairs. The crate has length 1.25 m and height 0.500 m, What is the magnitude of the upper person's force
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles, What is the force between the two alpha particles when they are 5.60 10-15 m apart
You see the boy next door trying to push a crate down the sidewalk. He can barely keep it moving, and his feet occasionally slip. You start to wonder how heavy the crate is. You call to ask the boy his mass, and he replies " 48.0kg .
The headlights of a pickup truck are 1.33 m apart. What is the greatest distance at which these headlights can be resolved
An underwater diver sees the sun 50 degrees above horizontal. How high is the sun above the horizon to a fisherman in a boat above the driver.
A bird, starting from its nest (we'll call that the origin), flies 24.0 km due southeast. It then changes directions and flies 26.0 km in a direction 60° north of east. Find the magnitude and direction of its resultant displacement.
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 680m to be the other plate.
If the period of a 10-m long pendulum is 18 s on an asteroid, then what is the acceleration due to gravity on the asteroid
A student throws a water balloon vertically down from the top of a building. The balloon leaves the thrower's hand with the speed of 16 m/s. How fast is it traveling after 2.6 seconds.
A transformer has 5.00 E4 turns in its primary coil and 7.00 E3 turns in its secondary coil. find the rms current in the primary coil
A chair of weight 125 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 35.0 N directed at an angle of 42.0 below the horizontal and the chair slides along the floor. Using Newton's laws, compute..
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