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Q. A 4.20kg steel ball strikes a wall with a speed of 7 m/s at an angle of 60° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.20 s, what is the average force exerted by the wall on ball?
Q. A rifle is aimed horizontally at a target 58.00 away. The bullet hits the target 2.50 below the aim point. What was the bullet's flight time?
Two identical freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They collide, couple, and roll away together with a combined momentum of.
How much energy is necessary to place three charges, each of 3.0 micro Coulomb's, at the corners of an equilateral triangle of side 2 cm.
A hotel elevator ascends 110 {rm m} with a maximum speed of 4 {rm m/s}. Its acceleration and deceleration both have a magnitude of 1.20 {rm m/s^2}.
What is the electric potential energy of the system. A man strikes a long aluminum rod at one end. Another man, at the other end with his ear close to the rod, hears the sound of blow twice (once through the air and once through the rod), with a 26..
If both the ring and the rod are warmed together, what temperature must they both reach so that the ring barely slips over the rod.
A novice skier, starting from rest, slides down a frictionless 34° incline whose vertical height is 128 m. How fast is she going when she reaches the bottom.
The wave is travelling to the right at 50.0 m/s. What is the amplitude if the highest displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m.
Estimate the current in an L-R circuit for t>T if the EMF is (12/T) t for 0
If the 2 kg mass slides on a horizontal frictionless surface, what is the speed of the mass 4 kg while it has fallen a distance 0.4 m downward from its rest position.
What is the dissimilarity between sprinters and nonathletes
suppose you are outdoors in the Boundary Water Canoe Area of Northern Minnesota. You have in your hand the empty tube from a roll of paper towel. Outline the mathematical steps you would take to help you achieve an accurate estimate of the stars i..
express the magnitude of the applied horizontal force.
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