What will happen to the momentum of the car as sand is loaded onto it?

You throw a ball straight upward. As it leaves your hand, its speed is 15 m/s. (a) How much time does it take for the ball to reach the top of its trajectory? Start from a fundamental principle and show all your work.

Can black holes merge

Based on the speed, the questio the speed, the river, the speed of your boat relative to the water, and the distance across the river, deteroiine the downstream distance of your boat when it reaches the apposite shore of the river.

A hydrogen atom has its electron in the n = 6 level. the radius of the electron's orbit in the bohr model is 1.905 nm.

Anna needs to move a box of paperback books across the room. If she applies a force of newtons to the box, what is the magnitude of the force exerted by the box on Anna?

A rock is thrown from a cliff and hits the ground five seconds later at a distance of 50 m from the cliff how high was a cliff

A 15.0 m long plane is inclined at 30.0 degrees. If the coefficient of friction is 0.426, what force is required to move a 40.0 kg mass from rest at the bottom on the plane to the top of the plane with a final velocity of 8.00 m/s?

In a pig-calling contest, a caller produces a sound with an intensity level of 60 db. how many such callers would be required to reach the pain level of 120 db? 2 incorrect: your answer is incorrect.

Why is the use of scientific names important in biology?

1) what is a calorie?