2kg ball rolling off a 40 meter building

Balanced forces cause stationary objects to remain at rest and moving objects to come to rest. true or false

A child in a boat throws a 4.5kg package out horizontally with a speed of 13 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 24 kg and the mass of the boat is 53 kg.

you need to walk to class 200 meters away and can only walk 2 m/s. how much time will it take you to get to class

A soap bubble usually pops because some part of it becomes too thin due to evaporation or drainage of fluid. The change in thickness also changes the color of light the bubble reflects. Why?

Why is the earth's magnetic field important for us?

Molecular motion is a measure of the movement of the molecules in a substance molecule motion is substantially different between different states of matter for example the molecules in a more than the molecules in a

A radio telescope is used to study radio waves that come from stars and galaxies. What type of wave is a radio wave?

Review the following observations: Substance A changes a solution to green when mixed with Bromothymol blue indicator. Substance B changes a solution of red onion water to green. Substance C changes Turmeric water orange.

A tube with a cap on one end, but open at the other end, has a fundamental frequency of 129.5 Hz. The speed of sound is 343 m/s. (a) If the cap is removed, what is the new fundamental frequency of the tube? (b) How long is the tube?

When Dr. Hewitt immerses an object in water the second time and catches the water that is displaced by the object, how does the weight lost by the object compare to the weight of the water displaced?