What is the force of an object with a mass of 65 kg and an an unknown acceleration?

When is acceleration the greatest on a graph

To simulate deafness, put ear plugs or cotton balls into your ears and put your hands over your ears to block out all sound. Describe this experience in terms of how it changed your perceptions of your environment and how it made you feel.

When investigating the heat of combustion, a student found that 10.0 g of water warmed from 10.0°C to 20.0°C above the flame of a fuel being burned. What energy was absorbed by the water? A. 100 J B. 150 J C. 210 J D. 419 J

Give an example of a model used in science that is larger than the real object and an example of a model that is smaller than the real object

If there were no energy lost to friction in a pendulum, then the pendilum bob would

A 5.00*105-kg subway train is brought to a stop from a speed of 0.500 m/s in 0.400 m by a large spring bumper at the end of its track. what is the force constant k of the spring

A moving object always has energy in its?

What is the volume of a box that is 12 cm long, 2 cm wide, and 3 cm high?

Suppose a child drives a bumper car head on into the side rail, which exerts a force of 4000 N on the car for 0.200 s. (a) What impulse is imparted by this force?

If a soundproof door is almost shut but still leaves a small opening, what wave phenomenon is responsible for someone being able to hear sound from the room while standing by the wall to the side of the opening?