An object pulled to the right by two forces has an acceleration of 2.5m/s2. The free-body diagram shows the forces acting on the object. What is the weight of the object?

Bohr's model is sometimes called the what model bc it resembles a mini-solor system a. atomic b. nuclear c. universal d. planetary

Light travels at a constant speed of about 300,000 km/s. This speed is referred to as the speed of light. A light year is the distance that light travels in one year. One light year is equal to 9.46 trillion kilometers.

A 45.0-kg person steps on a scale in an elevator. The scale reads 460 n. What is the magnitude of the acceleration of the elevator?

How much force is required to accelerate a 50 kg with a mass at 4 m/s2?

A 30-g car rolls from a hill 12 cm high and is traveling at 154 cm/s as it travels along a 275 cm horizontal track. What is the momentum of the car?

Which measurement below has three significant figures? A. 12,300 lbs B. 12.02 m C. 0.2004 g D. 0.018 km

When you stand by the side of a pool someone swimming underwater appears to be in a different location than she really is the effect is called what

A 905 kg test car travels around a 3.25 km circular track. If the magnitude of the centripetal force is 2140 N, what is the car's speed?

Receiver Questions: 1) Going back to the idea of a plane before take off. Why was the sound of the engine louder when it goes from low to high power goes from low to high power?

How much uninterrupted time should you set aside to do homework?