A diamond with a mass of 45 g hangs motionless from a chain. what is the upward force of the chain on the diamond?

Armatures are wound to provide high voltage, high current, or some specific combination of voltage and current. Which type of winding provides high voltage and low current?

A weightlifter does 450 J of work on a barbell in 3 s. How much power is the weightlifter generating?

1. Explain why Brownian motion provides evidence for the existence of atoms and molecules

A baseball has a mass of 0.145 kilograms. If the acceleration due to gravity is 9.8 m/s2, what is the weight of the baseball in newtons?

If you kick a ball, you apply an impulse. The impulse is equal to a. The momentum of the ball. b. The change in momentum of the ball. c. The maximum force between your foot and the ball. d. The momentum of your foot.

How does the brightness of a bulb tell you about the energy of electrons passing through it?

Why do you think sound travels faster in steel than it does in wood? (Hint: Think about the densities of the two materials, and how the particles might be arranged.)

On which body would a 100kg man have the least gravitational potential energy when lifted to a height of 3 meters

Which of the following factors can negatively affect development? a. Political corruption and instability b. Lack of resources c. Lack of education d. All of the above

A golf ball is hit with an initial velocity of 155 ft/s at an angle of 23 degrees with the horizontal. After 1.4 seconds, how far has the golf ball traveled horizontally and vertically?. a. 199.7 feet horizontally and 75.2 feet vertically. b. 60.