What causes an object to rotate

If I have an average speed of 50 km/hr and I travel 150 km, how long did the trip take me?

Which of these quantities needs to have a direction associated with it? Select one: a. force only b. force and acceleration c. mass only d. acceleration only

An Atwood machine is constructed using a hoop with spokes of negligible mass. The 2.5 kg mass of the pulley is concentrated on its rim, which is a distance 20.3 cm from the axle. The mass on the right is 1.33 kg and on the left is 1.78 kg. 3.7 m 2.

A physics student is riding on a train traveling north. Having read about inertia, the student performs an experiment with a golf ball. He reaches over the aisle and drops the ball from rest.

Suppose someone gives you an alloy that is made of both zinc and nickel. In general, how do you think the physical properties of the alloy would be similar to or different from those of the individual metals?

You can tell when you are in an earthquake s shadow zone. a. True b. False

How are the functions of the cytoskeleton and the cell wall similar

A 15.0 volt storage battery is connected to three resistors, 7.75?, 15.5?, and 21.7?, respectively. the resistors are joined in series. what is the current in the circuit?

3. When driving a car, the chemical energy in gasoline is converted to heat (thermal energy) in the engine. Most of this thermal energy is then converted to mechanical energy, which makes the car move. What happens to the rest of the thermal energy?

Does aliens exist in this world