Which item is an example of a lever?

1. scissors

2. a screw hammered in the wall

3. a flagpole

4. the slope of a hill

5. a knife

A 24.0-V battery is connected in series with a resistor and an inductor, with R = 9.40 Ω and L = 6.40 H, respectively. (a) Find the energy stored in the inductor when the current reaches its maximum value.

Describe two energy conversions that take place when you warm a cup of cocoa in a microwave oven.

A member of the volleyball team spikes the ball. During this process, she changes the velocity of the ball from 4.3 m/s to - 25.1 m/s along a certain direction. If the impulse she delivers to the ball is - 7.

Does the thickness or length of a nail affect the electromagnets strength

A 5 N force pushes on the right side of a box. At the same time a 10 N force pushes in the left side of the box what happens to the box?

To which period in the periodic table does chlorine belong?

Bus A and Bus B leave school on a field trip when a stopwatch reads zero. Bus A travels at a constant 50 km/h, and Bus B travels at a constant 75 km/h. How far are the two buses from school when the stopwatch reads 1.5 h?. a ... Bus A is 76.

When observed from Earth, the wavelengths of light emitted by a star are shifted toward the red end of the electromagnetic spectrum. Why does this redshift occur?

Object A has a length of 3 cm, a width of 10 cm, and a height of 2 cm. Object B is dropped into a graduated cylinder. It displaces 60 mL of water. The volume of object A is:

Is the following sentence true or false? Some information about an object or process may be missing from a model.