A wool cloth becomes positively charged as it

A) loses electrons

B) gains protons

C) loses protons

D) gains electrons

A plane has a takeoff speed of 89.3m/s and requires 1465m to reach that speed determine the acceleration of the plane and the time required to reach this speed

A copper block with a mass of 300 grams is cooled to 77 K by being immersed in liquid nitrogen. The block is then placed in a Styrofoam cup containing some water that is initially at + 50.0°C.

In an experiment, which variable do you change? A) Dependent B) Stable C) Graphing D) Independent

What two gases are the sun mostly made of

A 4.89 μC test charge is placed 4.10 cm away from a large, flat, uniformly charged nonconducting surface. The force on the charge is 321 N. The charge is then moved 2.00 cm farther away from the surface. What is the force on the test charge now?

If you were to go to space, and took your helmet of the suit off while your out side of the rocket, what would happen?

In Step 5, you will calculate H+/OH - ratios for more extreme pH solutions. Find the concentration of H + ions to OH - ions listed in Table B of your Student Guide for a solution at a pH = 2.

The molecules of a substance are moving rapidly in a container. The molecules do not interact with each other. If the container is opened, the molecules will escape from the container. In what phase of matter are the molecules in the container?

Which prefix represents tenths in the metric system?

How does melting And burning sugar follow the law of conservation of mass