A variable that is described using both a number and a direction is called

When do sea breezes occur? A.) Daytime B.) Nightime C.) Both Day and Night Time D.) At Thermal Equilibrium

A neutral atom can be negatively charged by 1. transferring an electron to another atom. 2. transferring a neutron to another atom. 3. receiving a neutron from another atom. 4. receiving an electrician from another atom.

What is the basic definition of a black hole? a. any compact mass that emits no light b. a dead star that has faded from view any object from which the escape velocity exceeds c. the speed of light any object made from dark matter d.

When balanced forces act on an object, what type of motion can the object have? A. It can only be motionless. B. It can move only at a constant speed in a straight line. C. It can be motionless or move at a constant speed in a straight line

As a change of state is occurring, the temperature of the system does not change. a. True b. False

Example of an object in motion

A proton and an alpha particle are momentarily at rest at a distance r from each other. They then begin to move apart. Find the speed of the proton by the time the distance between the proton and the alpha particle doubles.

Why is it a good idea to extend your bare hand forward when you are getting ready to catch a fast-moving baseball? a. So you can catch the ball with a stiff arm, increasing the time to slow the ball thus deceasing the force. b.

At room temperature what is the strength of the electric field in a 12-gauge copper wire (diameter 2.05 mm that is needed to cause a 2.75 a current to flow?

A conductor has a net charge of + 24 uC. How many electrons are needed to make this conductor neutral