The liquid mercury in a thermometer expands as it is heated. this is a ...

change of state.

change of form.

chemical change.

physical change.

What is a purpose of a capacitor?

The ability of a material to transfer heat or electric current is called

What is radioactive decay

I have a hot air balloon that has 18.0 g helium gas inside of it. if the pressure is 2.00 atm and the temperature is 297k, what is the volume of my balloon?

A loop of wire is perpendicular to a magnetic field such that the field is coming straight at you through the loop. The field begins to decrease in magnitude.

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?

If a 1.50 kg mass revolves at the end of a string 0.50 m long, and its tangential speed is 6.0 m/s, calculate the centripetal force.

Balanced forces can change an object's direction. A. True B. False