A charged ballon attracts small bits of paper. Why does this happen?

What is the apparatus used to capture wind power and turn it into electrical energy?

The study of the Earth's magnetic field is known as A. isochronism B. paleomagnetism C. magnetism D. topography

The change of state from a gas to a liquid?

The density of solid aluminum is 2.70. if a 1g piece of aluminum is dropped in a cup of water, it will. (the density of water is 1.00 g/cm3)

The lighted part of the moon appears to change shape when viewed from the Earth because Question 1 options: Of the shadow cast from the Earth on to the surface of the moon the sun goes out at different times of the month Justin Bieber was having a

Which of the following is a vector quantity? A. 83 ounces of liquid B. 55 km/hr in a truck C. 15 seconds of travel D. 10 m/s down

Which of the following best describes the ultraviolet catastrophe of blackbody radiation? A. As energy is added to an object acting as a blackbody radiator, its emissions move to the ultraviolet part of the electromagnetic spectrum. B.

Is an engine-activated booster unit that reduces the effort required to apply the hydraulic brakes

A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what is the mass of the box (in kg) ?

On a very hot summer day, the rooms on the first floor of a house stay cooler than the rooms on the second. Which form of thermal energy flow causes this to occur? A) Conduction B) Convection C) Kinetic D) Radiation