If a glass rod is rubbed with a dry cloth, what kind of charge would it be:

A) positive, due to extra protons

B) negative, due to protons lost

C) positive due to electrons lost

D) negative, due to extra electrons

In order to change the color of light you must change a. Only the frequency of the light b. Only the wavelength of the light c. Either the frequency or the wavelength of the light d. Neither the frequency nor the wavelength of the light

A crate of mass 500kg is raised to a height of 10ft from the floor. What is the GPE (Gravitational Potential Energy) it has acquired with respect to the ground.

What important factor does the ozone layer serve in earth's atmosphere?

A car traveling on a straight road at 10 meters per second accelerates uniformly to a speed of 21 meters per second in 12 seconds. the total distance traveled by the car in this 12 seconds time interval is

Who would be harder to stop: a professional hockey player skating 4 m/s or a fifth grader sharing at 4 m/s and why

If a pressure gauge measure an increase in 3*10^ (5) Pa on an area of 0.7 m^2, calculate the increase in the force applied to the area?

Which of the following is an example of potential rather than kinetic energy? a. water rushing over Niagara Falls b. a molecule of glucose c. a crawling beetle foraging for food d. light flashes emitted by a firefly

If a force of 15 newtons [N] is applied to a surface and the pressure is measured as 4,000 pascals [Pa], what is the area of the surface in units of square milimeters [mm2 ]?

An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centimeter. She comes up with the perfect alloy and saves a sample of it. Which mass and volume measurements correspond to this sample? 7 g and 2.

What must be your car's average speed in order to travel 235km in 3.25 hours?