When a plastic rod is rubbed with a wool cloth, the wool acquires a positive charge. What is the best explanation for this effect?

Which kind of radio waves are used by television stations to carry sound?

The earth exerts a force of 1.00 newtons on an object in free fall. what is the objects mass?

Which of the following statements about proportion is true? A. Designs that are out of proportion have little monetary value. B. Correct proportions are pleasing to the eye. C. Designs that are out of proportion are less likely to sell. D.

A titanium bicycle frame displaces 0.314 l of water and has a mass of 1.41 kg. part what is the density of the titanium in g/cm3

A 147 N iron ball weighs 15 kg. What is the acceleration of the ball due to gravity?

Which statement about ammeters and voltmeters is true? A. Current and voltage are the same throughout a circuit so where you place the ammeter and voltmeter doesn't matter. B.

Teens realize that things may be "shades of gray" after they enter Piaget's social stage. identity crisis stage. menarche stage. formal operational stage.

Technician A says that fractured rods have a unique mating surface and that only the cap that was fractured is the one that will fit that rod. Technician B says that a powdered metal rod is less expensive, lighter, and as strong as a forged rod.

What is the expected wavelength (in cm) of 10.5 ghz microwaves in free space?

There are 5,280 feet in 1 mile and 12 inches in one foot. How many inches are in a mile?