Is average speed a scalar or vector quantity? why?

A medium with two fixed ends has a length of 1.2 m. What is the wavelength of the third harmonic?

If 34.7 g of O2 reacts with iron to form 79.34 g of iron oxide, how much iron was used in the reaction? A. 19.84 g B. 44.64 g C. 104.1 g D. 114.04 g

Select the correct answer. A company develops a new synthetic product and prepares to sell it to the public. Customers ask questions about how to property dispose of the product which word is related to disposal? A cost performance productivity D.

Which law describes why a charged object attracts another object even though they are not in contact? A. Faraday's law B. Ohm's law C. Interaction law D. Coulomb's law

Which is the best example of a technological trend?

What is the weight of atmosphere on Earth?

The noble gases are the least what of any elements on the periodic table

Why is friction between moving parts of machines undesirable?

What holds down earths atmosphere in its place?

A person catches a ball with a mass of 145 g dropped from a height of 60.0 m above his glove. His hand stops the ball in 0.0100 s. What is the force exerted by his glove on the ball? Assume the ball slows down with constant acceleration.