When an explanation to a problem is accepted as always true, it is

a. law theory hypothesis fact?

What are you determine when you calculate volume

A thin metal disk is heated altering its size, but not its shape. As the disk is heated its radius increases at a rate of 0.04 mm/sec. How fast is the disk's area changing when the radius is 225 mm

How long have advances in astronomy been occurring? Only for the past few years Only for the past decade Only for the past century For the past few centuries

A block-and-tackle pulley hoist is suspended in a warehouse by ropes of lengths 2 m and 3 m. the hoist weighs 430 n. the ropes, fastened at different heights, make angles of 50° and 38° with the horizontal.

Why is natural gas referred to as a fossil fuel? A. Natural gas was formed from the breakdown of igneous rocks over millions of years. B. Natural gas was formed from decaying layers of plants in swamps millions of years ago.

An object has an acceleration of 24 m/s/s. How long would it take the stationary object to reach a velocity of 6.8 m/s?

What is normal distribution in statistics?

Which of the following water samples would be considered acidic

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.