What form is Radium usually found in nature?

The SI unit for measuring pressure is known as? A. Bernoulli B. Archimedes C. Newton D. Pascal

6. Suzie hammers on a block of wood when she is 85 meters from a large brick wall. Each time she she hits the block, she hears an echo 0.50 s later. With this information, show that the speed of sound is 340 m/s.

What are the first four resonant frequencies of a 10-cm long tube with (a) Both ends open? (b) Both ends closed? (c) One end open and one end closed?

Wave 1 carries more energy than Wave 2. Wave 3 carries more energy than Wave 2. Keeping speed constant, the greatest amount of energy is carried by a wave with-A a low amplitude and a high frequency. B a low amplitude and a low frequency.

A book, that has a mass of 0.5 grams, is pushed across a table with a force of 20 newtons. What is the acceleration of the book? A. 0.025 m/s2 B. 40 m/s C. 10 m/s2 D. 40 m/s2

Do you think Pluto should be considered a planet? Why or why not?

An object starts from rest at time t = 0.00 s and moves in the + x direction with constant acceleration. The object travels 14.0 m from time t = 1.00 s to time t = 2.00 s. What is the acceleration of the object? a) 5.20 m/s^2 b) 10.4 m/s^2 c) 8.

A box is dragged without acceleration in a straight-line path across a level surface by a force of 13 N. What is the frictional force between the box and the surface?

What is a wormhole, and how is it formed?

Most cells cannot harness heat to perform work because