What do they mean when they say atoms and a element are the basic back bone of the universe

What sets sound waves?

When fossils or minerals certain unstable elements are sometimes locked into them. The proportion of these unstable elements gradually decreases over time as they decay into other materials in a predictable way.

The bellow of a territorial bull hippopotamus is measured at 100 dB above the threshold of hearing. What is the sound intensity? Hint: The threshold of human hearing is I0 = 1.00 x 10-12 W/m2.

What is the definition of luminosity

If there were no friction between the girl and the slide on the hill, what would most likely happen to her motion

A 3.7 kg block is pushed along a horizontal floor by a force modifyingabove upper f with right-arrow of magnitude 25 n at a downward angle θ = 40°. the coefficient of kinetic friction between the block and the floor is 0.26.

When one object heats another, does the temperature increase of one object always equal the temperature decrease of the other object? Explain

Add the following displacement vectors: 12 m south and 15 m 55° E of N?

And electric current is produced by which of the following processes? A. Electrical resistance B. Transfer of protons C. Convection currents D. Electromagnetic induction

The basic building block of life is