What is the difference between an element and compound

When the tympanic membrane vibrates with the same frequency as the incoming sound waves it is known asamplitude. pitch. hertz. resonance. cycles.

Separating the electron from the proton in a hydrogen atom takes 2.18 ✕ 10-18 j of work. through what electric potential difference does the electron move?

A skater extends her arms horizontally, holding a 5-kg mass in each hand. She is rotating about a vertical axis with an angular velocity of one revolution per second.

Scientists explain that life arose from non-life billions of years ago through the theory of abiogenesis. Could life arise from non-life today?

The universe contains billions of galaxies. The largest galaxies contain a trillion stars. What holds each galaxy together?

What is the upward force of the floor on the toes of one foot?

What is the difference between nuclear energy and light energy?

Two stars, x and y, have the same temperature. star x is ten times more luminous than star y. which star has the larger radius

If the weight of an object of mass "m" is "mg," then the weight of an object of mass "2m" is A. mg/2 B. mg C. 2mg D. 4mg

In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.830). It has a temperature of 64.1 oC.