What are Earth's core and mantle made of? Explain how we know.

Power is expressed in what.?

In the cabin of a plane cruising at 600km/hr, a pillow drops from the overhead bin onto your lap. Why does it not slam into the rear of the compartment? What is it's horizontal speed relative to the ground? Relative to you inside the jetlinder?

The more the weight, the more the gravitational feld strength and the more mass Is this true or false Answer in true or false

What's the net force of a mass of 275kg and acceleration of - 4.50 m/s^2

When Sequoia measured the sound from the tube open at one end and closed at the other, she only observed three, equally-spaced, peaks in the Fourier transform window, and thus recorded three frequencies (150 Hz, 450 Hz, and 750 Hz).

Why are microwaves beneficial to use for transmitting information

A 75 kg runner taking part in a 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 32 meters. if he completes the 200 m dash in 20.

Thinking about the winter we missed out on this year. Calvin and his tiger go sledding down a snowy hill. There is friction between the snow and the sled, and there is air resistance.

what are the three types of solenoids, which one is the most common, and which one is used in pinball machines?

A sound wave has a frequency of 741 hz in air a wavelength of 0.47m what is the temperature of the air as soon as the below city of sound at 0°C is 235 m/s