Why are distant objects in the universe moving away from Earth? Because the light they emit is redshifted. Because Earth's gravity pushes them away Because the universe expanding Because of a supernova event

consider a sample of gas in a container on a comfortable spring day. the Celsius temperature suddenly doubles, and you transfer the gas to a container with twice the volume of the first container.

All living and nonliving material is composed of (1) air (3) water (2) elements (4) soil

A bicycle wheel is mounted on a fixed, frictionless axle, with a light string wound around its rim. The wheel has moment of inertia I=kmr2, where m is its mass, r is its radius, and k is a dimensionless constant between zero and one.

a 1.28kg sample of water at 10.0C is in a calorimeter. You drop a piece of steel with a mass of 0.385kg at 215C into it.

A large volume of the solar system's space is occupied by what?

A possible means of space flight is to place a perfectly reflectingaluminized sheet into orbit around the Earth and then use the lightfrom the Sun to push this "solar sail." Suppose a sail of area5.

An electric circuit consists of a variable resistor connected to a source of constant potential difference. If the resistance of the resistor is doubled, then

What would happen if an electron was added to an atom

Is a stick living, non living or Dead?

A ball player catches a ball 3.24 s after throwing it vertically upward. With what speed did he throw it?