Which statement is true about the gravitational force?

A.

It acts on all objects all of the time.

B.

It only acts on objects that are in contact.

C.

It only acts on objects that are moving apart.

D.

It only acts on objects that are close to each other.

What is the conversion of celcius to kelvin?

What happens to speed when wavelength decreases

What happens when a charged object and a neutral object are put close together?

Explain how a single piece of polarizing film can be used to adjust the intensity of a beam of light ...

Why is thermal energy produced not generally usable to do work? 1Because the thermal energy dissipates too quickly and is not concentrated enough to be used 2Because this energy is lost to the universe 3 Because thermal energy is a form of energy

How are mass and weight different? a. Mass is the space an object takes up and weight is the effect of gravity on mass. b. Mass is the amount of matter and weight is the effect of gravity on mass. c.

What were the discoveries of astronomers like Copernicus and Galileo?

A major obstacle to developing good human relations is that

4.) An apartment building is on fire and a guy is trapped on the fire escape ladder. There is a dumpster that is 6.3m away and is filled full of trash, and he is 7m above it.

Calculate the temperature of and power-per-area radiated from a blackbody if the spectral intensity density peaks at (a) gamma rays, λ = 1.50*10-14 m; (b) x rays, 1.50 nm; (c) red light, 640 nm; (d) broadcast television waves, 1.