What is the crust of the earth made of

A diver 40 m deep in 10∘C fresh water exhales a 1.0-cm-diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20∘C?

What acceleration does a 9 N force produce in a 3 kg object? Make sure to show your work. (The 4 steps)

As the solar nebula collapsed, it became a disk becausea) the overall rotation of the nebula plus collisions between particles made the particles go in more or less the same direction. b) the initial cloud was disk shaped.

If we compare and contrast electromagnetic waves with sound eaves, but all but one statement is true. That is

Whitch tool could be used to mesure the mass of. a package being mailed

What is the safest place to be amid the coronavirus?

What is the change in internal energy if 60 J of heat are added to a system and the system does 40 J of work on its surroundings? Use AU = Q-W.

A 35-N bucket of water is lifted vertically 3.0 m and then returned to its original position. How much work did gravity do on the bucket during this process?

You then decide to throw another disc to your friend in the tree for fun. If you throw the disc at a speed of 10 m/s and your friend catches it 5.0 m above you, what was the speed of the disc just before your friend catches it

Which is true? An ideal emf device has internal resistance and a real emf device does not. A real emf device sets up a potential difference and an ideal emf device does not.