How many neutrons make up one of these potassium atoms?

19

20

38

58

On a spinning ride at the fair, it is inertia that keeps you moving in a circle. true or false

Set the mass of person one at 10 kg and the mass of person two at 10 kg. The two people may be any distance apart. Note the force between them. This is the initial condition Mass 1 (kg) Mass 2 (kg) Distance (m) Force of Gravity (N)

Objects in free-fall ___. A:do not experience air resistance B: do not experience gravity C: are accelerating faster than 9.8 m/s/s D: are completely weightless

The chemical reaction of oxygen with other substances is called A. erosion. B. oxidation. C. exfoliation. D. acidification.

Which factor varies between the isotopes of an element? A. proton number B. electron number C. neutron number D. electrical charge

Tarzan runs at 6 m/s and grabs a vertical vine (negligible mass) 4.1 m long which is tied to a tree at the top. Tarzan swings up. Determine the maximum height Tarzan will swing up and the angle the vine makes respect to vertical.

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