What are precautions in a simple pendulum experiment

Two identical conducting spheres each having a radius of 0.500 cm are connected by a light, 1.90-m-long conducting wire. A charge of 41.0 μC is placed on one of the conductors. Assume the surface distribution of charge on each sphere is uniform.

A building that is 105.50 ft. feet tall is casting a shadow that is 37.50 ft. feet. If the building next to it, is casting a shadow of 41.00 ft. feet, how tall is that building?

Argon (Ar) is a stable gas with a very high ionization energy. Which statement explains why? A. It has a full outer shell of electrons. B. It has 18 protons in its nucleus. C. It has 22 neutrons in its nucleus. D. It has two shells of electrons.

A cheetah runs at a velocity of 29 m/s [N]. If it runs 8.4s, what is it's displacement?

The mass of an object on earth is 60 g. On the moon, the object will have a mass: less than 60 g, greater than 60 g, or equal to 60 g

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