Why do we have a brain?

If a cannon is fired use a=F/m to explain what happens to the cannon and the cannonball.

A long solenoid that has 1 170 turns uniformly distributed over a length of 0.420 m produces a magnetic field of magnitude 1.00 10-4 T at its center. What current is required in the windings for that to occur?

How can you protect yourself from the Virus?

Which circuit component is usually a device that uses electrical energy to to perform a certain function? A. wire B. power source C. load

If a dam has water 100 m deep behind it, how much energy (in MJ) was generated if 11,200 kg of water exited the dam at 2.4 m/s?

What is the mass number of a potassium atom that has 20 neutrons

If an atom has a mass number of 23, which of the following is always true? The number of protons in the nucleus does not equal the number of neutrons. The atomic number is less than 11. The atom is not an isotope.

What does the law of conservation of energy say

How many elements are in the lanthanide series?

Photon energy is proportional to which of the following. a. speed of light in a vacuum. B frequency of the light emitting the photon. C intensity of the light emmitting the photon. D wavelegnth of light emmitting thr photon.