Which part of the atom has to stay the same for it to be the same element?

A.) number of neutrons

B.) number of protons

C.) number of electrons

D.) number of protons, neutrons, and electrons

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A microwave oven with a power rating of 1,790 watts is used for 49 minutes. How much electrical energy is used by the microwave

If the torque required to loosen a nut that holds a wheel on a car has a magnitude of 55 n·m, what force must be exerted at the end of a 0.47 m lug wrench to loosen the nut when the angle is 48°?

A physical quantity X is connected from X = ab2/C. Calculate percentage error in X, when percentage error in a, b, c are 4,2 and 3 respectively.

Emma is working in the laboratory to determine the density of a rectangular piece of solid iron. What are two tools Emma should use to determine the density of the iron?

Why does light look colorless and how is made (I know this just Wana see if anyone will get it correct)

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.