What determines the atomic mass of an element?

A.

the sum of the protons and electrons

B.

the sum of the ions and isotopes

C.

the sum of the protons and the neutrons

D.

the sum of the neutrons and the electrons

will give brainliest! Why is it important to keep all factors except for one constant during an experiment?

A piece of copper is heated to 90°C and then lowered into a beaker of water at 20°C. The copper transfers 3040 J of energy to the water before it is removed. The temperature of the copper after it is removed is 50°C.

when you erase a word with a eraser where does the word go?

Consider the law of gravitational attraction. Two spheres with a mass, M, are attracted to each other by a force, F.

What are the characteristics of K type spectral stars? (site 1)

What causes an air conditioned to turn on

A turntable is spinning on a frictionless axle when a ball of putty is dropped onto it from above. The putty sticks to the turntable when it lands. Is angular momentum conserved for the turntable and putty (the system) during this process?

The speedof a boat in still water is v. The boat is to make a round-trip ina river whose current travels at speed u.

Why are there so few working wave power stations?

Two abiotic factor that effect an ecosystem are;