An atom of an element has 38 electrons. What is also true of that atom?

A.

It has an atomic mass of 38.

B.

It has 38 protons.

C.

It has 38 neutrons.

D.

It bonds with 38 elements.

I got B

Two identical balls are at rest and side by side at the top of a hill. You let one ball, A, start rolling down the hill. A little later you start the second ball, B, down the hill by giving it a shove.

An object with a mass of 20 kg has a net force of 80 N acting on it. What is the acceleration of the object?

In a chemical reaction, the total mass of the reactants is 10.0 grams. After the reaction, the total mass of the products must be:

When compared to strong nuclear force, gravitational force is

An ideal parallel-plate capacitor consists of a set of two parallel plates of area Separated by a very small distance 푑. This capacitor is connected to a battery that charges the capacitor such that the energy stored in the capacitor is 푈'.

The gravitational potential has a zero value gravitational field in the same place is? Maximum or null indeterminate

In four-seater countries, temperature drops below 0 ° C during peak winter. Why only the frozen surface of the water instead of the whole river and the lake freezes?

Which type of circuit is more useful and why

how much current is in a circuit that includes a 9-volt battery and a bulb with a resistance of 3 ohms?

Which must be present in order to call study scientific