What is the mass of an atom that has 2 protons, 3 neutrons, and 2 electrons

A 60-gallon water heater is initially filled with water at 66°F. Determine how much energy, in Btu, needs to be transferred to the water to raise its temperature to 104°F. Given: The water properties at an average water temperature of 85ºF rho = 62.

What properties are those that describe what happens when a substance reacts with another substance?

How much force would you need to cause a 20kg object to accelerate in a straight line to 20m/s2?

A stone is thrown upward at an angle. what happens to the horizontal component of its velocity as it rises? as it falls?

What is the coefficient of static friction if it takes 34n of force to movea box that weighs 67n?

When reading a buret, where is the initial and final volumes taken from? The top (where the zero is) or the bottom?. If the buret is completely full, is my initial volume 0?

A fl oor polisher has a rotating disk that has a 15-cm radius. The disk rotates at a constant angular velocity of 1.4 rev/s and is covered with a soft material that does the polishing.

Suppose the magnitude of the gravitational force between two spherical objects is 2000 n when they are 100 km apart. what is the magnitude of the gravitational force fg between the objects if the distance between them is 150 km?

A 3.00-kg box is suspended from the end of a light vertical rope. A time-dependent force is applied to the upper end of the rope, and the box moves upward with a velocity magnitude that varies in time according to v (t) = (2.00m/s2) t + (0.

Isotope what is the meaning