What factors may contribute to aging?

A. Cells stop dividing after 50 divisions.

B. Cells become more and more damaged.

C. Genes "tell" cells to stop dividing.

D. all of the above

If it takes a force of 2000 N to move a crate at a rate of 11.56 m/s, what is the mass of the object?

The additional product of the nuclear fission reaction shown in the equation is _. (Hint: Pay attention to the coefficient.) * 23ZU + ón->36n+"3Ba + _ A-91Kr 36 B-92Br 35 C-93Kr 36 D-93Rb 37

When a substance goes directly from a solid state to a gas state, as dry ice does, A. the line on the energy-vs.-temperature graph is horizontal. O B. it's called sublimation. I c. it's called deposition. O D. it's called fusion. E.

A 75-n sack is dragged along the floor with a horizontal force of 100 n. the frictional force acting on the sack is 30 n. what is the value of the fg?

Energy which travels through space in the form of waves is known as A.) electrical energy B.) electromagnetic energy C.) nuclear energy D.) thermal energy

If we decrease the amount of force applied to an object, and all other factors remain the same, the amount of work completed will A decrease. B increase. C increase, then decrease. D not change.

Passing an electric current through a certain substance produces oxygen and sulfur. This substance cannot be a (n)

The atomic mass of an element is A. The average mass of all the isotopes of the element B. A measure of the density of that element C. The mass of the most common isotope of that element D.

Why does sound travel faster in water than in air? A. because water is a denser medium than air B. because air is a denser medium than water C. because water has a larger wavelength than air D. because air has a larger wavelength than water

Explain the working principle of a pressure filter