An atom has 14 protons and 15 neutrons, what is its mass number

a rock thrown horizontally at 20m/s from the top of a building 63m high. How far from the base of the building does the rock land?

Increasing radius causes which of the following? A. Acceleration and force to increase B. Acceleration and force to decrease c. Acceleration to stay the same and force to increase D. Acceleration to increase and force to stay the same

Which series shows the pathway a cell uses to create proteins? A. Protein - RNA - DNA B. Protein - DNA - RNA C. RNA - DNA - Protein D. DNA - RNA - Protein E. DNA - Protein - RNA

Block 1, of mass m1 = 3.90 kg, moves along a frictionless air track with speed v1 = 31.0 m/s. It collides with block 2, of mass m2 = 51.0 kg, which was initially at rest. The blocks stick together after the collision.

Calculate the momentum of a 1200 kg car with a velocity of 25 m/s

Laser light of wavelength 470 nm shines on a pair of slits at normal incidence, producing a pattern of maxima on a large screen 92.0 cm away from the slits. The second order maximum is observed to be 31.7 cm away from the central maximum. a.

What does the slope of a line of best fit represent

A bowling ball is pushed with a force of 22.0N and accerlates at 5.5 m/s square. What is the mass of the bowling ball A - 4.0 kg B-0.25 kg C-25 kg D-4.00 kg

How to eat butter. I want to know how you all eat the butter.

What is the transfer of heat through a solid as a result of molecular action called? radiation convection conduction magnetism?