Does light have mass?

What is the size of earth?

What is the key difference between phagocytosis and pinocytosis? a. With phagocytosis, the engulfed substances are in particles; with pinocytosis the engulfed substances are in solution. b.

What substance speed up speeds up a chemical reaction

In the physics of trajectories, complimentary angles have the same range: for example, projectiles launched from 30 degrees and 60 degrees with the same initial speed will land at the same horizontal location.

How many seconds will it take for a satellite to travel 450 km at a rate of 120 m/s?

A car is moving with a speed of 22 m/s. The driver then brakes, and the car comes to a halt after 6.5 s. What is the distance covered by the car after the driver brakes, until it comes to a stop? A) 36 m B) 72 m C) 140 m D) 210 m

Which of the following best explains why an explosive charge in a cannon can cause a cannonball to fly out of the cannon with a high velocity? A. because chemical potential energy can convert to gravitational potential energy B.

Distance divided by time what is velocity

The decay constant of a radioactive nuclide is 4.6 x 10^-3 s^-1. What is the half-life of the nuclide? 2.5 min 2.0 min 1.4 min 3.6 min 3.1 min

A furlong is an old british unit of length equal to 0.125 mi, derived from the length of a furrow in an acre of ploughed land. a fortnight is a unit of time corresponding to two weeks, or 14 days and nights.