How could some chemical changes be reversed?

An object weighs 30 N on Earth. A second object weighs 30 N on the moon. Which has the greater mass? Question 15 options: The one on the moon The one on Earth Not enough information to say They have the same mass.

The index of refraction is based on the ratio of the speed of light in?

A straight trail with a uniform inclination of 16° leads from a lodge at an elevation of 600 feet to a mountain lake at an elevation of 7,000 feet. What is the length of the trail (to the nearest foot) ? O A. 6,658 ft OB. 25,396 ft OC. 7,282 ft OD.

How is kinetic energy of an object determined?

A transverse wave causes its medium to move parallel to the direction the wave travels. A. True B. False

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.

What is the unit measurement for pain relief tablets and is it SI units Or English system?

You hold a metal ring horizontally above a bar magnet standing on its end. You drop the ring and catch it before it reaches the magnet.