1) what's the recommend amount of uv protection that sunglasses should provide?

a. 50%

b. 75%

c. 80%

d. 100%2) one way to ensure good sleep hygiene is to change your bedtime frequently. truefalse

A train travels 90 kilometers in 1 hour, and then 82 kilometers in 5 hours. What is it's average speed?

Which operations are not associative? A. multiplication and addition B. multiplication and division C. division and subtraction D. addition and subtraction

Calculate the total force on the Earth due to Venus, Jupiter, and Saturn, assuming all four planets are in a line. The masses are Mv=0.815ME, MJ=318ME, Msat=95.1ME, Msun=1.99x10^30kg, ME=5.

Which waves can travel through both solids and liquids? Which waves can travel only through solids? Which waves can make dramatic ground movements? Which waves can compress and expand the ground like an accordion?

Saturn has a radius of 60,330,000 meters and a mass of 5.7 * 10^26 kilograms. Calculate the strength of its gravitational field.

what is a possible unit for the product VI, where V is the potential difference across a resistor and I is the current through the same resistor?

What is one basic need that both monkey and a tree have in common

Which statement is true about the centripetal force acting on a body moving at a constant speed in a circle? A. It has no centripetal force. B. It has a centripetal force that is directed radially and outward. C.

Which of the following astronomical bodies is the highest in hierarchy earth galaxy solar system star

The force is proportional to what measurement