Why are radio waves considered harmless while ultraviolet waves and x-rats considered harmful

Distinguish between kinectic energy and potential energy.

Common static electricity involves charges ranging from nanocoulombs to microcoulombs. (a) How many electrons are needed to form a charge of - 2.00nC (b) How many electrons must be removed from a neutral object to leave a net charge of 0.500µC?

What is the shortest possible time in which a bacterium could travel a distance of 8.4cm across a Petri dish at a constant speed of 3.5 mm/s?

A boulder of mass 2000 kg is at the top of a cliff of height 220 m. Determine how fast the boulder will be moving when it strikes the dirt below.

Extreme tides are extremely rare a normal occurrence caused only by hurricanes not really tides

What does viscosity describe? Question 4 options: A. a fluid's resistance to being heated B. the rate of evaporation of a fluid C. how much energy it takes to warm a fluid D. the density of a fluid E. a fluid's resistance to flowing

What perspective of dream interpretation is being offered? A. Freudian B. activation-synthesis C. Jungian D. motivation Not D

The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25°C. How many grams of chlorophyll, C55H72MgN4O5, a nonvolatile, nonelectrolyte (MW = 893.5 g/mol), must be added to 187.4 grams of diethyl ether to reduce the vapor pressure to 457.

You're driving down the highway late one night at 18 m/s when a deer steps onto the road 35 m in front of you. your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 11 m/s

You can tell when you are in an earthquake s shadow zone. a. True b. False