Which two facts about plastic affect the environment in a negative way? there are many kinds of plastics to choose from. some plastics release toxic chemicals. they’re good insulators. they don’t break down over time.

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

Ascientific blank must be testable and capable of being proven false?

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.