How does the ozone layer affect life on Earth?

a. causes respiratory illness

b. increases photosynthesis in plants

c. causes damage to living tissue

d. filters out harmful ultraviolet radiation

Which is a compound machine?

4. A helicopter is flying at a height of 1.5km. If it has 50MJ of G. P. E., what is the mass of the helicopter?

How does a doppler radar work?

A damped harmonic oscillator loses 6.0% of its mechanical energy per cycle. a. by what percentage does its frequency (equation 14-20) differ from its natural frequency? b.

Who discovered the law of universal gravitation? a. joule b. tesla c. newton d. percival

Two identical space probes are orbiting Jupiter. Scientists determine that one of the space probes has a larger gravitational force acting on it than the other. which of the following is the most likely reason for the difference? A.

The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 95.2 m.

What is the transfer of energy by collisions between the atoms in the material

An object is dropped from a platform 400 ft high. ignoring wind resistance, what will its speed be when it reaches the ground?

What factors determine whether a collision between two reactant molecules will result in a reaction?