Which of the following is considered a physical environmental hazard?

A. Fire

B. Lead in water

C. Smoking cigarettes

D. Being attacked in a dark alley

The gravitational force of attraction between Earth and the Sun is 3.52 x 1022 newtons. Calculate the mass of the Sun. [Show all work, including the equation and substitution with units.]

wnat happens to the sound intensity level (expressed in dB) if we doubled the intensity of the voice of a specific sound?

Which formula is used to calculate the mass of an object if the force and acceleration are known? m = Fa m = m = m = F - a

Which two statements are true about a system? A system is a group of objects analyzed as one unit. Energy that moves across system boundaries is conserved. There's only one way to define the boundaries of a system. All systems are made by humans.

A box at rest on a ramp is in equilibrium, as shown. What is the force of static friction acting on the box? Round your answer to the nearest whole number.

Cody's car accelerates from 0m/s to 45 m/s northward in 15 seconds. What is the acceleration of the car?

Which of the following best illustrates chemical potential energy a dog Plane, gasoline gasoline, water moving down hill, a skydiver about to jump out of a plane

What are two ways to increase the acceleration of an object?

On the moon, all free-fall distance functions are of the form s (t) = 0.81t^2 where t is in seconds and s is in meters. An object is dropped from a height of 200 meters above the moon. After 9 sec, consider parts (a) through (d) below.

Why fan rotates in a clockwise direction and why not in a anti clockwise direction