An automobile air bag

a. increases the contact time in stopping a person.
b. reduces the impact force in a collision.
c. increases the surface area of the impact force.
d. does all of the above.


d

Physics & Space Science

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The diagram illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see a continuous spectrum?

image

a. 1
b. 2
c. 3
d. 2 and 3
e. none of them

Physics & Space Science

The largest of the red stars are the ____________________ stars

Fill in the blank(s) with correct word

Physics & Space Science

When atmospheric pressure increases, what happens to the absolute pressure at the bottom of a pool?

A) It does not change. B) It increases by a lesser amount. C) It increases by the same amount. D) It increases by a greater amount. E) It depends on the depth of the pool.

Physics & Space Science

If a pendulum makes 12 complete swings in 8.0 s, what are its (a) frequency and (b) period?

What will be an ideal response?

Physics & Space Science