The fundamental force that binds the electrons to the nuclei to form atoms is

A. strong force.
B. weak force.
C. electromagnetic force.
D. gravitational force.


C. electromagnetic force.

Physics & Space Science

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Exhibit 15-1

A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, air is trapped above the dashed line in the bunker.
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Use this exhibit to answer the following question(s).
Refer to . The absolute pressure at point A, in Pa, is

a.
3.92 × 105.

b.
4.90 × 105.

c.
5.39 × 105.

d.
5.88 × 105.

e.
6.89 × 105.

Physics & Space Science

Why is the atmospheric pressure at the surface of Venus so much higher than Earth's?

What will be an ideal response?

Physics & Space Science

A catapult fires an 800-kg rock with an initial velocity of 100 m/s at a 40° angle to the ground. The magnitude of the horizontal impulse the catapult receives from the rock is

a. 5.1 × 10^4 N s. b. 6.1 × 10^4 N s. c. 8.0 × 10^4 N s. d. 5.0 × 10^5 N s. e. 6.0 × 10^5 N s.

Physics & Space Science

Kepler's second law of planetary motion is known as the law of

a. ellipses. b. equal areas. c. harmonic periods. d. gravitation.

Physics & Space Science