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TEST_DE_Phys_2.3-2.5

Last updated over 2 years ago
23 questions
2.3 Electric Forces
1
The principle that states that the electric force between two electrically charged objects is directly proportional to the charges of the two objects and inversely proportional to the square of the distance between them is known as _______ law.
1

As the distance between two charged particles increases, the force between them ___________.

1

When an electron is near a proton, which of the following is true?

1

Common forces often known as 'contact forces' (such as a person's hand pushing a chair) are actually not caused by contact but rather are primarily the result of _________ acting at a distance.

1

Two metal conducting spheres are fixed in place and have charges of 0.00025 C and 0.00015 C. They are separated by a distance of 0.85 meters. What is the electric force between them?

2.4 Gravity
3
Draggable itemCorresponding Item
Newton's 1st law
An object in motion stays in motion, unless acted on by a force and an object at rest stays at rest unless acted on by a force
Newton's 2nd law
Force is the product of mass and acceleration
Newton's 3rd law
For every action force, there is an equal but opposite reaction force
2
Newton's law of universal gravitation states that the magnitude of the gravitational force __________as the mass of the two objects increases and __________as the distance between the objects increases.
1
Gravitational force is an interaction between any two objects with mass that __________them to one another.
1
Gravitational __________ energy is the energy stored due to position in a gravitational field, commonly due to Earth's gravity.
1

Which of the following is a unit of mass?

1

At the top of Willis tower (110 stories high) in Chicago, you weigh ________.

1

A 9900-kg object feels a gravitational force of 12.0 N due to a 52,000-kg object. What is the distance between the two objects?

1

If your mass on Earth is 100.0 kg, what is your mass on Jupiter, where the force of gravity is approximately 2.5 that of Earth?

1

Seesaws use the concept of center of gravity to work. If your mass is 100 kg and your friend has a mass of 80 kg, where is the center of gravity located?

2.5 Movements in Space
8
Draggable itemCorresponding Item
orbit
the point in the orbit of a planet or other orbiting body where it is farthest from the Sun or the body around which it revolves
solstice
A date of the year when daylight and nighttime each last 12 hours everywhere on Earth and neither hemisphere is tilted toward or away from the sun; occurs twice per year
tide
the circular or elliptical path of an object as it revolves around another object
aphelion
the point in the orbit of a solar system body when it is closest to the Sun
perihelion
any object that orbits another object
solar eclipse
the temporary blockage of sunlight by the moon as it travels between Earth and the Sun
satellite
the twice-a-year occurrence during which the Sun appears at the highest point in the sky as seen from the North or South pole
equinox
the regular fluctuation of sea water driven by the gravitational pull of the Moon and Sun on Earth's oceans and other large bodies of water
1

What event occurs when one celestial object or that object’s shadow obscures the view from Earth?

1

The spin of a body on its axis is called ________.

1

The International Space Station is an example of ________.

1

According to Kepler's third law of planetary motion, ________.

1

Which of the following is the primary cause of tides on Earth?

1

According to Kepler's first law of planetary motion, ________.

1

Which of the following is not a phase of the moon?

1

The following diagram shows Earth at the point in its orbit farthest from the sun.
Based on this diagram, which of these statements is correct?