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Vaselesa [24]
3 years ago
9

A student made the table shown to list some contact and non-contact forces. Examples of Forces Contact Forces Non-Contact Forces

The force exerted by a stretched spring The force applied by Earth and sun on each other The force exerted by a positive charge on a negative charge The force exerted on hair by a balloon rubbed on hair Which statement best explains why the table is incorrect?
Physics
1 answer:
aleksandr82 [10.1K]3 years ago
5 0

Answer:

the second one is incorrect

Explanation:

I am smart and took the test

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Answer:

Option D

Explanation:

As the question mentions losing its carbonation. Option D is the only option that mentions carbon dioxide gas leaving the solution.

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Suppose you have an object tied to a rope and are rotating it over your head in uniform circular motion. If you increase the len
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Answer:

Centripetal Acceleration

In the previous section, we defined circular motion. The simplest case of circular motion is uniform circular motion, where an object travels a circular path at a constant speed. Note that, unlike speed, the linear velocity of an object in circular motion is constantly changing because it is always changing direction. We know from kinematics that acceleration is a change in velocity, either in magnitude or in direction or both. Therefore, an object undergoing uniform circular motion is always accelerating, even though the magnitude of its velocity is constant.

You experience this acceleration yourself every time you ride in a car while it turns a corner. If you hold the steering wheel steady during the turn and move at a constant speed, you are executing uniform circular motion. What you notice is a feeling of sliding (or being flung, depending on the speed) away from the center of the turn. This isn’t an actual force that is acting on you—it only happens because your body wants to continue moving in a straight line (as per Newton’s first law) whereas the car is turning off this straight-line path. Inside the car it appears as if you are forced away from the center of the turn. This fictitious force is known as the centrifugal force. The sharper the curve and the greater your speed, the more noticeable this effect becomes.

Figure shows an object moving in a circular path at constant speed. The direction of the instantaneous tangential velocity is shown at two points along the path. Acceleration is in the direction of the change in velocity; in this case it points roughly toward the center of rotation. (The center of rotation is at the center of the circular path). If we imagine Δs becoming smaller and smaller, then the acceleration would point exactly toward the center of rotation, but this case is hard to draw. We call the acceleration of an object moving in uniform circular motion the centripetal acceleration ac because centripetal means “center seeking.”

Explanation:

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Select ALL that apply. The stages of a human's lifespan include:
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Answer:

The answers are A and C

Explanation:

the order of a humans lifespan is: Infancy, early childhood, adolescence, adulthood, then elderly

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