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alex41 [277]
3 years ago
13

Pick the right statement about normal force: (section 5.7)

Physics
1 answer:
Montano1993 [528]3 years ago
7 0

Answer:

A. Normal force is always perpendicular to the area of contact between an object and support.

Explanation:

Normal force is defined as the contact force. If there is no contact between the surfaces, they cannot applies a force which is normal on each other. For e.g, the surfaces of a cubical box and the cart cannot applies a force of normal on each other because of no contact.

If, when there is a contact between two surfaces they applies a normal force on each other, and this force is  perpendicular to the each other . This normal force is necessary to prevent object to penetrating into other.

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Vika [28.1K]

Answer:

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Explanation:

what they said is correct

4 0
3 years ago
What are conduction, convection and radiation?
kaheart [24]

Those are the three ways that heat can move
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3 0
3 years ago
Which of the following is not an example of convection? Warm air rising from heated pavement The rolling motion of boiling water
Romashka-Z-Leto [24]

Answer: The handle of a frying pan on the stove

Explanation: Convection is the heat transfer done by the movement of a fluid, or the molecules on it. This can happen by the change on density from fluids, when a fluid tempeture rise, it expands, rising his volumen and decreasing his density. When this happens the fluid becomes lighter, so it moves.

The handle of a frying pan gets hotter but no molecular movement is done. It is between the same material there is a energy transfer from the source to the rest of the pan. This is called Conduction.

6 0
3 years ago
Please select the word from the list that best fits the definition I study French so I can talk to my cousin who lives in Paris
salantis [7]

Answer:

There is no list...

Explanation:

Post the list and words so I can help you.

8 0
3 years ago
Read 2 more answers
Two bowling balls each have a mass of 6.8 kg. They are located next to each other with their centers 21.8 cm apart. What gravita
12345 [234]

Answer:

6.49 x 10^-8 N

Explanation:

formula is

F= G * ((m1 * m2)/r^2)

F = 6.67x10^-11 * ((6.8*6.8/.218)

F = 6.49 x 10^-8 Newtons

3 0
3 years ago
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