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Marta_Voda [28]
3 years ago
13

A centripetal force causes circular motion because it accelerates an object

Physics
2 answers:
Delicious77 [7]3 years ago
6 0

Answer: Toward the center of a circle, which changes the direction of motion but not the speed.

Explanation: I just took the quiz and made a 100%

EleoNora [17]3 years ago
4 0

Correct answer choice is :


A) Toward the center of a circle, which changes the direction of motion but not the speed.


Explanation:


A centripetal force is a force that gives a body support a curved way. Its direction is always orthogonal to the motion of the body and towards the fixed point of the instant center of the curve of the path. The direction of the net energy is in the same direction as the acceleration. So for an object traveling in a circle, there must be an internal force acting upon it in order to create its internal acceleration. This is seldom related to as the centripetal force demand.


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In October 1997, Andy Green broke the sound barrier on land in a jet-powered car. Green's car had accelerated from rest to 763 m
wolverine [178]

Answer: the time interval Green had to reached the top speed is 47.2 secs

Explanation:

Given the data in the question;

first we determine Green's acceleration.

from third equation of motion, v² - u² = 2as

a = v² - u² / 2s

we substitute,

a = ( (341 m/s)² - (0)² ) / 2(8047)

a = (116281 - 0) / 16094

a = 7.23 m/s²

Now we determine the time interval need to reach top or maximum speed,

v = u + at

at = v - u

t = (v - u) / a

so we substitute

t = (341 - 0) / 7.23

t = 341 / 7.23

t = 47.2 secs

Therefore, the time interval Green had to reached the top speed is 47.2 secs

4 0
3 years ago
What is the surface temperature of Sirius B and A, in kelvins?​
Sindrei [870]

Answer:

9,940 K

Image result for What is the surface temperature of Sirius B and A, in kelvins?

The bright component of the binary is a blue-white star 25.4 times as luminous as the Sun. It has a radius 1.71 times that of the Sun and a surface temperature of 9,940 kelvins (K), which is more than 4,000 K higher than that of the Sun

Explanation:

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3 0
3 years ago
Is the amount of force acting on a given area.
lisov135 [29]

Answer:

\huge\boxed{\sf Pressure}

Explanation:

<u>Pressure:</u>

  • The amount of force acting on per unit area is called pressure.

<u>Mathematical form:</u>

  • P = \frac{F}{A}

<u>Unit:</u>

  • The unit of pressure is N/m² or Pascal. Many other units are also used for pressure.

\rule[225]{225}{2}

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20. For each improvement in glider design, engineers follow
AleksandrR [38]
B. Engineers perform lots of trials.
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3 years ago
The wavelength of a waterwave is 4.0 X 10^2 m. The wave approaches land at 25 m/s what is the period of the wave?
Elodia [21]
The right answer is 72
3 0
3 years ago
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