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densk [106]
2 years ago
5

A motorcycle skids to a stop on a road.

Physics
1 answer:
Svetlanka [38]2 years ago
5 0

Answer:

Friction of the road on the motorcycle in the opposite direction

Explanation:

Khanacademy

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Which of the following are correct statements about the way an atom is put
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valenc e shell

Explanation:

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3 years ago
True or False. Centripetal force holds an object towards the center of a circle.
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False’ because it is a force that makes a body follow a curved path
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If a thermometer measured the temperature in an oven as 400oF five days in a row when the temperature was actually 397oF, this m
aleksandrvk [35]

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It can be said to be reliable although it is not valid

Explanation:

This is because Reliability means an indicator of consistency, A measure should produce similar or the same results consistently if it measures the same quantity. So does the thermometer measures over 5days but it is not valid because it deviates from the real value

5 0
3 years ago
A distant large asteroid is detected that might pose a threat to Earth. If it were to continue moving in a straight line at cons
Vlada [557]

Answer:

The minimum speed required is 5.7395km/s.

Explanation:

To escape earth, the kinetic energy of the asteroid must be greater or equal to its gravitational potential energy:

K.E\geq P.E

or

\dfrac{1}{2}mv^2 \geq  G\dfrac{Mm}{R}

where m is the mass of the asteroid, R= 24,000,000\:m is its distance form earth's center, M = 5.9*10^{24}kg is the mass of the earth, and G = 6.7*10^{-11}m^3/kg\: s^2 is the gravitational constant.

Solving for v we get:

v \geq \sqrt{\dfrac{2GM}{R} }

putting in numerical values gives

v \geq \sqrt{\dfrac{2(6.7*10^{-11})(5.9*10^{24})}{(24,000,000)} }

\boxed{v\geq 5739.5m/s}

in kilometers this is

v\geq5.7395m/s.

Hence, the minimum speed required is 5.7395km/s.

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3 years ago
Looking at the bottom standing wave in the picture, how many complete waves are present?
Shtirlitz [24]

Answer:

the last one

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2 years ago
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