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shepuryov [24]
3 years ago
8

The best base unit for measuring the length of a carpet is a ____

Physics
2 answers:
sammy [17]3 years ago
5 0
The answer will be B) Meter
Vlada [557]3 years ago
4 0

Answer:

B) meter

Explanation:

This is because the meter is the SI unit of measurement of length. it is defined as the distance traveled by light in 1/(3 x 10⁸) sec in vacuum. it is neither a small unit of measurement of length nor a large unit of measurement of length. hence it is the most suitable unit  for measuring the length of the carpet.

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The driver of a car traveling 110 km/h slams on the brakes so that the car undergoes a constant acceleration, skidding to a comp
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Answer: -6.80\ ms^{-2}

Explanation:

We know that the formula for acceleration is given by:

a=\dfrac{v-u}{t} , where v = Final velocity

u= Initial velocity

Given :  The driver of a car traveling 110 km/h slams on the brakes so that the car undergoes a constant acceleration.

i.e. u=   110 km/h =\dfrac{110\times1000}{3600}\approx35.6\ m/s  [∵  1 km= 100 meters and 1 hour = 3600 seconds]

v=  0  m/s ( At brake , final velocity becomes 0)

t=4.5 seconds  

Substitute all the values in the formula , we get

a=\dfrac{0-30.56}{4.5}\approx-6.80\ ms^{-2}

Hence, the average acceleration of the car during braking is -6.80\ ms^{-2}.

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3 years ago
How does the movement of particles of matter change when temperature decreases
Zanzabum
INCREASE in temperature of the material practically increase the energy of the particles. which increases their motion due to increase in energy . thus when the temperature is decreased the energy level decreases which causes the particle's motion to slow down.. the motion of the particle is highly reduced when the temperature is lowered
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