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Alisiya [41]
3 years ago
6

Which arrow represents the centripetal acceleration?

Physics
1 answer:
Monica [59]3 years ago
3 0

Answer:

x

Explanation:

because the force on the car by gravity adds speed and acceleration.

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a car travelling at 50km/h from rest covers a distance of 10km in 40minutes. Calculate the acceleration​
Margarita [4]

Answer:

9.67\cdot 10^{-3}m/s^2

Explanation:

We can solve the problem by using the following suvat equation:

v^2-u^2=2as

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the displacement

For the car in this problem:

u = 0 (it starts from rest)

v=50 km/h \cdot \frac{1000}{3600}=13.9 m/s is the final velocity

s = 10 km = 10 000 m is the displacement

Solving for a, we find:

a=\frac{v^2-u^2}{2s}=\frac{13.9^2}{2(10000)}=9.67\cdot 10^{-3}m/s^2

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3 years ago
How much heat energy is produced by 0.5 Wh of electrical energy ?
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1.7 Btu

1 watt = 3.41214 Btu/h

1watt * 1h = 3.41214 Btu/h * h

1 = 3.41214 Btu/ (watt*h)/

0.5 watt * h = 0.5 watt*h * 3.41214 Btu/(watt*h) = 1.706 Btu
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<span>The maximum oxygen uptake is known as the VO max.</span>
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Which of the following is not an example of work being done on an object?
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Answer:

Lifting a bag of groceries

6 0
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If the student hit a drum in his bedroom how would the sound wave behave differently than if he hit it in a swimming pool? Pleas
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The sound wave would behave differently in a swimming pool than in his bedroom because sound waves travel faster in more dense mediums; such as water. The wave will travel faster in water, and slower in air.
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