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Elza [17]
3 years ago
12

a car travels from station A to B at 30kmph during its return trip A it travels 30 km pH for the first half distance and it 70 k

mph for half next half distance find the average speed of the car​
Physics
1 answer:
8_murik_8 [283]3 years ago
3 0

Explanation:

If you cannot visualize it, just assume that the distance from station A to B is 420km. Each half is 210km.

When the car travels from A to B, it takes 420/30 = 14 hours.

When the car travels from B to the halfway point, it takes 210/30 = 7 hours.

When the car travels from the halfway point to A, it takes 210/70 = 3 hours.

Total time taken = 14 + 7 + 3 = 24 hours.

Total distance = 420km * 2 = 840km.

Hence, the average speed of the car is 840/24 = 35km/h.

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Answer: The horizontal location of the plane will BE OVER THE BOMB

Explanation:

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Why does a vibrating simple pendulum not to produce any sound
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3 years ago
what is the force constant, in newtons per meter, needed to produce a period of 0.45 s for a 0.011-kg mass on the spring?
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The force constant is 2.145 N/m.

<h3>What is spring constant?</h3>
  • The spring constant is the force required to stretch or compress a spring divided by the distance traveled by the spring. It is used to determine whether a spring is stable or unstable.
  • K is the proportionality constant, also known as the 'spring constant.' Hooke's law (F = -kx) specifies stiffness and strength via the k variable. The greater the value of k, the greater the force required to stretch an object to a given length.

Using the relation;

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m =  mass of object in kilograms = 0.011kg

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To find k based on the formula,

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k = 2.145 N/m

Therefore the force constant is 2.145 N/m.

To learn more about force refer to :

brainly.com/question/12785175

#SPJ4

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Answer:

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Hope it helps you..

3 0
2 years ago
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The answer & explanation for this question is given in the attachment below.

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