3 years ago

Why steel is more elastic than rubble

1 answer:

3 0

Steel is more elastic than rubber because steel comes back to its original shape faster than rubber when the deforming forces are removed, hope it helps :)

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Work occurs when

andrew-mc [135]

The answer is the FIRST OPTION
Work occurs when a force is applied to an object and the object moves in the direction of the force applied

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3 years ago

According to diagonal rule, the orbital with lowest energy in the given following is ________.

Kaylis [27]

The orbital with the lowest energy is 3s.

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3 years ago

A 1000kg car is rolling slowly across a level surface at 1 m/s heading twoards a group o fsmall innocent children. The doors are

Degger [83]

Answer:

The force required to push to stop the car is 288.67 N

Explanation:

Given that

Mass of the car, m = 1000 kg

Initial speed of the car, u = 1 m/s

The car and push on the hood at an angle of 30° below horizontal, $\theta=30^{\circ}$

Distance, d = 2 m

Let F is the force must you push to stop the car.

According work energy theorem theorem, the work done is equal to the change in kinetic energy as :

$W=\dfrac{1}{2}m(v^2-u^2)F\times d=\dfrac{1}{2}m(v^2-u^2)$

$v = 0$

$Fd\ cos\theta=\dfrac{1}{2}m(u^2) F=\dfrac{\dfrac{1}{2}m(u^2)}{d\ cos\theta}F=\dfrac{\dfrac{1}{2}\times 1000\times (1)^2}{2\ cos(30)}F = -288.67 N$

The force required to push to stop the car is 288.67 N

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3 years ago

What is occurring when two waves traveling along the same medium meet and cancel each other out?

timofeeve [1]

Answer:

Destructive interference

Explanation:

Destructive interference occurs when waves come together in such a way that they completely cancel each other out. When two waves interfere destructively, they must have the same amplitude in opposite directions.

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3 years ago

Read 2 more answers

I need help with this someone help me?

Brilliant_brown [7]

Graph A so answer B also why isn’t answer a with graph A and B with graph B etc like that’s just confusing lol

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3 years ago