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enyata [817]
4 years ago
7

#53 plz I need help.

Physics
1 answer:
galben [10]4 years ago
6 0
I) 71% covered in water
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The part of the mantle called the ___ is made out of soft rock that bends like plastic
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The core is the answer to your question
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In all collisions, both elastic and inelastic, which quantity must be conserved?
Paraphin [41]

Answer:

Momentum is conserved.

All of the others are not conserved because of heat loss caused by deformation, etc.

4 0
3 years ago
During their physics field trip to the amusement park, Tyler and Maria took a rider on the Whirligig. The Whirligig ride consist
blondinia [14]

Answer:

Speed = 7.04434 m/s

Explanation:

Given that:

The radius of the circle = 6.5 m

The expression for the calculation of circumference is shown below as:

Circumference=2\times \pi \times radius

Thus,

Circumference=2\times \frac{22}{7} \times 6.5\ m=40.8572\ m

Time taken = 5.8 seconds.

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Speed=\frac{Circumference}{Time\ Taken}

So,

Speed=\frac{40.8572}{5.8}\ m/s

<u>Speed = 7.04434 m/s</u>

8 0
4 years ago
Read 2 more answers
See attachment for the question
weqwewe [10]

The magnitude of force acting on the bumper is 3760 N.

<h3>What is Work energy theorem?</h3>

It states that the Work done in moving a body is equal to the change in kinetic energy of the body

Kinetic energy = 1/2 mv²

Given is a car's bumper designed to withstand 4.32 km/h or 1.2 m/s collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance.

The cushion collapses 0.180 m while bringing 940 kg car to rest from a initial speed of 1.2 m/s

Work done = Force x displacement

As the displacement of the bumper and force acted on it is in same direction, so the work done is

W = Fxcos0° = Fx

The body is coming to rest, so, final velocity is zero. Then, change in kinetic energy will be

ΔK.E = K.Ef - K.Ei

ΔK.E = m/2 (v² - u²)

According to work energy theorem, work done is

W = Fx  = m/2 (v² - u²)

Substitute the value and calculate the force,

F  = [940 x (0² - 1.2²)] / 2x0.180

F = 3760 N

Thus, the magnitude of force is 3760 N.

Learn more about work energy theorem.

brainly.com/question/10063455

#SPJ1

4 0
2 years ago
If you add two batteries to a circuit, the resistance will
aksik [14]
<span>If you add two batteries to a circuit, the resistance will stay the same.

Unless you're working with toasters, electric stoves, or high-power
floodlights, the circuit voltage has no effect on the total resistance.</span>
7 0
4 years ago
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