3 years ago

If energy cannot be created or destroyed, where does it go?

2 answers:

3 0

It transfers and changes into different types of energy, this is why the ground feels hot when something moves fast over it.

siniylev [52]3 years ago

3 0

Answer:

it transfers from one place to another.

Explanation:

let's take our example as money:

Money is neither created nor destroyed but it is transferred.

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student built a simple heat engine that could lift masses. If the heat engine takes in 300 J of heat and loses 50 J to the envir

k0ka [10]

Answer:

So it will lift the mass by h = 17 m

Explanation:

As per energy conservation we know that

$Q_1 = W + Q_2$

here we know that

$Q_1 = 300 J$

$Q_2 = 50 J$

now we have

$W = 300 - 50$

$W = 250 J$

so work done by the engine is 250 J

now we have

$W = mgh$

$250 = 1.5 \times 9.81 \times h$

$h = 17 m$

4 0

3 years ago

Which two processes would most likely cause metamorphic rocks to change into sediments?

vfiekz [6]

Answer:

Weather and erosion

Explanation:

Thats what makes sediment rocks sediment rocks

7 0

3 years ago

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What is escape velocity

Bogdan [553]

The minimum speed needed a non-propelled object to escape from the gravitational influence of a massive body, that is to achieve an infinite distance from it. I think

3 0

4 years ago

Read 2 more answers

If you could help with these two questions that would be literally amazing I hate physics

dimaraw [331]

Answer:

It's the third answer

Explanation:

I had a test similar to this one a while back

4 0

1 year ago

An object with a velocity of

algol [13]

Answer:

v = 1.7 m/s

Explanation:

Given that,

Initial velocity of the object, u = 1 m/s

Acceleration of the object, a = 1 m/s²

We need to find the velocity of the object after moving 1 m. Let v be the velocity. Using third equation of kinematics to find it i.e.

$v^2-u^2=2ad\\\\v^2=2ad+u^2\\\\v^2=2(1)(1)+1^2\\\\v=\sqrt3\\\\v=1.7\ m/s$

So, the final velocity of the object is 1.7 m/s.

4 0

3 years ago