3 years ago

When Einstein's theory of gravity (general relativity) gained acceptance, it demonstrated that Newton's theory had been

Physics

1 answer:

VARVARA [1.3K]3 years ago

8 0

Answer:

incomplete

Explanation:

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He is best known for publishing an almanac based on my astronomical calculations. Who is it?

slega [8]

Benjamin Banneker did this in 1792. Hope this helps

5 0

4 years ago

An elevator has the mass of 3 tons of power needed to raise the elevator 50m in 15 s?PLEASE HELP PLEASE IM SCARED

madreJ [45]

Answer:

Time=15,Mass=3,Acceleration due to gravity=10,Height=50,Power=?.

Power=mgh/t.....which is 3×10×50=1500/15=100Watts.

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3 years ago

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What is the value of x in the triangle? a 45-45-90 triangle with leg length x and hypotenuse length 4

mrs_skeptik [129]

Answer:

$x = 2\sqrt 2$

Explanation:

Given

$Hypotenuse = 4$

Required

Find x

Since the triangle is a 45-45-90 triangle, the following relationship exists

$x^2 + x^2 = 4^2$ --- i.e. the other legs are equal

So, we have:

$2x^2 = 16$

Divide both sides by 2

$x^2=8$

Take square roots of both sides

$x = \sqrt 8$

Simplify

$x = 2\sqrt 2$

5 0

3 years ago

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Just wondering, what do you guys think the 5th dimension is? I've always believed it to be light.

zepelin [54]

Answer: In the 5th dimension, they who claim to know, say that there is only one time, including the past and the future.

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3 years ago

Calculate the potential energy of a 1200 kg boulder on a cliff 45 m above the ground.

Softa [21]

Explanation:

Given mass of the object is 1200kg and it's placed at a height of 45m above the ground. As we know that potential energy is ,

$\longrightarrow PE = mgh$

where,

m is the mass of the body .
g is acceleration due to gravity.
h is the height above the ground .

Substituting the respective values ,

$\longrightarrow P.E. = 1200kg * 10m/s^2* 45m$

Multiply ,

$\longrightarrow P.E. = 540000J$

Hence the potential energy is 540000J .

I hope this helps.

4 0

3 years ago