3 years ago

The speed that light travels :

Physics

2 answers:

Monica [59]3 years ago

6 0

The answer has to be c.changes when going through different mediums

OLga [1]3 years ago

4 0

I think it might be C.

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An element's atomic number is 58. How many protons would an atom of this element have?

agasfer [191]

58 the number of protons are the same as your atomic number

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3 years ago

Find the steady-state temperature distribution for the semi-infinite plate problem

jeka94

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Savage is the answer

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3 years ago

A crane lifts a load of 15000N to a height 40m in 50 seconds. Calculate the power of the crane

Nataly [62]

Answer:

P = 12000 W

Explanation:

General data:

F = 15000 N
d = 40 m
t = 50 s
P = ?

Work is force times unit of distance. So in order to calculate the power we must first calculate the work.

Formula:

$\boxed{\bold{W=\frac{F}{d}}}$

Replace and solve

$\boxed{\bold{W=\frac{15000\ N}{40\ m}}}$

$\boxed{\bold{W=600000\ J}}$

once the work is found, we proceed to find the power according to the formula:

$\boxed{\bold{P=\frac{W}{t}}}$

$\boxed{\bold{P=\frac{600000\ J}{50\ s}}}$

$\boxed{\boxed{\bold{P=12000\ W}}}$

The power of the crane is 12000 Watts.

Greetings.

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3 years ago

Someone please help me will give BRAILIEST!!!!!

Alex777 [14]

Uranium is the right answer. Scientists use 5 percent of the uranium after the bomb is refused to create stronger and better nuclear bombs.

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