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Elis [28]
2 years ago
8

Which is the last stage in the life cycle of an average star? (1 point)

Physics
1 answer:
Shkiper50 [21]2 years ago
4 0

Answer:

The answer is A. White Dwarf

Explanation:

  • <u>average stars like sun end their life as white dwarf surrounded by disappearing planetary nebula. </u>
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Calculate the power of a crane if it lifts a load of 2400N through a height of 10m in 15 seconds.Also express the power in horse
dem82 [27]

Answer:

<h2>2.08 hp</h2>

Explanation:

The power of the crane can be found by using the formula

p =  \frac{f \times d}{t}  \\

f is the Force

d is the distance

t is the time taken

From the question we have

p =  \frac{2400 \times 10}{15}  =  \frac{24000}{15}  \\

We have

power = 1600 W

But 1 W = 0.0013 hp

So 1600 = 2.08 hp

We have the final answer as

<h3>2.08 hp</h3>

Hope this helps you

3 0
3 years ago
Dani has 15.00 grams of water (c = 4.186 joules over grams times degrees Celsius) at 66°C. She adds 40.00 grams of water at 35°C
Serggg [28]

Answer:

43.45°C

Explanation:

4 0
3 years ago
Read 2 more answers
Refraction or the bending of waves takes place when a light wave changes A) color. B) frequency. C) intensity. D) speed.
DENIUS [597]
The answer is D. speed
6 0
4 years ago
Read 2 more answers
10. Prepare summary notes on the topics of:
Troyanec [42]

Answer:

a) simple machines are devices which makes work easier and simple

7 0
3 years ago
A weight lifter lifts a 1.0 x 103 N weight 1.5 m in 2.0 s. The power is?
viktelen [127]

Answer:

750W

Explanation:

Given parameters:

Weight = 1 x 10³N = 1000N

Distance  = 1.5m

Time  = 2s

Unknown:

Power = ?

Solution:

Power is the rate at which work is done

  Work is the force applied on a body to move it through a particular distance

         Work = force x distance

            Power = \frac{work}{time}

Now, work = 1000 x 1.5 = 1500J

So;

     Power  = \frac{1500}{2}   = 750W

5 0
3 years ago
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