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k0ka [10]
3 years ago
12

Why do living beings and machine need energy?​

Physics
2 answers:
In-s [12.5K]3 years ago
8 0
If it didn’t have energy then we wouldn’t be able to move very much and machines will be slower
jeyben [28]3 years ago
7 0

Answer:

समाकलन कीजिए!

5x

(x+1)(

x

2

−4)

5x(x+1)(x2-4)per Gujari ke design

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When is the magnitude of the acceleration of a mass on a spring at its maximum value?
DiKsa [7]

Answer:

D

Explanation:

Now we know that Force is the rate of change of momentum meaning

F= mv/t

But

mv/t = Ke

v/t = ke/m

a= ke/m

Where a is acceleration

K is constant of proportionality of tension on a spring

e is the extension substended by a string.

From the formula of acceleration we can see that as mass decreases acceleration increases so we can see that m = 1

We would have a maximum value of acceleration.

6 0
4 years ago
For any pure substance, the boiling point and melting point will always remain
zmey [24]
For any pure substance, the boiling point and melting point will always remain sharp or distinct. This is because the substance has uniform properties all throughout. Hope this answers the question. Have a nice day. Feel free to ask more questions.
7 0
4 years ago
A car accelerate uniformly from rest at 5m/s2 . Determine it's speed after 10s​
krek1111 [17]

Answer:

50m/s.

Explanation:

Let's take acceleration as A and speed as S:

A = 5m/s²

S = A × 10s = 5 × 10 = 50m/s

The answer is 50m/s.

6 0
4 years ago
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A song is playing on a radio. Which of the following best
PtichkaEL [24]
One is the best choice for an answer.
6 0
3 years ago
Read 2 more answers
The mass of a football player who weighs 1250N
Readme [11.4K]


Ah hah !  That depends on where he weighs 1250N, because
weight depends not only on mass but also on the local gravity.
So the same mass can have different weights in different places,
and the same weight can indicate different mass in different places.

       Weight = (mass) x (acceleration of gravity) .

Note:  1250N  is almost exactly  281 pounds.

-- If he weighs 1250N on Mars, then his mass is  336.8 kg.

-- If he weighs 1250N on Earth, then his mass is  127.5 kg.

-- If he weighs 1250N on the Moon, then his mass is  770.2 kg.

5 0
4 years ago
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