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inna [77]
3 years ago
13

M=20kg F=10N d=25mWork done=?​

Physics
1 answer:
fomenos3 years ago
5 0

w=f×d

w=10N×25m

w=250Nm

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Sam travels west for 30 kilometers, then turns south and travels another 45 kilometers. What is Sam's displacement from his orig
Gre4nikov [31]

Answer: C ) 75 kilometers

Explanation: 30 + 45 = 75

7 0
2 years ago
Which kind of energy transformation occurs during skydiving? A) mechanical to gravitational B) gravitational to kinetic C) kinet
Aleks [24]

B) gravitational to kinetic

Explanation:

The skydiver, when he is located at a certain height h above the ground, possesses gravitational potential energy, equal to:

U=mgh

where m is the mass of the skydiver, g is the gravitational acceleration and h is the height above the ground. As he falls, its height h decreases, while his speed v increases, so part of the gravitational potential energy is converted into kinetic energy, which is given by

K=\frac{1}{2}mv^2

so, we see that as v increases, the kinetic energy increases. Therefore the correct answer is

B) gravitational to kinetic

7 0
3 years ago
Read 2 more answers
An elevator starts from rest with a constant upward acceleration and moves 1 m in the first 1.7 s. A passenger in the elevator i
avanturin [10]

Answer: Tension = 53.6N

Explanation:

Given that

Height h = 1 m

Time t = 1.7 s.

Mass m = 5.1 kg 

From the equation of the motion we can get the acceleration of the elevator:

h = X0+ V0t + at2/2;

Th elevator starts from rest with a constant upward acceleration. Initial velocity Vo = 0, also Xo = 0; thus

a = 2h/t2 = 2 × 1/1.7^2

a = 0.69 m/s2.

Then we can find the tension in the cord by using the formula

T = mg + ma

= 5.1 (9.8 + 0.69)

= 5.1 × 10.5

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7 0
3 years ago
If tony uses a force of 1525 N to drive his car a distance of 381 m, how much work is done on his car?
shepuryov [24]

Hello!!

For calculate the work let's applicate the formula:

\boxed{W=Fd}

\textbf{Being:}

\sqrt{} W = Work = ?

\sqrt{} F = Force = 1525 N

\sqrt{} d = Distance = 381 m

⇒ \text{Then let's \textbf{replace it according} we information:}

W = 1525 N * 381 m

⇒ \text{Let's resolve it: }

W = 581025 J

\textbf{Result:}\\\text{The work is \textbf{581025 Joules}}

3 0
3 years ago
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Name two elements that have similar properties. How can you tell using the periodic table?
tangare [24]
Helium and nitrogen because they are both from the noble gas group.
7 0
4 years ago
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