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Ede4ka [16]
3 years ago
10

Why is it important for scientists to find sources other than fossil fuels for energy production?

Physics
1 answer:
Kitty [74]3 years ago
5 0
I gotta say b on this one
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A force of 350N is applied to a body. If the work done is 40kJ, what is the distance through which the body moved?
Studentka2010 [4]

The distance covered by the body is 114.3 m

Explanation:

The work done by a force exerted on an object is given by

W=Fd cos \theta

where

F is the magnitude of the force

d is the displacement of the object

\theta is the angle between the direction of the force and of the displacement

For the object in this problem, we have

F = 350 N is the force applied

W=40 kJ = 40,000 J is the work done

\theta=0^{\circ} if we assume that the force is applied parallel to the motion of the object

Solving for d, we find the distance covered by the object:

d=\frac{W}{F cos \theta}=\frac{40,000}{(350)(cos 0)}=114.3 m

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

7 0
3 years ago
A thermally insulated vessel containing a gas whose molar mass is equal to M and the ratio of specific heats cP /cV = γ moves wi
Vika [28.1K]

Answer:

∆T = Mv^2Y/2Cp

Explanation:

Formula for Kinetic energy of the vessel = 1/2mv^2

Increase in internal energy Δu = nCVΔT

where n is the number of moles of the gas in vessel.

When the vessel is to stop suddenly, its kinetic energy will be used to increase the temperature of the gas

We say

1/2mv^2 = ∆u

1/2mv^2 = nCv∆T

Since n = m/M

1/2mv^2 = mCv∆T/M

Making ∆T subject of the formula we have

∆T = Mv^2/2Cv

Multiple the RHS by Cp/Cp

∆T = Mv^2/2Cv *Cp/Cp

Since Y = Cp/CV

∆T = Mv^2Y/2Cp k

Since CV = R/Y - 1

We could also have

∆T = Mv^2(Y - 1)/2R k

6 0
4 years ago
Use pascal and pressure in the same sentence
kozerog [31]
The unit of pressure is the Pascal (Pa), equivalent to \frac{\text{kg}}{\text{ms}^{2}}.
8 0
3 years ago
Four rivers have the same volume of water flow over time but fall from the different heights to power hydroelectric dams. which
sveticcg [70]

Answer:

I thibknits 175

Explanation: It's the furthest

3 0
1 year ago
In a ________ reaction, a complex substance breaks down into simpler substances.
kifflom [539]
In a <span>decomposition </span><span>reaction, a complex substance breaks down into simpler substances.
</span>
8 0
4 years ago
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