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ser-zykov [4K]
4 years ago
9

In order for work to be done, what must be true?

Physics
1 answer:
Amiraneli [1.4K]4 years ago
5 0

Answer:

option c

Explanation:

Work is said to be done when a force moves a body over a distance, in the direction of force applied.

Work done = force x distance (in the direction of the force)

Therefore work = force x displacement

As displacement is distance in a specific or specified direction.

I hope this was helpful, Please mark as brainliest

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kkurt [141]

Answer :The vapor pressure of water is greater at 50°C than it is at 10°C.

Explanation: Vapor pressure is the pressure exerted by the vapors over the surface of the liquid.

Vapor pressure is directly proportional to the temperature as more is the temperature, more liquid can be converted to vapors and more vapors will exert greater vapor pressure.

As 50 ° C > 10 ° C, at 50 ° C, vapor pressure will be more as compared to 10 ° C.

7 0
3 years ago
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Which is greater:a force of 10N or a force of 5 lbs?
dexar [7]
Well of course firstly we  want to turn that 5lbs into a force using this equation:

Weight(N) = mass(kg) × gravity(m/s^2) 

That equation is called the weight force equation. it is very important

The number you convert  for the  pounds to kilograms is 2.2 so to calcuate how many kg are in 5lbs you divide 5 by 2.2 to get 2.27kg

Then we multiply 2.27kg by 9.81m/s^2 to get 22.30N 

So, now we know  that a force of 5lbs is greater than a force of 10N
7 0
3 years ago
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What is a phone message?
malfutka [58]
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8 0
3 years ago
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Suppose a radio signal (light) travels from Earth and through space at a speed of 3 × 108/ (this is the speed of light in vacuum
Umnica [9.8K]

Answer:

18*10^10 meters

Explanation:

V= d/t         10 mins = 600 seconds

3*10^8 = d/600s

(3*10^8)*(6*10^2) = d

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6 0
4 years ago
An unbanked circular highway curve on level ground makes aturn
tino4ka555 [31]

Answer:

Explanation:

Given

Velocity of traffic v=60\ mi/hr\approx 26.82\ m/s

Maximum value of Centripetal force is one-tenth of weight

such that (F_c)_{max}=\frac{mg}{10}

to make a safe turn centripetal force with radius of curvature r is given by

F_c=\frac{mv^2}{r}

(F_c)_{max}=\frac{mg}{10}=F_c=\frac{mv^2}{r}

\frac{mg}{10}=\frac{mv^2}{r}

r=\frac{10v^2}{g}

r=\frac{10\times 26.82^2}{9.8}

r=733.99\approx 734\ m

     

4 0
4 years ago
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