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Fed [463]
2 years ago
11

Calculate the power transfer when a pump moves 50kg of water through a vertical height of 8meters in 5seconds (take g =10meters

per second)​
Physics
1 answer:
Vika [28.1K]2 years ago
4 0

Hi there!

Recall the following relationships:

W = \Delta U = mg\Delta h\\\\P = \frac{W}{t}

W = Work (J)

U = Potential Energy (J)

m = mass (kg)

g = acceleration due to gravity (9.8 m/s²)

h = height (m)

t = time (s)

Begin by calculating the work:

W = 50(10)(8) = 4000 J

Now, divide by the time to solve for power:

P = \frac{4000}{5} = \boxed{800W}

**W is the unit for power (Watts).  Be careful not to get the two confused.

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What is a passing mechanic cues to remember when you are the receiver of a pass in hockey?
VARVARA [1.3K]

Answer:

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1 Center – plays in between the two wings and is usually the best passer on the team

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2 Defensemen – main job is to play defense and help defend the goal

Passing Cues

1. Stick blade faces target

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3. Transfer weight rear to front as you pass

4. Use wrist movement to drive the puck

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1. athletic position

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Explanation:

6 0
3 years ago
Sanitation can be accomplished by all of the means except
Nonamiya [84]

Answer:

Air drying

Explanation:

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Sanitation can be carried out in several ways, except for dry air, as this would damage the quality of sanitation and the environment.

Sanitation is important in treated water, sewage collection and treatment services lead to an improvement in the quality of people's lives, especially in child health, with a reduction in child mortality, improvements in education, in the expansion of tourism, in the valuation of properties, in income of the worker, in the cleaning of rivers and preservation of water resources, etc.

5 0
3 years ago
A train is accelerating at a rate of 2 km/hr/s.  If its initial velocity is 20 km/hr, what is its velocity after 30 seconds?
Aleksandr [31]
"2 km/hr/s" means that in each second, its engines can increase its speed by 2 km/hr.

If it keeps doing that for 30 seconds, its speed has increased by 60 km/hr.

On top of the initial speed of 20 km/hr, that's 80 km/hr at the end of the 30 seconds.

This whole discussion is of <em>speed</em>, not velocity. Surely, in high school physics,
you've learned the difference by now. There's no information in the question that
says anything about the train's <em>direction</em>, and it was wrong to mention velocity in
the question.  This whole thing could have been taking place on a curved section
of track. If that were the case, it would have taken a team of ace engineers, cranking
their Curtas, to describe what was happening to the velocity.  Better to just stick with
speed.
4 0
4 years ago
Which resistor dissipates the most power, the one with the greatest resistance or the one with the least resistance? explain why
Klio2033 [76]
The power dissipated by a resistor is equal to
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5 0
3 years ago
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