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Scorpion4ik [409]
3 years ago
11

SOME ONE PLZ HELP WILL GIVE THE BRAINIEST

Physics
1 answer:
Keith_Richards [23]3 years ago
4 0

Answer:

I. 90%

II. 60 MW

Explanation:

From the question given above, the following data were obtained:

Power input = 600 MW

Power output = 540 MW

I. Determination of the efficiency.

Power input = 600 MW

Power output = 540 MW

Efficiency =?

Efficiency = output / input × 100

Efficiency = 540 / 600 × 100

Efficiency = 90%

II. Determination of the power wasted by the pump.

Power input = 600 MW

Power output = 540 MW

Power wasted =?

Power wasted = Power input – Power output

Power wasted = 600 – 540

Power wasted = 60 MW

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A wheel is used to turn a valve stem on a water valve. How much is the mechanical advantage when an effort of 80 lbs. is applied
Ann [662]

Answer:

4

Explanation:

From the question given above, the following data were obtained:

Effort (E) = 80 lbs

Load (L) = 320 lbs

Mechanical advantage (MA) =?

Mechanical advantage is simply defined as the ratio of load to effort. Mathematically, it is expressed as:

Mechanical advantage = Load / Effort

MA = L / E

With the above formula, we can obtain the mechanical advantage as illustrated below:

Effort (E) = 80 lbs

Load (L) = 320 lbs

Mechanical advantage (MA) =?

MA = L / E

MA = 320 / 80

MA = 4

Thus, the mechanical advantage is 4

3 0
3 years ago
An object of mass 25 kg acted upon by a net force of 10 N will experience an acceleration of?
Zolol [24]

Answer:

0.4 m/s2

Explanation:

mass: 25kg

net force: 10 N

acceleration: ?

net force ÷ by mass= acceleration

10 N ÷ 25 Kg = 0.4 m/s2

6 0
3 years ago
What is the difference between an object’s speed and its acceleration? NO LINKS
Arisa [49]

Answer: Hello! An objects speed is constant and has the units meters per second (m/s); thus, it does not change overtime. Acceleration is a rate of change where the speed does either increase or decrease overtime from its inital value; its units are meters per second second (m/s/s). I hope that helps!

5 0
3 years ago
Please!! List three things that can affect solubility.
Dennis_Churaev [7]
Nature of the solute and solvent, Temperature, and Pressure all affect solubility.
7 0
4 years ago
A rock is launched vertically upward by a slingshot. The elastic band of the slingshot accelerates the rock from rest to 40 m/s
eimsori [14]

Answer:

0.016 s

Explanation:

Initial velocity, u = 0

use the third equation of motion to find the acceleration of the rock.

2as=v^2-u^2\\a = \frac{40^2-0}{2\times0.1} =8000 m/s^2

Net displacement in the vertical direction would be zero. y = 0

Use second equation:

s=ut+\frac{1}{2}at^2\\0=0+\frac{1}{2}(8000)t^2\\t= 0.016 s

Thus, the rock will return to its initial release point in 0.016 s.

5 0
3 years ago
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