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m_a_m_a [10]
3 years ago
6

Differences differences between gravity and acceleration due to gravity​

Physics
1 answer:
Nina [5.8K]3 years ago
4 0

Look at this table. Accleration of gravity means gravitational constant.

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which of the following is a major disadvantage of nuclear power A. high air pollution B. toxic waste materials C. we lack the te
vodomira [7]
The disposition of the toxic waste materials is the greatest problem
in the field of nuclear-generated electric power today.

Nuclear-generated electric power generates NO air pollution, and
we have the mature technology to use it widely.
4 0
4 years ago
For a ship moving against the current, it takes 9 hours to cover a distance of 113.4 miles. how much does it take this ship to r
Digiron [165]
Let x mph be the speed of the ship in still water.
Against the current, the net speed is, (x-1.9) mph.
Time, t= distance, d/ Speed, v => 9= 113.4/(x-1.9) => 9(x-1.9) = 113.4 => x-1.9 = 113.4/9 => x = 12.6+1.9 = 14.5 mph

Moving with the current, the net speed of the ship = 14.5+1.9 =16.4 mph

Time take, t = d/v = 113.4/16.4 = 6.915 hours
3 0
3 years ago
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A farmer uses 3450 J of energy on a wheel and axle to lift a 15 kg bucket of water 20 m to the top of her well. What is the effi
Anika [276]

<span>Efficiency is the measure of how efficient a process is. It is used to assess the ability of a process in avoiding waste energy, materials, money and time in doing a desirable output. It is calculated as;

Efficiency = useful energy ouput / total energy input</span>

<span>Efficiency = 15(9.81)(20) / 3450 = 0.85</span>

8 0
3 years ago
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Please Help! When does the double-slit interference have its first dark spot on either side of the central peak intensity?
Anvisha [2.4K]
A, C, and D are true when a light spot appears, so those are false.

The answer is therefore B.
6 0
3 years ago
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For the electric power transmission system shown in the figure above, what is the ratio ns/np for the step-up transformer? assum
Ann [662]
I am attaching the missing figure

If we assume 100% efficiency, this means that the input power of the transformer must be equal to the output power

We divide output/input

240,000/12,000 = 20

This means that the transformer has a turns ratio of 1:20

<span>ns/np = 20/1 = 20

The voltage is amplified 20 times by the transformer, but this also means that the current decreases by a factor of 20, so the total power remains the same.</span>

7 0
3 years ago
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