Which equation would you use to calculate how much work is done in pushing a rock to the edge of the cliff?

Physics

1 answer:

Natalka [10]3 years ago

4 0

Answer:

Explanation:

d because a b c are energy equation not work

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A human being can be electrocuted if a current as small as 51.0 ma passes near the heart. an electrician working with sweaty han

boyakko [2]

The fatal current is 51 mA = 0.051 Ampere.

The resistance is 2,050Ω .

Voltage = (current) x (resistance)

= (0.051 Ampere) x (2,050 Ω) = 104.6 volts .

==================

This is what the arithmetic says IF the information in the question
is correct.

I don't know how true this is, and I certainly don't plan to test it,
but I have read that a current as small as  15 mA  through the
heart can be fatal, not  51 mA .

If 15 mA can do it, and the sweaty electrician's resistance is
really 2,050 Ω, then the fatal voltage could be as little as  31 volts !

The voltage at the wall-outlets in your house is 120 volts in the USA !
THAT's why you don't want to stick paper clips or a screwdriver into
outlets, and why you want to cover unused outlets with plastic plugs
if there are babies crawling around.

6 0

3 years ago

You wish to lift a 12,000 lb stone by a vertical distance of 15 ft. Unfortunately, you can only generate a maximum pushing force

DochEvi [55]

Answer:

5,760,000 lb-ft²/s²

Explanation:

Work done, W = mgy where m = mass of stone = 12,000 lb, g = 32 ft/s² and y = vertical distance = 15 ft.

So, W = mgy = 12,000 lb × 32 ft/s² × 15 ft. = 5,760,000 lb-ft²/s²

6 0

3 years ago

If you were to yell at a canyon wall, you would hear yourself a short time later. This is because sound can be

mojhsa [17]

The answer is answer b refracted

5 0

3 years ago

Read 2 more answers

If the size of the charge value is tripled for both of twopoint charges maintained at a constant separation, the mutual forcebet

ch4aika [34]

Answer:

a) 9.0

Explanation:

The force between two point charges, obeys Coulomb's Law, which can be written as follows:

$F =\frac{k*q1*q2}{(r12)^{2} }$

As it can be seen, if the separation between the charges remains the same, the new value of the force will be directly proportional to the product of the charges.

If both charges are tripled, the mutual force between them will be changed in a factor equal to 3.0*3.0 = 9.0

8 0

3 years ago

Which wave would produce a standing wave when combined with the original one

Elden [556K]

Answer:

When original wave superimpose with its own reflected wave travelling in opposite direction then it will produce standing wave

Explanation:

Let say the equation of original wave is

$y_i = A sin(\omega t + kx)$