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AnnZ [28]
3 years ago
7

Which of the following are examples of levers?

Physics
1 answer:
Ivanshal [37]3 years ago
7 0

Answer:

I think its  B C and D

Explanation:

Idk I think this will help :)

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What is the entropy of a closed system in which 28 distinguishable grains of sand are distributed among 1000 distinguishable equ
baherus [9]

Answer:

193.4 J/K

Explanation:

For a closed system, the entropy is given as the natural logarithm of microstates.

The number of particles ( grains of sand ) N = 28

The number of boxes ( compartments ) M = 1000

Entropy is the logarithm of number of microstates

S=ln \psi

But the number of microstates is given by

\psi=M^{N} hence S=ln M^{N}=\ln (1000^{28})= \boxed{193.4 J/K}

4 0
3 years ago
A 65.0-kg woman steps off a 11.0-m diving platform and drops straight down into the water. 1) If she reaches a depth of 4.60 m,
Ganezh [65]

Answer:

2160.26 N.

Explanation:

From the question,

The total energy of the woman = work done by the water.

mg(h+d) = F'×d.......................... Equation 1

m = mass of the the woman, g= acceleration due to gravity, h = height of the platform, d = depth of water reached by the woman, F'= Resistance force exerted on her by the water.

make F' the subject of the equation

F' = mg(h+d)/d............................ Equation 2

Given: m = 65.0 kg, g = 9.8 m/s², h = 11 m, d = 4.6 m.

Substitute into equation 2

F' = 65(9.8)(11+4.6)/4.6

F' = 9937.2/4.6

F' = 2160.26 N.

8 0
3 years ago
"a force sets an object in motion. when the force is multiplied by the time of its application, we call the quantity impulse, an
dsp73
<span>The quantity force multiplied by distance is work.Work is done when a force pushes something and the object moves some distance in the direction it’s being pushed.work = force x distance where distance traveled in the direction the force is pushing counts.The unit for rate of working also called as Power.</span>
4 0
3 years ago
One of the main differences between the intaglio and the relief printing processes is that with intaglio the ink ________ the su
TEA [102]
The answer to this question is "LIES BELOW THE SURFACE" happens or occurs. When one of the main differences between the two which is the Intaglio and the other one is the relief printing processes is that with the Intaglio the ink LIES BELOW the surface of the printing plate.
5 0
4 years ago
A stun gun or TASER is designed to put out a few seconds worth of electric pulses that impress a
iren [92.7K]

Answer:

Resistance = 400000 Ohms

Explanation:

Given the following data;

Voltage = 1200 V

Current = 3 mA = 3/1000 = 0.003 A

To find the resistance;

Voltage = current * resistance

Resistance = 1200/0.003

Resistance = 400000 Ohms

5 0
3 years ago
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