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Natali5045456 [20]
2 years ago
15

The hypotenuse of a right triangle is 29.0 centimeters. The length of one of its legs is 20.0 centimeters. What is the length of

the other leg?
Physics
2 answers:
rosijanka [135]2 years ago
8 0

Answer:

21.0 centimeters

Explanation:

Kisachek [45]2 years ago
5 0

square root (29 squared - 20 squared)

Pythagoras' theorem

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A person swims to the other end of a 20m long pool and back. What is their displacement?
mafiozo [28]

Answer:

Zero

Explanation:

It is given that,

A person swims to the other end of a 20m long pool and back.

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Displacement = shortest path covered

He reaches at the same position as from where he has started. It means the shortest path covered is equal to 0 i.e. his displacement is zero.

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Kepler discovered that planets move faster when they are closer to the sun. Which scientist discovered the reason they move fast
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A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 27 ∘ above t
ycow [4]

Answer:

Explanation:

Applied force, F = 18 N

Coefficient of static friction, μs = 0.4

Coefficient of kinetic friction, μs = 0.3

θ = 27°

Let N be the normal reaction of the wall acting on the block and m be the mass of block.

Resolve the components of force F.

As the block is in the horizontal equilibrium, so

F Cos 27° = N

N = 18 Cos 27° = 16.04 N

As the block does not slide so it means that the syatic friction force acting on the block balances the downwards forces acting on the block .

The force of static friction is μs x N = 0.4 x 16.04 = 6.42 N   .... (1)

The vertically downward force acting on the block is mg - F Sin 27°

                                                      = mg - 18 Sin 27° = mg - 8.172    ... (2)

Now by equating the forces from equation (1) and (2), we get

mg - 8.172 = 6.42

mg = 14.592

m x 9.8 = 14.592

m = 1.49 kg

Thus, the mass of block is 1.5 kg.  

6 0
3 years ago
Which number is larger value : 5.6*10^23 or 8.9*10^6<br><br> Need Help
oee [108]

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Explanation:

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You push a box with a force of 80 n. if the net force on the box is 50 n, what is the force on the box due to sliding friction?
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The force of the sliding friction is 30 N.

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