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3 years ago

What is velocity ratio? It is impossible to get a perfect machine in practical life, why?

Physics

1 answer:

alexgriva [62]3 years ago

6 0

Explanation:

<h3>VELOCITY RATIO :- The ratio of a distance through which any part of a machine moves to that which the driving part moves during the same time.</h3>

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when matter is transformed from a liquid state to the gas state the distance between the particals. and fhe attractive forces be

Nata [24]

Distance increases and force decreases

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3 years ago

A red rubber ball rolls down a hill from rest with an acceleration of 7.8 m/s 2 . How fast is it moving after it has traveled 5

Wittaler [7]

Answer:

8.83m

Explanation:

Given parameters:

Acceleration = 7.8m/s²

Initial velocity = 0m/s

distance covered = 5m

Unknown:

Final velocity = ?

Solution:

The equation to solve this problem with is given as;

V² = U² + 2aS

V is the final velocity

U is the initial velocity

a is the acceleration

S is the distance

Input the parameters and solve;

V² = 0² + 2 x 7.8 x 5 = 78

V = √78 = 8.83m

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3 years ago

Who developed a unit of electric potential and electromotive force

ehidna [41]

Answer:

Alessandro Volta

Explanation:

Alessandro Volta composed a letter to his amigo, Sir Joseph Banks at the Royal Society of London, in March 1800. In it, Volta drew an image of his voltaic heap, an exacting heap of 24 copper and zinc plates, in addition to cardboard circles absorbed salt. Volta at that point associated copper wires to both the top and base to utilize it as power source.
The voltaic heap and wires would at that point, in principle, charge something helpful, similar to a light or a little engine, however since neither existed in 1800, Volta put the two wires on the tip of his tongue. His tongue, wet with salivation, was a decent conductor and finished the circuit. Volta gave himself a decent stun, accordingly demonstrating he had made another sort of battery, or electrochemical vitality source.
While researchers presently don't prescribe putting live wires on your tongue, Volta was respected for his commitments to science and we named the volt (V), or the unit of measure for electric potential, in his respect.

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3 years ago

Indicate whether the statement is true or false. A scientific fact is something that is absolute and unchanging.

sergey [27]

False, science can experience change

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2 years ago

The diagram shows a transistor used in a circuit.

skelet666 [1.2K]

Answer:

a PNP transistor used as an amplifier

Explanation:

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3 years ago

What is velocity ratio? It is impossible to get a perfect machine in practical life, why?​

What is velocity ratio? It is impossible to get a perfect machine in practical life, why?