All categories

3 years ago

The efficiency of a machine can be increased by decreasing distance. decreasing force. reducing friction. reducing work.

Chemistry

2 answers:

crimeas [40]3 years ago

5 0

Answer:

Reducing friction

Explanation:

The efficiency of a machine is a how the input energy is converted in output work

Then in the middle you have things consuming the input energy and not going to the output work, the best you can do is reducre those things consuming, for a machine it can be friction, heat, vibration or loose parts.

For that reason Reducing friction is the answer

xeze [42]3 years ago

5 0

Answer: Reducing friction

Explanation:

Friction refers to the resistance that a surface encounters while moving on the surface of another. Machines often posses moving parts such as rollers. Those parts move on other surfaces generating friction. Friction in machine parts leads to useless work and reduces the amount of input work used by the machine to do useful work. The efficiency of a machine has to do with its ability to convert input work into output work. This efficiency is greatly reduced by friction in the moving parts of the machine. Hence friction decreases the efficiency (work done by a machine)

You might be interested in

Which of the following statements is true about Planck’s Law?

zimovet [89]

What are the answer choices?

5 0

3 years ago

How do sound waves travel? PLEASE HELP IF YOU WANT BRAINLEIST AND ME TO LIKE URE COMMENT!!

irina1246 [14]

The answer is A. The vibration caused by the waves through the air eventually weaken, which is why sound diminishes easily over distance.

8 0

2 years ago

Cuantos gramos necesito para preparar una solución de 500 ml al 35% de NaCl

Iteru [2.4K]

A patient who is prescribed a dose inhaler will find that it must be filled with a) medicine in powder form only. Works with lower (not upper) respiratory diseases only. Full of medicine used to give a fixed amount of medicine per oral inhalation. d) Medication in the form of a spray only.

6 0

3 years ago

Answer number 3 plzz

SCORPION-xisa [38]

Answer:

energy

Explanation:

it is required energy to remove an electron from an atom

7 0

3 years ago

Consider the change given below. At constant pressure, is work done by the system on the surroundings? By the surroundings on th

alexira [117]

Answer : At constant pressure work is done by the system on the surroundings.

Explanation :

Work done : Any quantity that flows across the boundary of a system during a change in its state and it completely convertible into the lifting of a weight in the surroundings.

Formula for work done is:

$w=-p_{ext}dV$

Sign convention :

When volume expand then system work that means work done by the system.

w = (-ve)

When volume compress then surrounding work that means work done on the system.

w = (+ve)

The given reaction is:

$Hg(l)\rightarrow Hg(g)$

This is a evaporation process in which phase changes from liquid state to gaseous state at constant temperature.

At constant pressure, work depends only on volume.

In evaporation process, the volume expand that means work is done by the system on the surroundings.

Sign convention is, w = (-ve)

Thus, at constant pressure work is done by the system on the surroundings.

7 0

3 years ago