PHYSICS HIGH SCHOOL

What is the equation for calculating a machine's efficiency?I searched all over my textbook and couldn't find it, so I decided to post my question here.

Answers

Answer 1
Answer:

Efficiency of a machine is defined as the ratio of work performed on it to work performed by it.

What is the fundamental meaning of efficiency?

  • Efficiency is the capacity to achieve something or get a desired outcome without wasting resources, time, money, energy, or effort. In a broader sense, it is the capacity to carry out tasks effectively and efficiently.
  • Effectiveness and efficiency are frequently misunderstood. Efficiency is often a quantifiablenotion that is based on the ratio of total useful input to total useful output.
  • When a machine uses the majority of the power provided to it for its load and just a small portion for waste, it is said to be highly efficient.

Efficiency = Output energy/ Input energy

The percentage value of efficiency of a machine is calculated as:

Efficiency = (Output energy/ Input energy) X 100%

Learn more about the machine efficiency with the help of the given link:

brainly.com/question/11752408

#SPJ2
Answer 2
Answer: Efficiency is usually defined as how much useful work output do you get for each unit of work input. 

Efficiency = work output/work input 

Work input = effort force * effort distance 
Work output = load force * load distance 

Related Questions

The two factors that determine velocity are....A: speed and direction B: direction and distance C: position and rateD: distance and massplease help which one are these . for science class
Which of the following is an example of a decomposition reaction?a. photosynthesis b. digestion c. polymerization d. exchange of ions between two compounds
Rain,wind,industrial agriculture and waves causes what
When Javier touches a hot mug of tea, energy is transferred from the surface of the mug to his hand. What kind of energy is this? nuclear radiant thermal chemical
Which example involves the transformation of chemical energy directly into light energy? A) a wind mill Reactivate B) a glow stick C) photosynthesis D) a hydroelectric dam

_______ are atoms that carry an electric charge. A. Colloids
B. Electrolytes
C. Nonelectrolytes
D. Ions

Answers

the answer is D. hope this helps.

Answer:

Ions are atoms that carry an electric charge.

Explanation:

An ion is an atom or molecule that does not have a neutral electric charge. In other words, ions are atoms or groups of atoms that have an electric charge. Ions with a positive charge are called cations. Those with a negative charge are called anions.

Ionization is the formation of electrically charged molecules or atoms. Atoms are electrically neutral. The loss of one or more electrons from a neutral atom forms a cation. Conversely, an anion is an ion whose net charge is negative due to an increase in the number of electrons.

Cations and anions are usually represented with the symbol of the corresponding atom or group of atoms and the symbol "+" or "-", respectively. If the number of electrons gained or lost is greater than one, this is indicated by the corresponding number.

Please help me with this practice question

Answers

the answer is c hopes this helps

the wires inside a cable each have there own plastic insulation .why does the insulasion have diffrent colours

Answers


A cable is a bundle of two wires or three wires or a thousand wires,
inside a single 'tube'.  In order for the cable to be useful, you need to
be able to match each wire at one end of the cable to the same wire
at the other end.  If each wire has a different physical appearance,
then it's easy.

What force is necessary to accelerate a 70-kg object at a rate ifm4.2 m/s

Answers

F = ma
F = force
m = mass
a = acceleration

4.2 m/s = a
70 kg = m
F = ?

F = 4.2*70
F = 294 Newtons

Answer would then be : Force = 294 N

What forces are acting on a book lying on the table? Are action-reaction forces involved in this situation?

Answers

There is a weight force acting on the book downwards. There is a normal contact force also on the book upwards. These are equal and opposite. These two force are NOT an action-reaction couple (they are different types, they both act on the book)

How do different cells in your body help you survive?

Answers

Different cells in our bodies perform different functions,hense they work together to make sure that the body functions well
Other Questions
Select all the features that can be created by acidic water
A measurement that has both magnitude and direction
A railroad car with a mass of 1.94 ✕ 104 kg moving at 3.28 m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.02 m/s. what is the velocity after the collision and the total kinetic energy lost?
Explain why the current is reduced as electrons move through a conductor.