1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
goldenfox [79]
3 years ago
6

What will be the ME of a machine that produces a 240 N work with a 300

Physics
1 answer:
Elden [556K]3 years ago
3 0

Answer:

Efficiency = 80%

Explanation:

Given the following data;

Work output = 240 N

Work Input = 300 N

To find the mechanical efficiency of a machine;

Efficiency = \frac {Out-put \; work}{In-put \; work} * 100

Substituting into the equation, we have;

Efficiency = \frac {240}{300} * 100

Efficiency = 0.8 * 100

Efficiency = 80%

Therefore, the mechanical efficiency of the machine is 80 percent.

You might be interested in
If a distant galaxy has a substantial redshift (as viewed from our galaxy), then anyone living in that galaxy would see a substa
mario62 [17]

Answer:

Option A

Explanation:

The statement makes sense since it's already explained that the galaxy is moving away from us and unlike option C which depicts that the galaxy is moving to us.

This statement makes sense. The redshift means that we see the galaxy moving away from us, so observers in that galaxy must also see us moving away from them—which means they see us redshifted as well

3 0
3 years ago
Which of the fundamental forces explains the structure of atoms and molecules?
spayn [35]
The electromagnetic force<span> holds atoms and molecules together.
like a magnet's pull on steel.</span>
7 0
3 years ago
Read 2 more answers
If you were designing a room in a house, where would be the better place to put a heater, near the floor or near the ceiling? Wh
taurus [48]

Answer: The correct explanation is 2.

Explanation: The warm air is less dense (it expands) and thus it is lighter than the cold air so it will rise up to the floor. Therefore, when you place the heater on the floor it will warm the cold air which would then rise and be replaced by more cold air which would again get warm and rise and so on until the room is heated. This means that the correct explanation is 2.

On the other hand, if you put the heater at the ceiling, it will warm the cold air near the ceiling which would stay up there (it is lighter than the cold air under it). This means that the only way for the heat to spread from this ceiling level warm air to the lower levels is via conduction which is slow.  

5 0
3 years ago
What is angular velocity
butalik [34]

Answer:

angular velocity(ω) is the rate change of angular displacement.

ω=θ/t and it SI unit is rad/s

Explanation:

this is very similar with the definition of linear velocity (rate of change of displacement). it specifies the angular speed of an object and the axis about which the object is rotating.

7 0
2 years ago
How is humidity related to air pressure?
Vlad [161]
Humid air has higher pressure because of the heaviness of the water
7 0
3 years ago
Read 2 more answers
Other questions:
  • What type of mechanical wave needs a medium?
    9·1 answer
  • A sample of gold has a mass of 38.6 grams and a volume of 2 cm3 what is the density of gold
    9·2 answers
  • You construct a circuit containing some component C, along with other circuit elements. You want to simultaneously measure the c
    14·1 answer
  • The flow of electrons from one atom to another is called
    12·1 answer
  • Which process in the water cycle MUST occur directly before water can become groundwater?
    12·1 answer
  • a cylinder of mass 34.5 kg rolls without slipping on a horizontal surface. At a certain instant, its center of mass has a speed
    9·2 answers
  • A dolphin can swim at a constant speed of 12.5 m/s. How
    14·2 answers
  • When a charged particle moves along a helical path in a uniform magnetic field, which component determines the pitch of the path
    10·1 answer
  • What is the shallowest part of the ocean ecosystem is called
    13·1 answer
  • Between the ball and the player's head, there are forces. Which of Newton's laws does this represent? Support your choice.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!