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Nimfa-mama [501]
4 years ago
7

A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase,

the company asked the manufacturer to provide data on a certain machine's efficiency. The data suggests that with a supplied energy at a rate of 1600 w, the machine will do useful work at a rate of 1540 w. What's the efficiency of this particular machine
Physics
2 answers:
Helen [10]4 years ago
8 0
The mechanical efficiency = actual work / ideal work

So ζ = 1540 / 1600 * 100% = 96.25%
s2008m [1.1K]4 years ago
4 0

Answer:

96.25%

Explanation:

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3. A sprinter leaves the starting blocks with an acceleration of 4.5 m/s2. What is the
UkoKoshka [18]

Hi there! :)

\large\boxed{v_{f} = 18 m/s}

Use the following kinematic equation to solve for the final velocity:

v_{f} = v_{i} + at

In this instance, the runner started from rest, so the initial velocity is 0 m/s. We can rewrite the equation as:

v_{f} = at

Plug in the given acceleration and time:

v_{f} = 4.5 * 4 = 18 m/s

5 0
3 years ago
Which of the following are found within the electromagnetic spectrum? Check all that apply. sound waves visible light X rays ult
sattari [20]

Answer:

Visible light

X rays

ultraviolet radiation

gamma rays

microwave radiation

Explanation:

Electromagnetic waves consist of oscillating electric and magnetic fields which vibrate in a direction perpendicular to the direction of motion of the wave (transverse wave). Electromagnetic waves have all same speed in a vacuum (c=3.0\cdot 10^8 m/s, known as speed of light) and are classified into 7 different types according to their frequency and wavelength. This classification is called electromagnetic spectrum.

From lowest to highest wavelength, the 7 types are:

Gamma rays

X-rays

Ultraviolet radiation

Visible light

Infrared radiation

Microwaves

Radio waves

Sound waves, on the contrary, do not belong to the electromagnetic spectrum, since they are another type of wave called mechanical waves (which consist of vibrations of the particles in a medium).

8 0
3 years ago
which form of energy does a battery-powered flashlight receive as an input? chemical A) potential energy B) radiant energy C) so
geniusboy [140]
I believe that the best answer among the choices provided by the question is the second choice ,<span>B) radiant energy

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Hope my answer would be a great help for you.    If you have more questions feel free to ask here at Brainly.


5 0
4 years ago
Read 2 more answers
If gas costs $3.65 per gallon at a local service station, how many cubic feet of gas can a customer buy with $40 ?
svet-max [94.6K]
Hi, thank you for posting your question here at Brainly. 

For consistency you must convert gallons to cubic foot. The conversions are:

7.481 gal = 1 ft3

Then, $3.65 per gallon becomes $27.3 per ft3. If you buy $40 worth of gas, you get $40/$27.3 = 1.46 ft3 of gas. 

If you can travel for 4 miles per ft3, then with the amount of gas you have, you can travel up to 5.85 miles.

(4 miles/ft3)*(1.46 ft3) = 5.85 miles
3 0
3 years ago
What is the term for a motion you make on a touch screen with the tip of one or more fingers or your hand?
frozen [14]
Double tap, zoom in.

please vote my answer brainliest. thanks!
6 0
3 years ago
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