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
madam [21]
3 years ago
11

How do I calculate the efficiency of motor

Physics
1 answer:
zepelin [54]3 years ago
7 0

Answer:

the formula is efficiency = output / input × 100%

You might be interested in
Tory has a mass of 40kg. She sleds down a hill that has a slope of 25 degrees. what is the component of her weight that is along
Fudgin [204]

1.7 x 10^2 N

or 166 N

First you find the vertical component of the weight, which is 9.8*40, (g*m), which is 392 N. You then find the angle between that and the slope, which is 90-25, which is 65. You then multiply the vertical weight by cos(65), to find the component of that that is parallel to the slope. You get 165.666 N

3 0
3 years ago
А A van accelerates from Amst to zomst in 8s. How far does it<br>travel in<br>this time?​
8_murik_8 [283]

Answer:

1663m

Explanation:

mark brainliest

6 0
3 years ago
Suppose you could fit 100 dimes, end to end, between your card with the pinhole and your dime-sized sunball. how many suns could
Naddika [18.5K]

Answer: 100 suns

Explanation:

We can solve this with the following relation:

\frac{d}{x_{sunball-pinhole}}=\frac{D}{x_{sun-pinhole}}

Where:

d=17.91 mm =17.91(10)^{-3}  m is the diameter of a dime

D is the diameter of the Sun

x_{sun-pinhole}=150,000,000 km=1.5(10)^{11}  m is the distance between the Sun and the pinhole

x_{sunball-pinhole}=100 d=1.791 m is the amount of dimes that fit in a distance between the sunball and the pinhole

Finding D:

D=\frac{d}{x_{sunball-pinhole}}x_{sun-pinhole}

D=\frac{17.91(10)^{-3}  m}{1.791 m} 1.5(10)^{11}  m

D=1.5(10)^{9}  m This is roughly the diameter of the Sun

Now, the distance between the Earth and the Sun is one astronomical unit (1 AU), which is equal to:

1 AU=149,597,870,700 m

So, we have to divide this distance between D in order to find how many suns could it fit in this distance:

\frac{149,597,870,700 m}{1.5(10)^{9}  m}=99.73 suns \approx 100 suns

8 0
3 years ago
you place a beaker of water on a hot plate and heat it up eventually it starts to boil and you see bubbles for me you also seeme
Nuetrik [128]
It's a physical change. the water is changing it's physical state

8 0
3 years ago
Read 2 more answers
Someone please helpppp!
Vlad1618 [11]
I believe it’s A, i could be wrong tho 3
8 0
3 years ago
Other questions:
  • An aluminium bar 600mm long1 with diameter 40mm, has a hole drilled in the centre of the bar. The hole is 30mm in diameter and i
    7·1 answer
  • A 0.18-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o’clock position, t
    7·1 answer
  • The principal of uniformitarian states that
    5·1 answer
  • What is the definition of zenith, altitude, horizon, circompolar stars, astrolabe, and doppler effect in astronomy?
    13·1 answer
  • At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 226 N/C. At a distance r2 fro
    5·2 answers
  • A car accelerates uniformly from rest and reaches a speed of 21.9 m/s in 8.99 s. Assume the diameter of a tire is 57.5 cm. (a) F
    5·1 answer
  • a student drops an object from the top of a building which is 19.6 m high. How long does it take the object to fall to the groun
    13·2 answers
  • The doppler effect is when objects are not moving?<br><br> True <br><br> False
    9·1 answer
  • A dog and a cat sit on a merry-go-round. The dog sits 0.3 m from the center. The cat sits 1.5 m from the center. The whole merry
    6·1 answer
  • A 23.0 kg child is riding a playground merry-go-round that is rotating at 30.0 rpm. What centripetal force, in N, must she exert
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!