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
enot [183]
3 years ago
14

The electric motor has an input energy of 50,000 joules each second. The motor transfers 35,000 joules of useful energy each sec

ond. Calculate the efficiency of the electric motor (show workig out too)
Physics
1 answer:
Sergio039 [100]3 years ago
6 0
W(out)/w(in)
35,000J/50,00J=.7
.7 *100%=70 % efficient
You might be interested in
A butcher grinds 5 and 3/4 lb of meat then sells it for 2 and 2/3 pounds to the customer what is the maximum amount me that the
KiRa [710]

Answer:

The maximum amount of meat that the butcher can sell is  3\frac{1}{12}\:lb

Explanation:

The maximum amount can be found by taking the difference of mixed numbers.

5\frac{3}{4}-2\frac{2}{3}\\\\\mathrm{Subtract\:the\:numbers:}\:5-2=3\\\\\mathrm{Combine\:fractions:\:}\frac{3}{4}-\frac{2}{3}=\frac{1}{12}\\\\=3\frac{1}{12}\\

Best Regards!

8 0
3 years ago
A bald eagle is flying to the left with a speed of 34 meters
Shtirlitz [24]

Answer:

the speed after 3 seconds is 10 m/s

Explanation:

The computation of the speed is shown below:

As we know that

V = U  + at

Here,

U = 34 m/s

a =  - 8 m/s²

t = 3 Sec

V = velocity after 3 sec

V  = 34 + (-8)3

 = 34 - 24

 V = 10 m/s

Hence, the speed after 3 seconds is 10 m/s

4 0
2 years ago
What is a positive impact of artificial fertilizers
dybincka [34]
<span>The top benefit of pesticides is their effectiveness against pests that would otherwise decimate crops large and small. </span>
5 0
3 years ago
Which term describes the time it takes for half of a radioactive elements atoms to decay?
devlian [24]
I think that is half-life
6 0
3 years ago
How does the mass of something affect the potential energy?
jonny [76]
 Mass is <span>is a dimensionless quantity representing the amount of matter in a particle or object. The more mass something has, the more energy is used to lift it.</span>
7 0
3 years ago
Other questions:
  • A long solenoid has a length of 0.67 m and contains 1700 turns of wire. There is a current of 5.5 A in the wire. What is the mag
    9·1 answer
  • Question 4. A tuning fork ‘A’ produces 6 beats/sec with another fork ‘B’ of un-known frequency. On
    14·1 answer
  • 20pts! What are the thin fibers of the human nervous system called?
    7·2 answers
  • A wooden ring whose mean diameter is 15.0 cm is wound with a closely spaced toroidal winding of 555 turns. Compute the magnitude
    11·1 answer
  • What represents the third dimension in a topographic map and shows elevation?
    12·2 answers
  • A 112 g hockey puck sent sliding over ice is stopped in 16.8 m by the frictional force on it from the ice. (a) If its initial sp
    7·1 answer
  • A ball strikes a wall. It exerts a force of 10 N to the left against the wall and bounces off. What force does the wall exert on
    13·2 answers
  • Standard Heat of Formation: The enthalpy change for the formation of 1 mol of a substance in its standard state from its constit
    14·1 answer
  • How many stars are on the us flag?
    12·2 answers
  • Why is people to come together and combine their efforts?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!