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
Natali5045456 [20]
2 years ago
14

A 4KJ of energy is supplied to a machine used for lifting a mass. The force required is 800N. If the machine has an efficiency o

f 60℅,to what height will it lift the mass?​
Engineering
1 answer:
navik [9.2K]2 years ago
8 0

The height at which the mass will be lifted is; 3 meters

<h3>How to utilize efficiency of a machine?</h3>

Formula for efficiency is;

η = useful output energy/input energy

We are given

η = 60% = 0.6

Input energy = 4 KJ = 4000 J

Thus;

0.6 = useful output energy/4000

useful output energy = 0.6 * 4000

useful output energy = 2400 J

Work done in lifting mass(useful output energy) = force * distance moved

Useful output energy = 800 * h

where h is height to lift mass

Thus;

800h = 2400

h = 2400/800

h = 3 meters

Read more about Machine Efficiency at; brainly.com/question/3617034

#SPJ1

You might be interested in
Say that a variable A in CFG G is necessary if it appears in every derivation of some string w ∈ G. Let NECESSARY CFG = {hG, Ai|
ale4655 [162]

Answer:

Explanation:

solution

8 0
3 years ago
Read 2 more answers
Una empresa realizó en el ejercicio de compras al contado por valor
Tanzania [10]

Answer:

englishhhh pleasee

Explanation:

we dont understand sorry....

8 0
3 years ago
Not sure which one....
Airida [17]
I think downwards as that's how most saw's work.
4 0
3 years ago
Prefix version of 6600 volts​
GenaCL600 [577]

Answer:

6.6 kilo volts = 6.6 k volts

Explanation:

A prefix is a word, number or a letter that is added before another word. In physics we have different prefixes for the exponential powers of 10, that are placed before units in place of those powers. Some examples are:

deci (d)   ------  10⁻¹

centi (c)   ------  10⁻²

milli (m)   ------   10⁻³

kilo (k)     ------   10³

mega (M) -----   10⁶

giga (G)   ------   10⁹

We have:

6600 volts

converting to exponential form:

=> 6.6 x 10³ volts

Thus, we know that the prefix of kilo (k) is used for 10³.

Hence,

=> <u>6.6 kilo volts = 6.6 k volts</u>

7 0
3 years ago
BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
sergejj [24]

Answer:

BOO

Explanation:

8 0
2 years ago
Other questions:
  • Find the resolving power of a Fabry-Perot interferometer in which two silver coated plates have reflectance of ???? = 0.9, if th
    12·1 answer
  • 6. Staples are the most common item used to secure and support cables in residential wiring.​
    14·1 answer
  • Kjhwe ,kenwif ujwfeowlwfwfwfw...
    14·2 answers
  • In case of damaged prestressed concrete I girders which are used for restoring strength?
    9·1 answer
  • How do I calculate the gear ratio​
    6·1 answer
  • At a festival, spherical balloons with a radius of 140.cm are to be inflated with hot air and released. The air at the festival
    10·1 answer
  • A simply supported wood roof beam is loaded with single point dead and roof live loads applied at midspan (PD = 400 lb, PLr = 16
    9·1 answer
  • An automobile having a mass of 1100 kg initially moves along a level highway at 110 km/h relative to the highway. It then climbs
    7·1 answer
  • Need help with these 3 ez questions pls help me.
    6·1 answer
  • How many shift pulses would be required to serially shift the contents of one five-stage register to another five-stage register
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!