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
zavuch27 [327]
3 years ago
11

People often use simple machines like pulleys, levers, and ramps because they say the machine “makes the work easier.” Which of

the following statements about simple machines is true?
a.
Simple machines often reduce the amount of work to move an object.

b.
Simple machines often reduce the energy required to move an object.

c.
Simple machines often reduce the power consumed when moving an object.

d.
Simple machines often reduce the force needed to move an object.
Physics
1 answer:
dimulka [17.4K]3 years ago
3 0
I think the answer is D.
Hope this help
You might be interested in
factors that affect health, including genetic, lifestyle, socioeconomic, and physical environmental factors.​
scZoUnD [109]
Yes? I think a tutor would help with this!!!!
5 0
3 years ago
The temperature of an object is a measure of the average potential energy of the molecules in the object.
pav-90 [236]

Answer:

false

Explanation:

the temperature of an object is a measure of the average KINETIC ENERGY of the molecules in the object (not potential energy)

3 0
3 years ago
3. What is the kinetic energy of a 1300 kg car moving at 26.3 m/s?
Alexxx [7]

Answer:K.E=449598.5j

Explanation:

Kinetic energy of a moving car=1/2mv^2

Where m is the mass of the car

And V is the velocity of the car

K.E=1/2 ×1300×26.3^2

K.E=449598.5j

3 0
3 years ago
What are some of the differences between solids, liquids, and gases?
9966 [12]

Answer:

SOLIDS                                     LIQUIDS  

Have a definite shape.        Don't have a definite shape.

Have a definite mass.         Have a definite mass.

Have a definite volume.       Have a definite volume.

GASES

Have a definite mass.

Don't have a definite volume.

Don't have a definite shape.

DEFINITE- CLEARLY STATED OR EXACT TRUTH ABOUT A FACT.

Explanation:

7 0
3 years ago
Why is reaching activation energy necessary? Reactants require a minimum amount of energy to start to break a chemical bond. Pro
Ksju [112]

Answer:

<em>Reaching activation energy</em><em> is necessary because reactants require a </em><em>minimum</em><em> </em><em>amount of energy</em><em> start breaking a</em><em> chemical bond.</em>

Explanation:

Activation energy is the minimum amount of energy required by the reactants to initiate a chemical reaction. The unit of activation energy is joule or  kilo joule per mole or kilo calories per mole. Activation energy depends on temperature.

The temperature dependence of activation energy is given  by Arrhenious equation. Activation energy is a threshold value of energy. For any reaction to occur this is the minimum amount of energy required.

7 0
4 years ago
Read 2 more answers
Other questions:
  • Which term denotes that the mere presence of other people in your environment affects your behavior
    13·2 answers
  • PLEASE HELP i really need help with these
    14·2 answers
  • Please help I'll give brainliest!!
    14·2 answers
  • Se lanza una piedra de 3.00 N verticalmente hacia arriba desde el suelo. Se observa que, cuando está 15.0 m sobre el suelo, viaj
    11·1 answer
  • A 2.0-g piece of Mg reacts with HNO3. Which conditions would produce the GREATEST reaction rate
    9·1 answer
  • calculate the power of a pump which lift 800kg of water through a vertical height of 12cm in 0.3minutes assuming gravity= 9.8 me
    10·1 answer
  • A ball is thrown upward at 25 m/s from the ground. what is the balls velocity after 4 seconds?​
    11·1 answer
  • In Newton's cannonball experiment, if the velocity is equal the orbital velocity the Cannon ball
    9·1 answer
  • The briquette is better fuel than wood why give two reason​
    12·1 answer
  • How much tension must a cable withstand to accellerate a 1400 kg car vertically upward at 0.70 m/s^2
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!