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
Volgvan
3 years ago
6

By applying a 12-newton horizontal force, a 7-kilogram block is moved 12 meters in 3 seconds on a frictionless, horizontal surfa

ce. How much power was used in moving the block.
A) 144 watts
B)112 watts
C) 16 watts
D) 48 watts
Physics
1 answer:
Mama L [17]3 years ago
6 0
If a 12-N force is applied continuously through a distance
of 12m, then the amount of work done is

           (force) x (distance) = (12 N) x (12 m)  =  144 joules.

Power = (work done) / (time to do the work)

           =     (144 joules) / (3 sec) =  48 joules/sec = 48 watts. 

We don't care what purpose the force was used for,
or how much friction was involved.
You might be interested in
Explain thermodynamics?
Maurinko [17]

Explanation:

the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy

7 0
4 years ago
Read 2 more answers
How does an object behave in differents liquids?
agasfer [191]


If the object has a lower density it will float and it if it has a higher density it will sink, different liquids may also be heavier or lighter causing a different outcome.
7 0
4 years ago
the primary of a transformer connected to 170v has 10 turns. the secondary has 70 turns. find voltage. this is a step down trans
Nikolay [14]
No it isn't. (Unless you connect it backwards.)

If the primary has 10 turns and the secondary has 70 turns,
then the voltage that appears across the secondary is
7 times the voltage that you feed to the primary.

If you're 'exciting' the primary with 170 volts, then you need
to be cautious around the secondary terminals, because there's 
1,190 volts there !

If you want to use your transformer in a step-down configuration,
you can certainly connect it up the other way around.

Feed the 170 volts to the winding with 70 turns.  You've reversed
the labels 'primary' and 'secondary', and that's OK.  The voltage
at the terminals of the 10-turn winding will be (170/7) = 24.3 volts.
4 0
4 years ago
About what fraction of earth's freshwater is in the form of ice
Bingel [31]
68% So 68/100 of freshwater is found in ice
3 0
3 years ago
In a well thought out and coherent paragraph, explain how stars are categorized in an HR Diagram
labwork [276]

The Hertzsprung-Russell Diagram is a graphical tool that astronomers use to classify stars according to their luminosity, spectral type, color, temperature and evolutionary stage. Stars in the stable phase of hydrogen burning lie along the Main Sequence according to their mass.

3 0
3 years ago
Other questions:
  • Which force does not operate at a distance of 1 m?
    9·1 answer
  • What a measurement standard is defined as?
    11·2 answers
  • Que ocurre cuando un globo electrizado se toca con uno que no?
    8·1 answer
  • Consider the third period of the periodic table. Which element has the smallest atomic radius?
    5·1 answer
  • 1. Sketch graphs of the momenta of asteroids A and B before the collision.
    5·2 answers
  • Sorin hits a cricket ball straight up into the air. After 1.5\,\text{s}1.5s1, point, 5, start text, s, end text, the ball is fal
    15·1 answer
  • Can someone help with these/
    8·1 answer
  • Two eagles fly directly toward one another, the first at 14.5 m/s and the second at 22.5 m/s. Both screech, the first one emitti
    12·2 answers
  • Write two daily life examples for each of the following:
    6·1 answer
  • What is gram used to measure <br><br> A. volume<br> B. Mass<br> C. distance<br> D. Time
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!