What is the maxium amount of work that a 6000 watt motor can do in 10 seconds?
Answers
Answer: The work done by the motor is 60000 J
Explanation:
Power is defined as the rate of work done by an object with respect to time.
Mathematically,
where,
P = power of the motor = 6000 W
W = work done by the motor = ?
t = time taken = 10 sec
Putting values in above equation, we get:
Hence, the work done by the motor is 60000 J
Related Questions
The force of gravity on you is greatest when you are standing _____.a. far above Earth's surface b. just above Earth's surface c. on Earth's surface
A bookshelf is 2m long, with supports at its end (p and q). A book weighing 10N is placed in the middle of the shelf. what are the upward forces acting on p and q. if the book is moved 50 cm from q, what are the forces at p and q now?
which of the following is the true statement ? a. the magnetic force is perpendicular to the magnetic field direction. b. the magnetic force is parallel to the magnetic field direction. c. the magnetic force is antiparallel to the magnetic field direction. d. none of these
Why is most space exploration accomplished with spacecraft that do not have astronauts on board
Answers
Answer:
False
Explanation: Sticking fingers into a wall socket will bring us into direct contact with an electrical current because human body is a conductor of electricity. Effect of electric current is visible when circuit of flow is complete. In this case when we touch live wire or socket human body complete its circuit and get an electric shock. Sometimes this can be avoided by wearing footwear made up of insulator.
b. 48.91 s
c. 48.910 s
d. 48.9 s
Answers
Answer:
Least precise recorded time is 48.9 seconds.
Explanation:
Here, we need to write the recorded time that is least precise. The given options are (a) 48.9107 s (b) 48.91 s (c) 48.910 s (d) 48.9 s. The precision in any measurement is defined as closeness in any measurement.
First option is most precise as it is precised to four decimal places. Second option is precised to two decimal places. Third option is precised to 3 decimal places. But in option fourth, the recorded time is precised to one decimal place.
Hence, the correct option is (d).
Answers
Answer;
A barrier, a surface or a boundary
Explanation;
Reflection is the property waves that occurs due to the bouncing back of a wave after it strikes a barrier.
Reflection involves change in direction of a wavefront at an interface between two different media such that the wavefront returns into the medium from which it originated. In other words, the direction of the wave changes when they bounce of a barrier or a surface.
Reflector is some sort of material that is used to collect or bounce off energy such as sound, light, or radio wave
Usually it took form in some sort of parabolic that revolve around an axis
Answers
The Earth takes very nearly (365 and 1/4) days to go around the sun.
If our calendar always had 365 days, then the year would end and re-start
too soon, and the beginning of Spring (and every other season) would
eventually drift into the months after March.
If our calendar always had 366 days, then the year would end and re-start
too late, and the beginning of Spring (and every other season) would
eventually drift into the months before March.
We can't make calendars with an extra quarter-day in each year. But we
keep them lined up with the real year by saving up the quarters, and adding
one full day to the calendar every 4 years.
Answers
Answer:
Explanation:
The internal energy of any material is calculated as the sum of kinetic and potential energy of randomly distributed molecules.
This energy depends on temperature as well, if the temperature will increase the randomness will also increase hence will be the internal energy.
If any work is done on the system, then also the internal energy of the system is increased.