Answer: No
Explanation:
The work done is not path-dependent but only dependent on the final and initial position of the charge, that is the difference between the end points.
Central heating is often used in cold climates to heat private houses and public buildings. Such a system contains boiler, furnace, heat pump to heat water, steam or air, all in a central location such as furnace room in a home or a mechanical room in a large building. The use of water as the heat transfer medium is known as hydronics.
Answer: a simple example of this would be the strong man game that can be found at most theme parks and fairs
Explanation: in the game you use a hammer to strike a buzzer or bell this causes the game to react by shooting up a small object giving you Newton’s third law your action had an equal or opposite effect on the bell and object that shoots up
The correct answer of the question is : A) Orbits a star, B) Gravity makes spherical and D) Clear orbits of other objects.
EXPLANATION :
The classification of a celestial object to be a planet depends on some parameters.
The most important thing about the planet is that it must clear its orbit. It means it won't share its orbit with other planets. Otherwise, it will be considered as a dwarf planet.
The second thing is that it must move around any stars. The star becomes the centre of that solar system around which planets start revolving in different orbits.
The third thing is that planets are approximately spherical in shape.
The size of the planets does not play a crucial role in the classification of planets. Planets may be smaller than mercury also.
Hence, all the options except the third one are suitable.
Answer:
The torque must be applied to the wheel is 15.7 N-m.
Explanation:
Given that,
Mass of the wheel of cylinder, m = 50 kg
Diameter of the wheel, d = 1 m
Radius, r = 0.5 m
Initial speed off the wheel is 0
Final angular speed of the wheel, 120 rev/min = 12.56 rad/s
Angular displacement, 
The torque is given by :
So, the torque must be applied to the wheel is 15.7 N-m.
