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A figure skater who while spinning in place drag her arms in to increase her rotational speed is most closely exhibiting which of the following
Answer:-
a) Conservation of angular momentum
b) Centrifugal force
c) Satellite motion
d) Centripetal acceleration
numerical example
A 40 kilogram girl climbs a vertical distance of 5 meters in twenty seconds at a constant velocity. How much work has the girl done? Ans: 2000 joules or 1960 joules work is
Starting from Maxwell's e-m equation, get the wave equation for E in an ionized medium. Identify the dissipative terms in the equation.
Explain the physical significance of gradient of a scalar function?
Suppose Fluid (say, water) occupies a domain D and has velocity field V=V(x, t). A substance (say, a day) is suspended into the fluid and will be transported by the fluid as well
Capacity
In a non-uniform magnetic material, these substances move from stronger parts of the field to the weaker parts.why?
Describe working of Heat engine Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat to work. * It having of a
A 92-kg man uses a 3.05-m board to attempt to move a boulder, as shown in the diagram below. He pulls the end of the board with a force equal to his weight and is able to move it t
Within the elastic region (see the graph below), there exist a between the force applied and the change in the physical state of object. Experiments have shown that the elastic beh
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