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A 35-kg child is riding on a swing that rises to a maximum height of 0.80 m.
Neglecting friction, what is the child's gravitational potential energy at the top of the swing?
What is the child's kinetic energy at the top of the swing?
Properties of light: The wavefronts can be of different shapes depending on the size and shape of light source and the distance from it. Huygens' principle states that every p
Draw a free-body diagram for a goldfish that is motionless in the middle of a fish bowl. Recognize the forces acting on the fish. Show the direction of the net force on the f
How are glass fiber ended? Glass fibers are, usually potted or encapsulated at the single end with the help of an epoxy compound or adhesive. It results on a very hard element
A ball dropped from a balloon at rest clears a tower 81m high during the last quater second of its journey. Find the height of the balloon and the velocity of the body when it rea
Hooke's law (R. Hooke): The stress applied on any solid is proportional to the strain it generates in the elastic limit for that solid. The constant of that proportionality is
in some case we take y=-g but in some case we take y=g... why???
Q. Explain Mirror - Lens Equation? A central equation in optics relates the focal length, object distance and image distance for a thin lens or mirror. This equation is general
Explain the basic concept of sonar. Basic concept of SONAR: Sonar is based ontpo the echo-sounding technique of ultrasound. While an ultrasonic wave is transmitted by water,
A swimmer swims across a 20-meter-wide river at 0.3 m/s. The river is running at 0.1 m/s. What is resultant velocity of the swimmer, and at what angle with respect to his original
It is a parameter of an insulator that defInes the maximum voltage difference that can be applied across the material before the insulator collapse and conducts.
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