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Simple steelyard (reading to 100 g)
The pan is made from cardboard, and is formed like a funnel. It is fixed to a beam made of a triangular-shaped lamina in ply- wood or 'Perspex'.
The beam tapers from 2 cm at the extreme end to 5 cm near the pan. The pivot, which can be a strong darning needle, is driven by the beam at a point about 5 cm from the pan and 2 cm from the top edge. Some part of the beam or pan can be cut away to make it balance
how much time is required to raise the temperature of the water from A family comes home from a long vacation with laundry to-do and showers to take. The water heater has been t
An electric kettle has a resistance of30?. What current will ?ow when it is connected to a 240V supply? Find also the power rating of the kettle A current of 5A ?ows i
Match the name of every item given in the list below to the label pointing to that item in the diagram. Answer: I guess the only point I desire to stress here is that
Voltage: Voltage is the electrical equivalent of mechanical potential. If a person drops a rock from the first storey of a building, the velocity it will reach when dropped wi
The acceleration of a falling ball The change in speed per second of a moving body is called the acceleration. When it is constant as in the case of a ball falling under the ac
Some wire of cross-sectional area 1mm 2 has a resistance of 20 ?. Determine (a) the resistance of a wire of the same length and material if the cross-sectional area is 4mm 2 ,
MOTION: A body is said to be in motion if it alters its position with respect to its surroundings.
Q. What is the Newton meter? Answer:- A unit of energy is as well known as a Joule. When a force of 1 Newton is used on an object for a distance of 1 meter then 1 Joule of
Resistance: Resistance is the opposition to the motion of electrons. This arises as a result of collision of moving electrons. The unit of resistance is "ohm" represented by
A bullet with mass m is fired into a block of a mass M intially at rest at the edge of a frictionless table of a given height. the bullet remains in the block, and after the impact
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