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A man moves from A to C in 10 minutes and returns from C to B in 2 minutes find the average speed and average velocity from
1) A to C
2) A to C and back...
How much heat is required to convert 6.00 g of ice at -10.0 C to steam at 100.0 C? Express your answer in joules, calories and Btu.
If the distance between a point source and a surface is tripled the illumination on the surface will be
A stone of mass 3 kg was whirled around a circular path of radius 1200 mm with a velocity of 108 km/hr. a) Calculate acceleration at the stone b) Calculate the force acting on the stone in the circle Answer: Convert...
Q: Electric lines of force never cross; why?
Electric field E and the electric...
A stone is thrown upward with a certain speed on a planet where the free fall acceleration is doubled that on earth. how high does it rise compared the height it rises on earth? if the initial speed...
1. Two coins lie 1.5 m apart on a table. They carry identical charges. How large is the charge on each if a coin experiences a force of 2 N.
A concave mirror is said to have a real focus where as convex mirror is said to have virtual focus . Apply the same logic to concave and convex lenses and say which of them has a real focus and which has...
An electrified rod attracts pieces of papers.After a while these pieces fly away.why?