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#### Average Velocity and Average Speed

**Question:**

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...

#### Heat required to melt ice and make steam

**Question:**

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.

**Answer:**

#### Illumination and Inverse Square Law for Light Sources

**Question:**

If the distance between a point source and a surface is tripled the illumination on the surface will be

(A) tripled

(B) doubled

(C) reduced...

#### A stone of mass 3 kg was whirled around

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...

#### Gravitational

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...

#### charges

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.

#### Light

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...

#### Physics

An electrified rod attracts pieces of papers.After a while these pieces fly away.why?