Abimetallic strip consists of two metals: a on top and b at bottom. at temperature 00c this bimetallic strip was rigidly attached to the vertical wall with one end, so strip is horizontal. we know that coefficient of thermal expansion of metal a is less than coefficient of thermal expansion of metal b. temperature starts to raise. what happens to the bimetallic strip?

a. nothing happens
b. it contracts in horizontal direction
c. it bends down
d. it bends up
e. it expands in horizontal direction

e. it expands in horizontal direction

Explanation:

By the law of thermal expansion of metals we know that when a metal is heated it expands due to the thermal properties of its molecules.

Mathematically this expansion in its length is given by:

where:

original length of the metallic piece

coefficient of linear expansion

rise in temperature

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be