5
Explanation:
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Y₀ = initial position of the balloon at the top of the building = 44 m
Y = final position of the balloon at halfway down the building = 44/2 = 22 m
a = acceleration of the balloon = - 9.8 m/s²
v₀ = initial velocity of the balloon = 0 m/s
v = final velocity of the balloon = ?
using the kinematics equation
v² = v₀² + 2 a (Y - Y₀)
inserting the values
v² = 0² + 2 (- 9.8) (22 - 44)
v = 20.78 m/s
Answer:
Explanation:
Given
mass of tin 
Also we know that
specific heat of tin 
Melting Point of Tin 
Heat required to raise the temperature of 100 gm tin is given by

where 




Answer:

Explanation:
Volume can be found by dividing the mass by the density.

The mass is 100 grams and density is 0.920 grams per cubic centimeters.
Therefore,

Substitute the values into the formula.

Divide. Note that the grams, or "g" will cancel each other out.

The volume of the ice cube is 108.697652 cubic centimeters.
They would have disliked that they had to relearn how to measure.