When the same amount of heat is added to 50.0 g of each substance, which of the following will have the smallest temperature inc
rease?
1 answer:
Answer:
Aluminium
Explanation:
When a certain amount of heat is supplied to a substance, the temperature of the substance increases according to the equation:
where
is the increase in temperature
Q is the amount of heat supplied to the substance
m is the mass of the substance
C is the specific heat capacity of the substance
Here the four substances have the same mass,
m = 50.0 g
Also, the amount of heat supplied to the 4 substances is the same. This means that their increase in temperature is inversely proportional to their specific heat capacity:
Therefore, the substance with the highest specific heat capacity will have the smallest temperature increase: by comparing the values in the table, we see that alluminium has the highest specific heat capacity (0.90 J/gC), therefore it will have the smallest temperature increase.
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Theta1 = 12° and theta2 = 168°
The solution procedure can be found in the attachment below.
Explanation:
The Range is the horizontal distance traveled by a projectile. This diatance is given mathematically by Vo cos(theta) t. Where t is the total time of flight of the projectile in air. It is the time taken for the projectile to go from starting point to finish point. This solution assumes the projectile finishes uts motion on the same horizontal level as the starting point and as a result the vertical displacement is zero (no change in height).
In the solution as can be found below, the expression to calculate the range for any launch angle theta was first derived and then the required angles calculated from the equation by substituting the values of the the given quantities.
