Please helpwhy does 45° produce a max. range?
1 answer:
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Answer:
a)The temperature of the gas in increased by four times its original value.
Explanation:
For a fixed amount of a gas, the ideal gas equation can be written as follows:
where
p is the gas pressure
V is the gas volume
T is the gas temperature (in Kelvins)
For a gas under transformation, the equation can also be rewritten as
where the labels 1,2 refer to the initial and final conditions of the gas.
In this problem, we have:
- The pressure of the gas is doubled:
- The volume of the gas is doubled:
Substituting into the equation, we find what happens to the temperature:
So, the correct choice is
a)The temperature of the gas in increased by four times its original value.
Answer:
.
Explanation:
The heat needed will be provided by the power dissipated by the resistor. This power gives certain energy per unit time, so we multiply it by time to get the energy provided: .
The equation of heat given mass, specific heat and temperature change is , and the equation of power dissipated by a resistor is
.
Putting all together:
.
Which means:
.
From 23.0°C to 100°C we have a , which we won't need to put in Kelvin in this case since it is a variation, so for our values we have:
.