Answer:
output work is not possible to have more than 294 kJ value so this is not reasonable claim
Explanation:
As we know that the efficiency of heat engine is given as
now we will have
now we know that efficiency is defined as
So output work is not possible to have more than 294 kJ value
Water cycle, evaporation, condensation, and freezing
Answer:
77.08 C
Explanation:
= mass of the water = 500 g = 0.5 kg
= specific heat of water = 4186 J/(kg °C)
= Rate of change of temperature = 3 °C /min = (3/60 ) °C /s = 0.05 °C /s
= thermal conductivity of glass = 0.84
= Area of the element = 0.090 m²
= thickness of the element = 1.5 mm = 0.0015 m
= Temperature inside = 75 °C
= Temperature outside = ?
Using conservation of energy
Heat gained by water = Heat transferred through glass
Answer:
Explanation:
The electric field on the surface of a conductor is given by:
Here is the surface charge density and the permittivity of free space. Thus, the highest surface charge density that can exist in a conductor is given by the value of the dielectric breakdown of the air multiplied by the permittivity of free space:
Answer:
8.467 gm
Explanation:
The law governing this problem is "The Law of Constant Composition "
As per this law, all compounds irrespective of their origin and source have the same composition and properties in their purest form
It is a simple proportion and ratio related problem.
1.50 grams of carbon require 2.0 grams of oxygen
1.0 grams of carbon will require oxygen
=
6.35 grams of carbon will require oxygen
= 8.4666\\= 8.467