Answer:
Explanation:
The Carnot cycle is a special case of a thermodynamic cycle that produces an ideal gas and consists of two isothermal processes and two adiabatic processes. This cycle is a theoretical solution given by Sadi Karnot to refine heat engines for their efficient use.
The formula for the coefficient of efficiency is:
η = (Q₁ - Q₂) / Q₁ = (T₁ - T₂) / T₁
Where Q₁ is is the amount of heat of the heater supplied to the working body and Q₂ is the amount of heat that the working body transfers to the refrigerator according to this T₁ is the temperature of the heater T₂ is the temperature of the refrigerator.
This formula provides a theoretical limit for the maximum value of the coefficient of efficiency of heat engines.
God is with you!!!
To find the speed you multiply the wavelength and the frequency together.
wavelength = 8mm =
m = 0.008 m
frequency = 14 Hz
speed = 0.008m * 14 Hz = 0.112 m/s
Answer:
Yes, the velocity of the object can reverse direction when its acceleration is constant. For example consider that the velocity of any object at any time t is given as: ... At At t = 0 sec, the magnitude of velocity is 2m/s and is moving in the forward direction i.e.v (t) = -2.
The correct choice is
b. the larger beaker of water contains more heat than the smaller beaker
Reason :
Heat is given as
Q = m c T
where Q = heat contained
m = mass of water
c = specific heat of water
T = change in temperature.
since the specific heat and temperature is same for both the beakers, we need to look at which beaker contains more amount of water. the larger beaker has more mass of water, hence heat contained in the larger beaker is greater.
