Advertisements
Advertisements
Question
In a calorimeter, the heat given by the hot object is assumed to be equal to the heat taken by the cold object. Does it mean that heat of the two objects taken together remains constant?
Advertisements
Solution
Yes, heat of the two objects taken together remains constant. If no heat is lost to the surroundings, the heat of the two bodies taken together actually remains conserved.
APPEARS IN
RELATED QUESTIONS
The kinetic energy per molecule of a gs at temperature T is ________.
(a) `(3/2)RT`
(b) `(3/2)K_BT`
(c) `(2/3) RT`
(d) `(3/2)("RT"/M)`
Why do marine animals live deep inside a lake when the surface of the lake freezes?
The temperature of water at the surface of a deep lake is 2°C. The temperature expected at the bottom is
A spinning wheel A is brought in contact with another wheel B, initially at rest. Because of the friction at contact, the second wheel also starts spinning. Which of the following energies of the wheel B increases?
(a) Kinetic
(b) Total
(c) Mechanical
(d) Internal
As the temperature is increased, the time period of a pendulum
A person's skin is more severely burnt when put in contact with 1 g of steam at 100°C than when put in contact with 1 g of water at 100°C. Explain
Should a thermometer bulb have large heat capacity or small heat capacity?
Heat and work are equivalent. This means, ____________ .
A steel rod of length 1 m rests on a smooth horizontal base. If it is heated from 0°C to 100°C, what is the longitudinal strain developed?
A steel wire of cross-sectional area 0.5 mm2 is held between two fixed supports. If the wire is just taut at 20°C, determine the tension when the temperature falls to 0°C. Coefficient of linear expansion of steel is 1.2 × 10–5 °C–1 and its Young's modulus is 2.0 × 10–11 Nm–2.
Answer the following question.
Clearly, state the difference between heat and temperature?
In hot summer after a bath, the body’s __________.
‘An object contains more heat’- is it a right statement? If not why?
Our normal body temperature is ______.
Two objects are said to be in thermal contact if they can exchange heat energy.
Heat is measured in Celsius or centigrade.
The average kinetic energy of molecules of a gas is directly related to which physical quantity?
When two bodies at different temperatures are placed in contact, heat flows from ______.
What is the dimensional formula of heat?
