English
Karnataka Board PUCPUC Science Class 11

Explain Why Air Pressure in a Car Tyre Increases During Driving.

Advertisements
Advertisements

Question

Explain why Air pressure in a car tyre increases during driving.

Advertisements

Solution 1

When a car is in motion, the air temperature inside the car increases because of the motion of the air molecules. According to Charles’ law, the temperature is directly proportional to pressure. Hence, if the temperature inside a tyre increases, then the air pressure in it will also increase.

shaalaa.com

Solution 2

When car is driven, some work is being done on types in order to overcome dissipative forces of friction and air resistance etc. This work done is transformed into heat, due to which temperature of the car types increases.

shaalaa.com
  Is there an error in this question or solution?
Chapter 11: Thermodynamics - Exercises [Page 316]

APPEARS IN

NCERT Physics Part 1 and 2 [English] Class 11
Chapter 11 Thermodynamics
Exercises | Q 3.3 | Page 316

RELATED QUESTIONS

When we rub our hands they become warm. Have we supplied heat to the hands?


Can work be done by a system without changing its volume?


Refer to figure. Let ∆U1 and ∆U2 be the changes in internal energy of the system in the process A and B. Then _____________ .


Consider the process on a system shown in figure. During the process, the work done by the system ______________ .


An ideal gas goes from the state i to the state f as shown in figure. The work done by the gas during the process ______________ .


A gas is contained in a metallic cylinder fitted with a piston. The piston is suddenly moved in to compress the gas and is maintained at this position. As time passes the pressure of the gas in the cylinder ______________ .


Figure shows three paths through which a gas can be taken from the state A to the state B. Calculate the work done by the gas in each of the three paths.


A substance is taken through the process abc as shown in figure. If the internal energy of the substance increases by 5000 J and a heat of 2625 cal is given to the system, calculate the value of J.


What is the internal energy of the system, when the amount of heat Q is added to the system and the system does not do any work during the process?


Explain given cases related to energy transfer between the system and surrounding –

  1. energy transferred (Q) > 0
  2. energy transferred (Q) < 0
  3. energy transferred (Q) = 0 

In a thermodynamic system, working substance is ideal gas. Its internal energy is in the form of ______.


8 m3 of a gas is heated at the pressure 105 N/m2 until its volume increases by 10%. Then, the external work done by the gas is ____________.


Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following:

What is the change in internal energy of the gas?


Figure shows the P-V diagram of an ideal gas undergoing a change of state from A to B. Four different parts I, II, III and IV as shown in the figure may lead to the same change of state.

  1. Change in internal energy is same in IV and III cases, but not in I and II.
  2. Change in internal energy is same in all the four cases.
  3. Work done is maximum in case I
  4. Work done is minimum in case II.

A person of mass 60 kg wants to lose 5kg by going up and down a 10 m high stairs. Assume he burns twice as much fat while going up than coming down. If 1 kg of fat is burnt on expending 7000 kilo calories, how many times must he go up and down to reduce his weight by 5 kg?


In thermodynamics, heat and work are ______.


The internal energy of one mole of argon is ______.


The molar specific heat of He at constant volume is 12.47 J/mol.K. Two moles of He are heated at constant pressure. So the rise in temperature is 10 K. Find the increase in internal energy of the gas.


A steam engine delivers 4.8 x 108 Jof work per minute and services 1.2 x 109 J of heat per minute from its boiler. What is the percentage efficiency of the engine?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×