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The heat engines A and B have their sources at 327°C and 227°C and sinks at 127°C and 27°C The ratio of their efficiency is....
The correct answer is:
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The air escaping from an inflated tyre is cooled because it is an ..........
The air escaping from an inflated tyre is cooled because it is an ..........
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It is impossible to convert total heat into work This is the statement of ... of thermodynamics.
It is impossible to convert total heat into work This is the statement of ... of thermodynamics.
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Two blocks shown in the figure are connected by a heavy uniform rope of mass 4 kg. An upward force of 200 N is applied as shown. Find the acceleration of the system.
Two blocks shown in the figure are connected by a heavy uniform rope of mass 4 kg. An upward force of 200 N is applied as shown. Find the acceleration of the system.
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A uniform rope of length 5 m is on a smooth horizontal surface. It is being pulled by a horizontal force 20 N at one end. The ratio of tension at a distance of 2m from force end to tension at a distance of 2m from force free end is
A uniform rope of length 5 m is on a smooth horizontal surface. It is being pulled by a horizontal force 20 N at one end. The ratio of tension at a distance of 2m from force end to tension at a distance of 2m from force free end is
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Two blocks of masses 1kg and 2kg are connected by a string AB of mass ‘1kg’. The blocks are placed on a smooth horizontal surface. Block of mass 1kg is pulled by a horizontal force F of magnitude 8N. Find the tension in the string at points A and B.
Two blocks of masses 1kg and 2kg are connected by a string AB of mass ‘1kg’. The blocks are placed on a smooth horizontal surface. Block of mass 1kg is pulled by a horizontal force F of magnitude 8N. Find the tension in the string at points A and B.
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A block of mass ‘m’ is pulled by a uniform chain of mass ‘m’ tied to it by applying a force F at the other end of the chain. The tension at a point which is at a distance of quarter of the length of the chain from the free end will be...
A block of mass ‘m’ is pulled by a uniform chain of mass ‘m’ tied to it by applying a force F at the other end of the chain. The tension at a point which is at a distance of quarter of the length of the chain from the free end will be...
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Physics-
The block is placed on a frictionless surface in gravity free space. A heavy string of mass m is connected and force F is applied on the string. Then the tension between block and rope is....
The block is placed on a frictionless surface in gravity free space. A heavy string of mass m is connected and force F is applied on the string. Then the tension between block and rope is....
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Physics-
Two blocks A and B of same mass m attached with a light string are suspended by a spring as shown in the figure. The acceleration of block A and B just after the spring is cut.
Two blocks A and B of same mass m attached with a light string are suspended by a spring as shown in the figure. The acceleration of block A and B just after the spring is cut.
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Physics-
Two blocks are connected by a spring of natural length 2m, the force constant of spring is 200 Find the spring force when A is kept at rest and B is displaced by 1m to right
Two blocks are connected by a spring of natural length 2m, the force constant of spring is 200 Find the spring force when A is kept at rest and B is displaced by 1m to right
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A block of mass 20kg suspended through light spring balances as shown in the figure. The readings in spring balances 1 and 2 respectively are.
A block of mass 20kg suspended through light spring balances as shown in the figure. The readings in spring balances 1 and 2 respectively are.
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Physics-
Two blocks A and B of same mass m attached with a light spring are suspended by a string as shown in the figure. Find the acceleration of blocks A and B just after the string cuts.
Two blocks A and B of same mass m attached with a light spring are suspended by a string as shown in the figure. Find the acceleration of blocks A and B just after the string cuts.
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Physics-
Find acceleration of 3kg mass when acceleration of mass 2kg is in the given situation. [H.W]
Find acceleration of 3kg mass when acceleration of mass 2kg is in the given situation. [H.W]
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Physics-
A block of weight w is placed on a wedge and arranged as shown in figure Find the force needed to hold the cart in equilibrium if there is no friction.
A block of weight w is placed on a wedge and arranged as shown in figure Find the force needed to hold the cart in equilibrium if there is no friction.
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Physics-
The minimum force 'p' to be applied on a string so that a block of mass m just begins to move up on a friction less plane is
The minimum force 'p' to be applied on a string so that a block of mass m just begins to move up on a friction less plane is
Physics-General
Physics-
Find the reading on a weighing machine, given mass of box 15kg, mass of the block 40kg, mass of man 40 kg and weighing machine mass 5kg
Find the reading on a weighing machine, given mass of box 15kg, mass of the block 40kg, mass of man 40 kg and weighing machine mass 5kg
Physics-General
