2075 Set A Q. No. 106 A Carnot engine has 40% efficiency with a sink at 10°C. By how many degrees should the temperature of the source be increased in order to raise the efficiency to 65%?​

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

What kind of simple machine is a catapult?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.