Physics A single fixed pulley is used to draw water from a well because Force is applied in a convenient direction Mechanical advantage is high Velocity ratio is low Efficiency is 100% Force is applied in a convenient direction Mechanical advantage is high Velocity ratio is low Efficiency is 100% ANSWER DOWNLOAD EXAMIANS APP
Physics If ice floating on water in a vessel melts, the water level in the vessel ________ . Decreases Increases Does not change First increases before decreasing Decreases Increases Does not change First increases before decreasing ANSWER DOWNLOAD EXAMIANS APP
Physics A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will Remain unaffected Have its shape changed Increase Decrease Remain unaffected Have its shape changed Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following circuit elements is used to ''block" DC in an electronic circuit ? Diode Resistances Inductance Capacitance Diode Resistances Inductance Capacitance ANSWER DOWNLOAD EXAMIANS APP
Physics What is the unit of the physical quantity Entropy? Joule per kelvin Newton per kelvin Watt per kelvin Pascal per kelvin Joule per kelvin Newton per kelvin Watt per kelvin Pascal per kelvin ANSWER DOWNLOAD EXAMIANS APP
Physics The velocity of sound in moist air is more than in dry air because the moist air has More pressure than dry air. Less density than dry air. More density than dry air. Less pressure than dry air. More pressure than dry air. Less density than dry air. More density than dry air. Less pressure than dry air. ANSWER DOWNLOAD EXAMIANS APP
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