Physics Which best describes how air moves during convection? Air always falls down Warm air falls down Cool air falls down Cool air is replaced by warm air Air always falls down Warm air falls down Cool air falls down Cool air is replaced by warm air ANSWER DOWNLOAD EXAMIANS APP
Physics If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is Acceleration due to gravity at the bottom of the vessel Height of the liquid column Surface area of the bottom of the vessel Density of the liquid Acceleration due to gravity at the bottom of the vessel Height of the liquid column Surface area of the bottom of the vessel Density of the liquid ANSWER DOWNLOAD EXAMIANS APP
Physics Electric current is measured by which instrument? Barometer Ammeter Voltmeter Sinometer Barometer Ammeter Voltmeter Sinometer ANSWER DOWNLOAD EXAMIANS APP
Physics A body of 4.0 kg is lying at rest. Under the action of a constant force, it gains a speed of 5 m/s. The work done by the force will be ________ 40 J 50 J 20 J 30 J 40 J 50 J 20 J 30 J ANSWER DOWNLOAD EXAMIANS APP
Physics An ice block with a piece of lead embeded in it floats in water. If ice melts the water level Falls Remains same Rises Falls first and then rises Falls Remains same Rises Falls first and then rises ANSWER DOWNLOAD EXAMIANS APP
Physics A cyclist leans inwards when he is negotiating a curve so that He may increase his speed No frictional force may be produced between the wheels and the axle His weight may be reduced Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion. He may increase his speed No frictional force may be produced between the wheels and the axle His weight may be reduced Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion. ANSWER DOWNLOAD EXAMIANS APP
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