To iron bodies, one lighter and another heavier, kept initially at same temperature, are heated to the same final temperature. Then – Both the bodies will take same heat/ heavier body will take more heat/ lighter body will take more heat/ it can not be said which body would take more heat

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc