The resistance of a wire is 'r'. It is cut into four equal parts and all these parts are connected in parallel. What is the equivalent resistance of this combination?.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

What is the largest meteoroid that has collided with this planet

Calculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energycalculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energy