An 80 kg hunter gets a rope around a 400 kg
polar bear. they are stationary and on frictionless level ice, initially 60 m apart.

when the hunter pulls the polar bear to
him, the polar bear will move:

An object has a weight of 500 on earth what is the mass of this object

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

Which one of the following research methods can show cause and effect