The train traveled from the station to the mall, a distance of 576 km in 6 hours. The train is only allowed to travel at a maximum speed of 90 km/h. Did the train break the speed limit?

Why is metal often used for cooking pan?

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?

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.