A airplane diving at angle of 37° with the horizontal drops a mail bag at an altitude of 730 m. The projectile hits the ground 5.0 s after being released. What is the speed of the air craft? ​

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.

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Properties seen when one one substance changes to another are known as properties