If a photon has a frequency of 5.20 x 10^14 hertz, what is the energy of the photon?

Given : Planck's constant is 6.63 x 10^-34 joule-seconds.

An Iron weight, suspended by a string, is motionless. The tension in the string is 4,75 newtons What is the mass of the iron weight? A 0.485 kilograms 4.75 kilograms C 9.65 kilograms OD 10.0 kilograms 15,5 kilograms

The ability of an apple to change color when exposed to air is chemical or physical

How long does it take for light from a star that is 8 light-years away to reach earth? A. 8 earth minutes B. 16 earth minutes C. 8 earth years D. 16 earth years

3 A jet plane accelerated along a straight runway from rest to a speed of 140m's in 50s when it took off. Calculate its change of velocity and its acceleration

A soccer player runs with a speed of 4.6m/s how long does it take him to run 60m

Why is it easier to read black text on a white background than to read green text of any light color?

If object A has more mass than object B, does object A contain more matter? Explain.

Describe a beach that was near stormy seas and powerful waves

We all depend on electricity. Most electricity is created by electromagnetic generators at large power plants and distributed through an electric grid.

A rock with mass m = 4.00 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 17.