Hospital x-ray generators emit x-rays with wavelength of about 15. 0 nanometers (nm), where 1nm=10−9m. What is the energy of a photon of the x-rays?.

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

the right answer is 0.3 meters per second