The world speed record on water was set on october
18,1978 by ken warby. if ken drove his motorboat a
distance of 1500m in 3,1023, how fast was his boat
moving in meters per second and kilometers per hour?

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.

Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?

Compare the patterns of the two waves shown in the image. which statement is true about these waves?