A satellite orbits Earth. The only force on the satellite is the gravitational force exerted by Earth. How does the satellite’s acceleration compare to the gravitational field at the location of the satellite?A. The gravitational field strength is unrelated to the acceleration.
B. The gravitational field strength is smaller than the acceleration.
C. The gravitational field and the acceleration point in the same direction.
D. The magnitudes of the acceleration and the gravitational field strength are equal.

What is the temperature in degrees celsius of a substance with a tempature of 49k

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?