A camera lens produces a sharp image of a Distant object on the camera film when the lens is 2 cm from the film. how far must the lens be moved in order to photograph an object 50cm from the lens? A. 0.08cm away from the film
B. 4.5 cm away from the film
C. 0.08 cm nearer to the film
D. 0.06cm nearer to the film
E. 32cm away from the film​

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?