Gamma rays are sometimes used to detect flaws in metal structures such as bridges. Why are gamma rays more useful for this application than x-rays? O A. Gamma rays have a shorter wavelengths so they able to penetrate metal objects.
O B. Gamma rays have a lower frequencies so they able to penetrate metal objects.
OC. Metal objects absorb gamma radiation but they are not affected by X-rays.
OD. Metal objects reflect gamma radiation but they allow X-rays to pass through.

Contrast the force of gravity between these pairs of objects a 1 kg mass and a 2 kg mass that are 1 m apart and two 2 kg masses that are 1 m apart

Write a polynomial function with the given zeros x= -1,0,2show your work

You have been hired to design a spring-launched roller coaster thatwill carry two passengers per car. the car goes up a 10-m highhill, then descends 15m to the track's lowest point. you'vedetermined that the spring can be compressed a maximum o 2.0m andthat a loaded car will have a maximum mass of 400kg. for safetyreasons, the spring constant should be 10% larger than the minimumneeded for the car to just make it over the top. a) what spring constant (k) should you specify ? b) what is the maximum speed of a 350 kg car if the spring iscompressed the full amount.