Why does a patient receive more radiation from a CT scan than from having an X-ray image made?
A. Fewer X-rays are reflected in a CT scan
B. Higher-frequency rays are used in a CT scan
C. A CT scan involves multiple X-ray images
D. The X-rays are more powerful in a CT scan

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2