A particle moving in the x-direction has 4-velocity u = (√5, 2,0,0). a. Compute the norm squared of this 4-velocity.
b. Derive the value of the speed V = dx/dt of the particle in the frame in which the components of u have been specified.
c. What is the mass m of the particle if it has energy E = 2mo, where mo is some mass unit?

think its the third option

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope 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