How much work must be done on a particle with a mass of m to accelerate it from a speed of 0.900c to a speed 0.990 c ? (Express the answer in terms of mc2.)

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

their crystal patterns have been disrupted by stress

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

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.