Which of the following statements is a consequence of the equation e = mc2?
a
energy is released when matter is destroyed.
b
mass and energy are equivalent.
c
the law of conservation of energy must be modified to state that mass and energy are conserved in any process.
d
all of the above

Use the empirical rule. the mean speed of a sample of vehicles along a stretch of highway is 70 miles per hour, with a standard deviation of 4 miles per hour. estimate the percent of vehicles whose speeds are between 66 miles per hour and 74 miles per hour. (assume the data set has a bell-shaped distribution.)

Abike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. what is her acceleration? select one: a. 3.21 m/sec2 b. 1.75 m/sec2 c. 9.80 m/sec2 d. 2.24 m/sec2

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?