By looking closely at how stars and galaxies are moving away from other, what have astronomers been able to calculate

a. the age of the universe only

b. the rate at which the universe is expanding only

c. the age of the universe and the rate at which the universe is expanding

The mini-refrigerator fire was most likely caused by what type of wiring?

For this car, predict the shape of a graph that shows distance (x) versus time (t). note that time is the independent variable and will be on the bottom axis. need asap

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?