How did astronomers use technology to identify characteristics of the Crab nebula?How did astronomers use technology to identify characteristics of the Crab nebula?

After an atomic bomb has been dropped, the damage continues to get worse. why is this?

The velocity of car is 80.0 miles per hour. what is the velocity of car in meters per second? (1 km -0.621 miles) m/s

2. -/1 pointsserpse10 2.7.p.017.mi. an object moving with uniform acceleration has a velocity of 14.0 cm/s in the positive x direction when its x coordinate is 2.97 cm. if its x coordinate 2.85 s later is -5.00 cm, what is its acceleration? cm/s2 need ? read it master it