Aperfectly flexible cable has length l, and initially it is at rest with a length xo of it hanging over the table edge. neglecting friction, compute the length hanging over the table edge after an elapsed time t, assuming cable sections remain straight during the subsequent motion.

Abaseball picther can throw a ball at about 90 miles per hour, v = 40 m/s, on solid rock ground. we now put him into space. when he throws the ball, which weighs mb = 0.15 kg moves away from himat the same speed. how long does it take the ball thrown in space to travel the 30 meters to the batter? he weighs mp = 100kg

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

Write the correct abbreviation for each metric unit