A1-lb block and a 100-lb block are placed side by side at the top of a frictionless hill. each is given a very light tap to begin their race to the bottom of the hill. in the absence of air resistance, what can you conclude about the outcome of the race?
a)the 1-lb block wins the race.
b)the 100-lb block wins the race.
c)the two blocks end in a tie.
d)there’s not enough information to determine which block wins the race

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)

An alarm clock has a current of 4.5 amps and a resistance of 3.2 ohms. what is the voltage in the circuit? a.1.4 volts b.0.71 volts c.14 volts d.46 volts

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign