A10 g bullet moving directly upward at 1000 m/s strikes and passes through the center of mass of a 5.00 kg block initially at rest. the bullet emerges from the block moving directly upward at 400 m/s. (a) to what maximum height does the block then rise above its initial position?
(b) what is the average force that the bullet exerts on the block if it takes the bullet 1.40 × 10^−4 s to travel through the block?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

Which missing item would complete this alpha decay reaction ? > 228/88ra + 4/2he a.224/96 rn b. 232/90 th c. 230/92 u d. 235/92 u

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?