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If the period of oscillation of an astronaut on a 3000-N/mspring is 1.0 s, what is the astronaut's mass?
Two equal masses oscillate on light springs, the second with aspring constant twice that of the first. Which system will have thegreater frequency and how much greater?
A boat with speed of 10m/s, in still water, tries to cross a river with a current flow of 2.0m/s, and is 100m wide. how far down river does it land
ships a and b leave port together. for the next two hours ship a travels at 15.0 mph in a direction 35.0 west of north
a body is attached to one end of a horizontal spring that is fixed at its other end. due to the spring the body
A 23-g lead bullet is shot with a speed of 320 m/s into a wooden wall. Assuming that 60% of the kinetic energy is absorbed by the bullet as heat (and 40% by the wall), what is the final temperature of the bullet
A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.6 m/s,hoping to land on the roof of an adjacent building. Air resistanceis negligible. The horizontal distance between the two buildings isD, and the roof of t..
The total momentum of a closed system is observed to be975 kg·m/s east. The systemconsists of 12 objects that are observed to be colliding with each other. After 28.5 min and 6124 collisions,what is the total momentum of the system?
The position of a particle is given by x = 4.4 cos pt, where x is in meters and t is in seconds. Find the speed and acceleration of the particle when x = 2.3 m
If an astronaut dropped a small rock near the surface of Neptune, how far (in m) would the rock fall in 1.5 s
the weight of the block on the table is 454 n and that of the hanging block is 205 n. ignore all frictional effects and
A runner is running the first heat of a100 m race at a velocity of 6.9 m/s in an easterly direction. What is the relative velocity of the runner to the wind
A basketball player makes a jump shot. The 0.650-kg ball is released at a height of 1.90 m above the floor with a speed of 7.17 m/s, What is the work done on the ball by air resistance, a nonconservative force
A 2.30-MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. Calculate the speed of the fetal heart wall at the instant this measurement is made
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