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A 72 kilogram water skier is being accelerated by a ski boat on a flat lake. The coefficient of kinetic friction between the water surface and the skier's skis is .25.
(a) Find the skier acceleration if the rope pulling the skier behind the boat applies a horizontal tension force of magnitude of 240 Newton to the skier.
(b) Find the skier horizontal acceleration if the rope pulling the skier exerts a force of 240 Newton on the skier at an upward angle of 12 degree.
(c) Describe why the skier's acceleration in part (b) is greater than that in part (a)
In an eclipsing spectroscopic binary system, the maximum radial velocities for the two components are 20 and 5 km/s. The orbit is circular, and the orbital period is 5 years. It takes .3 days from the start of the eclipse to the main minimum, whic..
You are standing at x = 8.5 km. Lightning bolt 1 at x=0 km and lightning bolt 2 at x = 13.0 km. Both flashes reach your eye at the same time. what is the time difference between the two flashes
Illustrate what is the time it takes for the bullet to hit the ground, how far down range does the bullet travel, and what is the resultant velocity (in m/s) and final angle?
an electric field of intensity 3.0 knc is applied along the x-axis. calculate the electric flux through a rectangular
Assume that we suddenly discovered that all these years we would be wrong about the distance from Earth to the Sun, and it is actually 10 percent greater than we would think. How would that affect our approximation of the distance to the Andromeda..
A three-step cycle is undergone by 3.4 mol of an ideal diatomic gas: the temperature of the gas is increased from 210 K to 400 K at constanr volume, What is the efficiency of the cycle
A converging (lens f=+12cm) in contact with a diverging lens gives a combined focal length of +36 cm, calculate the focal length of the diverging lens
A 1.0 kg mass is connected to a spring with a spring constant of 9.00 N/m. find the maximum spring potential energy of the simple harmonic motion
A certain freely falling object, released from rest, requires 1.35 s to travel the last 24.0 m before it hits the ground. Find the total distance the object travels during the fall
At a certain instant a ball passes location m. In the next 4 seconds, the ball's average velocity is m/s. At the end of this 4 second time interval, what is the height y of the ball?
A 2500-kg sport utility vehicle travelling at 92 km/h can be stopped in 0.25 s if it hits a concrete wall. Assume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash, and..
A block is pushed up a frictionless incline by an applied horizontal force of 20 Newton. Find the magnitude of the resulting acceleration of the block
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