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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)
The scalar product of vectors and is +51.0. Vector has magnitude 9.00 and direction 28.0 west of south. If vector has direction 36.0 south of east, what is the magnitude of.
a block of mass 5.0 kg is pulled across a horizontal surface at a constant speed by a force 14 n directed at 35 degrees
A 9.00 kg sign hangs unevenly between 2 beams. On the right hand side, the angle between the horizontal and the cable is 16.0 degrees. Find the tension in the left side cable
A(n) 331 g object is attached to a spring and executes simple harmonic motion with a period of 0.294 s. The total energy of the system is 1.7J. Find the force constant of the spring. (N/m) Find the amplitude of the motion (in cm)
Two identical cars (m = 1350 kg) are traveling at the same speed of 26.9 m/s. compute the magnitude of the total momentum of the two cars
A balloon containing 2.0 m^3 of hydrogen gas rises from a location at which the temperature is 22 degrees Celsius, what is the new volume of the balloon
A resistor of 331 ohms is connected in series with a capacitor of 54.0 µF capacitance. what is the phase shift between the current and the voltage
The space shuttle is in a 400km - high circular orbit. It needs to reach a 700 km -high circular orbit to catch the Hubble Space Telescope for repairs. how much energy is required to boost it to the new orbit
A hot dog cooker heats hot dogs by connecting them to 120 V household electricity. A typical hot dog has a mass of 50g and a resistance of 130ohm . How long will it take for the cooker to raise the temperature of the hot dog from 20c to 80c ? The ..
A 1600kg car takes a 50-m-radius unbanked curve at 17m/s, What is the size of the friction force on the car
When the Voyager I and Voyager II spacecraft were exploring the outer planets, NASA flight controllers had to plan the crafts' moves well in advance.How many seconds elapse between the time a command is sent from Earth and the time the command is ..
A point charge of -12 micro-coulombs is fired directly towards a single infinite sheet of charge. It is initially moving at 3.4 m/s towards the sheet and after it has traveled 0.7 meters it is moving at 18.4 m/s.
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