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Two masses are connected as in the figure, where ?=40.0°, m1=13 kg and the coefficient of kinetic friction between the m2=7 kg object and the plane is ?k=0.25.
A) Find the magnitude of the frictional force acted on m2?
B) Find the acceleration reached by the objects?
An 86kg man drops from rest on a diving board 3.0m above the surface of the water and comes to rest 0.55s after reaching water. What is the net force on the diver as he is brought to rest.
Example of either positive freedom negative freedom (N). Indicate which each is by circling the Be able to explain your choice.
At rest, a car's horn sounds at a frequency of 480 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 470 Hz. What is the speed of the car?
A car is driving directly north on the freeway at a speed of 100 km/h and a truck is leaving the freeway driving 79 km/h in a direction that is 33 degrees west of north. What is the magnitude and direction of the truck
A sphere of mass 10.0 kg and radius 0.45 m is subject to an angular acceleration about its center of 2.00 rad/s2. What are the final respective rotational kinetic energies, assuming both the objects began at rest
If Galileo dropped a 2.37 kg cannon ball from the 58.5m Tower of Pisa, how much work did gravity do on the ball
A spaceship moving away from the Earth at a velocity v1 = .75c with respect tot he Earth, What is the velocity of the rocket with respect to the Earth
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.0919 N when their center-to-center separation is 52.3 cm. find the positive charge in coulombs on the other
A square loop of wire surrounds a solenoid. The side of the square is 0.1 m, while the radius of the solenoid is 0.025 m. What is the current flowing in the square loop
In order to study the long-term effects of weightlessness, astronauts in space must be weighed (or at least "massed"). Find the mass of the astronaut
A guitar string with a mass of 10.0 g is 1.00 m long and attached to the guitar at two points separated by 61.6 cm. find the frequency of the replacement string's first harmonic
A mass of 0.32 kg, attached to a spring with a spring constant of 73.0 N/m, is set into simple harmonic motion. What is the magnitude of the acceleration of the mass
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