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A weather vane originally at rest has a moment of inertia of 0.107 kg · m2 about its axis of rotation. A 28.5 g piece of clay is thrown at the vane and sticks to it at a point 23.0 cm from the axis. The initial velocity of the clay is 18.0 m/s, directed perpendicular to the vane. Discover the angular velocity of the weather vane now after it is struck. rad/s
An object initially at rest explodes and splits into 3 fragments. the first fragment flies off to the west, and the second fragment flies off to the south. what is the direction of the third fragment
A rifle is aimed horizontally at a target 47.0 away. The bullet hits the target 1.80 below the aim point. Evaluate the bullet's flight time? What was the bullet's speed as it left the barrel?
Some species use echolocation to determine the position and velocity of objects and prey. What is the sound frequency of the echo the bat hears
A possible spacecraft design uses a solar sail made of aluminized plastic. As sunlight reflects off the sail, radiation pressure drives the spacecraft outward away from the sun. what is its acceleration at the radius of the Earth's orbit
A car is designed to get its energy from a rotating flywheel with a radius of 2.25 m and a mass of 550 kg. The flywheel can be considered as a uniform thin cylinder. Before a trip, the flywheel is attached to an electric motor, which brings the flywh..
A river 101.8 m wide flows toward the south at 31.0 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. What is her velocity relative to land
Eight uncharged capacitors with equal capacitances are combined in series. The combination is connected to a 6.53-V battery, Find the capacitance of each capacitor
a force of 4.00 times 10-2 n is needed to move a charge of 63.0 microc a distance of 16.0 cm in the direction of a
You are pulling a suitcase through an airport at a constant speed. The handle of the suitcase makes an angle of 60 degrees with respect to the horizontal direction, what is the contact force due to the floor acting on the suitcase
Rubber stopper attached to one end of the string and 100 g mass attached to the other end. A student gets the rubber stopper going in a horizontal circle above her head.
A rod of length 0.850 m is attached to a pivot at one end. A force F of 2.30 N is applied to the end of the bar opposite the pivot. The force makes an angle of 65.0o with the bar. (The ? in the figure is the angle for the "line of action" of the f..
What is the force of air resistance. how high was the jump.
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