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A 0.500 kilogram football is thrown toward the east with a speed of 10.0 m/s. A stationary receiver catches the ball and brings it to rest in 0.020 second. (Take the initial direction of motion to be the positive direction.)
(a) Find the impulse delivered to the ball as its caught?
kg•m/s
(b) Find the average force exerted on the receiver?
N
A rope is wrapped around a wheel of diameter 50 centimeter. The wheel is mounted with frictionless bearings on an axle through its center. Calculate the linear acceleration of the falling block
A sphere consists of a solid wooden ball of uniform density 800 and radius 0.20 and is covered with a thin coating of lead foil with area density 20.
A person on earth notices a rocket approaching from the right at a speed of 0.82c and another rocket approaching from the left at 0.63c. What is the relative speed among the two rockets, as measured with a passenger on one of them?
How much time is necessary to catch the car
Ball bearings are made by letting spherical drops of molten metal fall inside a tall tower -- called a shot tower -- and solidify as they fall. If a bearing needs 3.1 s to solidify enough for impact, how high must the tower be
Two point charges have a total charge magnitude of 576 µC. When placed 1.19 m apart, the force each exerts on the other is 20.2 N and is repulsive. What is the charge magnitude on each? Please include solution.
What fraction of the original kinetic energy of puck dissipates during the collision, kinetic friction before is 40 m/s, kinetic friction after is 29.3 m/s
A loop of wire (resistance = 2.0 m?) is positioned as shown with respect to a long wire which carries a current. If d = 1.0 cm, D = 6.0 cm, and L = 1.5 m, what current is induced in the loop at an instant when the current in the wire is increasing at..
A train moving at a constant speed of 66.0 km/h moves east for 43.0 min, then in a direction 56.0° east of due north for 16.0 min, find the average velocity of the train during this run
Estimate the electric field at a point 2.40 cm perpendicular to the midpoint of a uniformly charged 2 m-long thin wire carrying a total charge of 4.10 microC.
Find the x and y components and the magnitude and direction of the electric field at the following points. Find the x and y components and the magnitude of the electric field at the origin.
Electricity and process heat requirements of a manufacturing facility are to be met by a cogeneration plant consisting of a gas turbine and a heat exchanger for steam production.
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