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Assume two clowns on skateboards are standing motionless on a smooth surface 10.0 m apart. Clown B tosses a 5.0 kg medicine ball to clown A. The medicine ball is traveling with a speed of 7.5m/s.
a) What is the resulting velocity of clown B after throwing the ball?
b) If clown B applied a constant force for 0.5 seconds when tossing the ball, what is the magnitude of the force?
A Carnot engine extracts 850 J from a 600 K reservoir during each cycle and rejects 450 J to a cooler reservoir. Find the temperature of the cool reservoir
The surface area of an unclothed person is 1.55 m2, and his skin temperature is 33.0°C. At what rate is energy radiated by the body
A 100 arrow is shot perpendicularly from a bow whose effective spring constant is 500. If the bow is drawn 75 before shooting the arrow, to what height does arrow rise.
explain the shape of the distribution of sample means.
q1. a 75-kg person sits on a 3.7-kg chair. each leg of the chair makes contact with the floor in a circle that is 1.5
Calculate the centripetal force on the motorcycle.
You throw a 25.0 rock into the air from ground level and observe that, when it is 12.0 high, it is traveling upward at 17.0, Use the work-energy principle to find the rock's speed just as it left the ground
A 11.1-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 10.3 m/s, determine the following. (a) the translational kinetic energy of its center of gravity ____J (b) the rotational kinetic en..
A wheel is rotating freely at angular speed 490 rev/min on a shaft whose rotational inertia is negligible. A second wheel, initially at rest and with 5 times the rotational inertia of the first, is suddenly coupled to the same shaft. (a) What is the ..
a 122 cm length of string has a mass of 1.70 g. it is stretched with a tension of 6.60 n between fixed supports. what
A horizontal light ray is incident on a crown glass prism as shown in the figure below where ? = 42.5°. Find the angle of deviation ? of the ray-the angle
A 280-kg cylindrical piece of concrete pipe 1.0 m in diameter, 1.3 m long, and 3 cm thick is rolling toward you at a speed of 5 m/s. What is its approximate rotational angular momentum
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