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A thin rod of length 0.75 m and mass 0.40 kg is suspended freely from one end. It is pulled to one side and then allowed to swing like a pendulum, passing through its lowest position with angular speed 4.6 rad/s. Neglect friction and air resistance. (a) Find the rod's kinetic energy at its lowest position (in Joules) (b) Find how far above that position the center of mass rises. (in meters)
A square plate of copper with 35.0-cm sides has no net charge and is placed in a region of uniform electric field of 60.0 kN/C directed perpendicularly to the plate. find the total charge on the positive face of the plate
A small rock with mass 0.12 is fastened to a massless string with length 0.80 to form a pendulum. The pendulum is swinging so as to make a maximum angle of 45 with the vertical. Air resistance is negligible.
an electric dipole consists of charges e and -e separated by 0.40 nm. it is in an electric field of strength 2.50 x 106
A woman walks 300m in the direction 30° east of north, then 300 m directly east.
An 11.70 kg weather rocket generates a thrust of 240 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring steady is 470 N/m, is anchored to the ground.
q1. assuming that the maximum amplitude of the field at point o for the wave from midway between the slits is er now
a 35 microc charge is placed 60 cm from an identical 35 microc charge. how much work would be required to move a 0.72
An outfielder in baseball throws a baseball from the warning track toward homeplate with a speed of 111.83 125 ft/s at an angle of 40.1640 degrees. where does the ball land relative to homeplate
A car chases a coyote down a road ending in a sheer cliff. The car has a speed of 40 m/s and the coyote has a speed of 30 m/s. What beat frequencies do each the coyote and the driver hear
An 850g- iron block is heated to 370C and placed in an insulated container (of negligible heat capacity) containing 41.0g of water at 23.0C a).What is the equilibrium temperature of this system? The average specific heat of iron over this temperat..
A popular pastime is to see who can push an object closest to the edge of a table without its going off. what was the object's speed as you released it
A person with a black belt in karate has a fist that has a mass of 0.70 kg. What is the magnitude of the average net force
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