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A cannon tilted up at a 25 degree angle fires a cannon ball at 81.0m/s from atop a 18.0m -high fortress wall.
What is the ball's impact speed on the ground below?
The electric field points radially outward at all points within the sphere (and outside too, for that matter). What is the strength of the electric field at a distance r from the center, inside sphere.
How much would an 80.0kg person weigh) on mars where an acceleration of gravity is 3.93m/s^2 and (b) on earth's moon where the acceleration of gravity is 1.63m/s^2.
determine the minimum magnetic field.
A student on a piano stool rotates freely with an angular speed of 3.10 rev/s. The student holds a 1.40-kg mass in each outstretched arm, 0.759 m from the axis of rotation, Calculate the initial and final kinetic energy of the system
A 563 Hz sound wave travels through a substance. The wavelength of the sound wave is measured to be 2.9 meters
A seasoned mini golfer is trying to make par on a tricky hole #5, at what speed must the golfer hit the ball to land the ball in the hole
Explain how Karl lifed th cement. How much time would it take for the police officer to catch the speeder, assuming that the speeder maintains a sonstant speed? How fast will the police officer be traveling at this time.
An object with a charge of 0.980 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
an electron microscope accelerates an electron (mass of electron is 9.11x10^-31 kg) from rest to 2.8 x 10^7 m/s in a distance of 2.80 cm, what is the average force on the electron
Six pendulums of mass and length are released from rest at the similar angle from vertical. Rank the pendulums according to the number of complete cycles of motion each pendulum goes through per minute.
The altitude of a hang glider is increasing at a rate of 6.80 m/s. At the same time, the shadow of the glider moves along the ground at a speed of 15.5 m/s when the sun is directly overhead. Calculate the magnitude of the glider’s velocity.
school yard teeter-totter with a total length of 5.50 and a mass of 36.00 is pivoted at its center. A 19 child sits on one end of the teeter-totter. Where should a parent push vertically downward with a force of 250 in order to hold the teeter-tot..
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