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A ball of mass 0.9 kilogram and attaching it to the top of the door. Alice notices it is swinging to-and-fro rising to a height of 0.5 meter (from the bottom of its arc) at each end of its swing. As she watches, the Frog-Footman suddenly places a rod 0.8 meter from the top directly under the attachment point.
Compute how high does the ball now rise on the side with the rod?
A 5.4kg object is suspended by a string from the ceiling of anelevator. The acceleration of gravity is 9.8m/s^2. Determine the tension in the string if it is accelerating upward at a rate of 3.8m/s^2.
A cannonball launched with an initial velocity of 131 m/s at an angle of 40° follows a parabolic path and hits a balloon at the top of its trajectory.
The length of a string of a pendulum is increased by a factor of9. By what factor has the period of the oscillation changed
The surface between a 12kg block , the 16kg wedge and between 16 kg wedge and the horizontal plane are smoothe, What is the force F which must be exerted on the 16 kg block in order that the 12 kg block
An inexpensive microscope has a tube length of 12.0cm , and its objective lens is labeled with a magnification of 10x. Calculate the focal length of the objective lens
When a 20 V emf is placed across two resistors in series, a current of 2.0A is present in all of the resistors. When the similar emf is places across the same two resistors in parallel , the current through the emf is a 10 A.
A uniform electric field exists in the region between two oppositely charged plane parallel plates. Find the magnitude of this electric field
Suppose your weight has been constant, but then - after being introduced to really good chocolate - you start eating 100 extra food calories (recall, 1 food calorie is really 1kcal or 1000 calories of energy) every day without otherwise adjusting ..
A solid sphere of mass 2.5 Kg and a radius .15m starts from rest at the top of the ramp inclined 15 degrees, and rolls to the bottom without slipping. What is the total kinetic energy of the sphere
A 65 man's arm, including the hand, can be modeled as a 76 -long uniform cylinder with a mass of 3.4. by how much does he raise his center of gravity?
1.collect 10 resources other than your textbook from popular science magazines including discover scientific american
A particle with a charge of q = -5.60 nC is moving in a uniform magnetic field of B= (-1.23 T) z. Calculate the x component of the velocity of the particle
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