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A pendulum is released from rest extended horizontally. The mass ofthe pendulum is 0.5 kg and the length of the string to the centerof mass is 75 cm. What is the speed of the pendulum bob as itpasses through the vertical. Use the work energy theorem.
Repeat the problem but this time use the conservation ofmechanical energy.
A two-slit pattern is viewed on a screen 1.06 m from the slits. compute the total width of the central bright fringe
A uniform solid disk of mass m = 3.05 kg and radius r = 0.200 m rotates about a fixed axis perpendicular to its face with angular frequency 5.97 rad/s. Calculate the magnitude of the angular momentum of the disk
The burning of gasoline in a car releasesabout 3.0 * 10^4 kcal/gal. what is the efficiency of the engine under those conditions
The force shown in the attached figure is the net eastward force acting on a ball. The force starts rising at t = 0.012 s, falls back to zero at t = 0.062 s, Find the area of a nearly equally sized triangle
A vector has an x component of -24.0 units and a y component of 36.4 units. Find the magnitude and direction of this vector
A velocity selector has an electric field of magnitude 2620 N/C,directed vertically upward, and a horizontal magnetic field that isdirected south. Charged particles, traveling east at a speed of6.75 x 103 m/s, enter the velocity selector and are ab..
A particle leaves the origin with an initial velocity=(3.76i)m/s and a constant acceleration =(-1.43i-2.69j) m/s^2. find velocity and position vector of particle
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 680m to be the other plate.
Describe the energy of a car driving up a hill. a. entirely kinetic b. entirely potential c. both kinetic and potential d. gravitational e. elastic Explain why
A stone is dropped from the top of the cliff. The splash it makes when striking the water below is heard 3.5 seconds after it is dropped. How high is the cliff? Presume that the speed of sound in air is 343 m/s and g = 9.8 m/s2.
A ceiling fan with 89 diameter blades is turning at 65. Presume the fan coasts to a stop 30 after being turned off. Throughout how many revolutions does the fan turn while stopping.
A playground merry-go-round has radius 2.50mand moment of inertia 2800kg?m2 about a vertical axle through its center, What is the average power supplied by the child
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