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A small 0.280-kg object moves on a frictionless horizontal table in a circular path of radius 4.30 m. The angular speed is 8.02 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the circle. Someone under the table begins to pull the string downward to make the circle smaller. If the string will tolerate a tension of no more than 132 N, what is the radius of the smallest possible circle on which the object can move?
Suppose you point a pinhole camera at a 15-m-tall tree that is 75m away. If the film is 22cm behind the pinhold, what will be the size of the tree's image on the film
A sanding disk with rotational inertia 8.1 x 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of magnitude 20N·m about central axis of the disk. About that axis and with torque applied for 29 ms, what is the magnitude of (..
A solid sphere rolls without slipping or sliding along a horizontal surface toward an incline. Calculate the kinetic energy of sphere as it rolls along the horizontal surface
In lab, your instructor generates a standing wave using a thin string of length L = 2.10m fixed at both ends. What is the maximum transverse speed vy of the bead
Find the von Mises stress (in MPa) at the location of the strain gages.
Current & magnetic induction in the electrical circuits.
Find the electric field at the position of the electron. What is the potential difference in volts between the plates.
What are direction and magnitude of total velocity
A nonconducting solid sphere of radius R has a volume charge density that is proportional to the distance from the center. That is, ? = Ar for r R, where A is a constant. (Use the following as necessary: 0, A, r, and R, as necessary.)
A radio station broadcasts with a power of 50,000 watts. Estimate the average intensity of the wave at a distance of 50 km from the radio transmitting antenna
Charge Q = 10E-8 C is placed in the origin. Location A is -3.00m from the charge while location B is 2.00m from the charge.A) Find the potential difference VB - VA between the two points. B) Which point is at the higher potential? Type either "Poi..
A 52.1-kg high-school student hangs from an overhead bar with both hands, What is the tension in each arm when the arms make an angle of 31.00 o with respect to the vertical
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