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A 200 gram block on a 46 centimeter long string swings in a circle on a horizontal, frictionless table at 72 rpm.
(a) Determine what is the speed of the block?
m/s
(b) Determine what is the tension in the string?
N
A projectile of mass m is fired from the surface of the earth at an angle a from the vertical, where a = 0.75 radians. Calculate the maximum height that the projectile will reach
The archerfish hunts by dislodging an unsuspecting insect fromits resting place with a stream of water expelled from the fish'smouth. Suppose the archerfish squirts water with a speed of 1.9 m/sat an angle of 48.0° above the horizontal, and aims f..
A particle moves on the x axis under the influence of the force F = ?/x3. The initial position is x0, and the initial velocity is 0. [Data: mass = 1 kg; ? = 2 N m3; x0 = 3 m. ]
An LC circuit with L = 45 mH is used in a radio to decide the frequency of a selected radio station. The station's frequency is equal to the resonant frequency of the circuit.
The earth's magnetic field, like any magnetic field, stores energy. The maximum strength of the earth's field is about 7.0 10-5 T. Find the maximum magnetic energy stored in the space
Physics: Speed of car at bottom of driveway; initial speed of bullet, 20 A 2.10 x 10³ kg car starts from rest at the top of a 5.0 m long driveway that is sloped at 20° with the horizontal. If an average friction force of 4.0 x 10³ N impedes the mo..
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. What is the average net force (magnitude and direction) exerted on the ball by the cushion
Assume Rutherford used an alpha particle with a kinetic energy of 5.25MeV and fired them into a sheet of aluminum, one atom thick. Determine the minimum radius of approach
During each cycle, a refrigerator ejects 605 kJ of energy to a high-temperature reservoir, Determine the work done on the refrigerant in each cycle
A cart of mass 1.8kg rolls without friction on a track. At point A the cart is moving at 6.0m/s. What work was done by friction
A toy train rolls around a horizontal 1.5-m-diameter track. The coefficient of rolling friction is 0.13. What is the magnitude of the trains angular acceleration
Mainly telephone cables are made of copper wire of either 24 or 26 gauge. If the resistance of 24 gauge wire is 137Ω/mile and the resistance of 26 gauge wires is 220Ω/mile what is the ratio of the diameter of 24 gauge wires to that of 26 gauge wires?
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