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Two touching bars 1 and 2 are placed on an inclined plane forming an angle a with the horizontal (Fig). The masses of the bars are equal to m1 and m2, and the coefficients of friction between the inclined plane and these bars are equal to k1 and k2 respectively, with k1 > k2. Find:
(a) The force of interaction of the bars in the process of motion;
(b) The minimum value of the angle a at which the bars start sliding down.
A peregrine falcon in a tight, circular turn can attain a centripetal acceleration 1.61 times the free-fall acceleration. what is the radius of the turn
The AC voltage across a capacitor with C = 1.2 µF has an amplitude of V max = 16 V, and the current during the capacitor has an amplitude of 5.0 mA. What is the frequency?
The circuit in the drawing contains two resistors and twocapacitors that are connected to a battery via a switch. When theswitch is closed, the capacitors begin to charge up. What is the time constant for the charging process?
What is the momentum of a 950 kg sports car traveling down the road at a speed of 26 m/s
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. If the original star rotated once in 34 days, find the angular speed of the neutron star
The microwaves in a microwave oven are produced in a special tube called a magnetron. what is the maximum velocity the electrons may have
a golf ball with mass 45.90 g and diameter 42.60 mm is struck such that it moves and rotates with a frequency of 3081
Determine the acceleration of bodies A and B and the tension in the (non stretching) cable due to the application of the 60 lb force. Neglect all frictional forces and the masses of the pulleys.
a ball of mass m and moment of inertia i bmr2 is held motionless on a plane of mass m and angle of inclination theta.
Suppose that the aluminum cup inside a calorimeter has a mass of 48 g and contains 84 g of water. Both the cup and water are initially at a temperature of 5.6 degrees C, what is your best estimate of the specific heat of the aluminum
Two loudspeakers are placed on a stage 5.4 m apart and are radiating the same frequency, in phase. Calculate the frequency of the sound
A 2.0 kg object has an initial velocity of 10 m/s but comes to rest in five seconds. What is the magnitude of the force acting on the object
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