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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 rock climber throws a small first aid kit to anotherclimber who is higher up the mountain. What is the vertical height between the two climbers
A force given by F(x) = 5x3 (in N/m3) acts on a 1-kg mass moving on a frictionless surface. The mass moves from x = 3.87 m to x = 6.09 m. How much work is done by the force
What is the total resistance of the circuit? Calculate the total reactance X = (XL - XC) in the circuit. Calculate the average power dissipated in the circuit.
a superball with mass equal to 50 grams is dropped from a height of 1.5m . It collides with a table, then bounces up to a height of 1m. Find the y component of the momentum of the ball immediately before the collision
at what separation is the electrostatic force between a 10.4 point charge and a 28.2 point charge equal in magnitude to
You stand on the surface of the moon (which is too small to have an atmosphere) and throw a rock of mass 2.50 kg straight upward with an initial speed 40.0 m/s. What maximum height above the surface of the moon will the rock reach
Find C, y_envelope (x,t), and y_carrier (x,t). Express your answer in terms of A, k1, k2, x, t, w1 and w2. Separate the three terms with commas. Recall that y_envelope (the second term) varies slowly whereas y_(rm carrier) (the third term) varies ..
A 2.0cm tall object is located 18.0cm in front of a converging lens with a focal length of 10.0cm. Is it virtual or real
A billiard ball moving at 5.30 m/s strikes a stationary ball of the same mass. Find the velocity (magnitude and direction) of the second ball after collision
An ocean liner leaves New York City and travels 16.10 ° north of east for 234 km. How far east and how far north has it gone? In other words, what are the magnitudes of components of the ship's displacement vector in directions (a) due east and (b..
A spacecraft is traveling with a velocity of V0x=5480m/s along the+x direction. Two engines are turned on for a time of 842s.One engine gives the spacecraft an acceleration in the +x directionof ax=1.20m/s^2, while the other gives it an acceleration ..
A block is launched with initial speed 2.1 up a 30 degree frictionless ramp. How far up the ramp does it slide
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