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The three 100-mm-diameter spheres constructed of different metals are located at the vertices of an equilateral triangle indeep space. Determine the resultant R of the gravitational forces which the aluminium and cast-iron spheres exert on thecopper sphere
Three blocks, each of mass 12 kg are on the frictionless table. A hand pushes on the left most box (A) such that the three boxes accelerate in the positive horizontal direction as shown at a rate of a = 1.1 m/s2. What is the net horizontal force on b..
The cheetah can reach atop speed of114km/h (71mi/h). While chasing its prey in a short sprint, find the cheetah's average acceleration during the short sprint
As shown in the figure, the angle between two plane mirrors (M1 and M2) is 125o. If the incident ray strikes mirror M1 with an angle of incidence θ1i = 66o, determine the angle of reflection θ2r for mirror M2.
A rock is lauched from the moon and travels away from it at a speed of 2/5, Call the event of the rocket's lauching event A, Draw a spacetime diagram of the situation, drawing and labeling the worldlines of the moon
A cord is 20cm long, four complete waves fit along its length when vibrated 30 times per second for the waves on the cord. What is the wavelength? What is the frequency? What is the speed?
During the the a compact disc (CD) accelerates from rest to a constant rotational speed of 900 rev/min, What is the angular acceleration of the CD
A converging lens with a focal length of +18.0 cm is located 12.0 cm to the left of a diverging lens having a focal length of -13.0 cm. What is the magnification
Consider a diffraction screen with 3 slits. What would be the purpose of using a diffraction screen with 10 slits
Car 1 has a mass of m1 = 65000 kg and a velocity of v01 = +0.80 m/s. Car 2 has a mass of m2 = 92000 kg and a velocity of v02 = +1.2 m/s, overtakes car 1 and couples to it. Determine the velocity of their center of mass (a) before and (b) after the co..
One side of the roof of a building slopes up at 43.0°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. Determine the maximum height the rock reaches above the point where it was kicked
Two protons are moving directly toward one another. When they are far apart, What is the distance of closest approach?
convert 25mus into ams bmihthe kinetic energy of a car of mass m moving with velocity vis emv22. if m1000kg and v6ms
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