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As the drawing illustrates, two disks with masses m1 and m2 are moving horizontally to the right at a speed of v0. They are on an air-hockey table, which supports them with an essentially frictionless cushion of air. They move as a unit, with a compressed spring between them, which has a negligible mass. Then the spring is released and allowed to push the disks outward. Consider the situation where disk 1 comes to a momentary halt shortly after the spring is released. Assuming that m1 ?? 1.2 kg, m2 ?? 2.4 kg, and v0 ?? ??5.0 m/s, find the velocity of disk 2 at that moment.
suppose that the gold ions carry one elementary unit of positive charge.
A high-speed drill reaches 2000 rpm in 0.50 s. What is the drill's angular acceleration? Through how many revolutions does it turn during this first 0.50s.
A long solenoid has 1.56e+3 turns in length of 40.0 cm. What current has to flow through the solenoid in order to generate a magnetic field
A ray of light consisting of two colors (red and blue) is incident normally on the face of a small equilateral prism. What is the distance between the two colors on the screen
What is the lift (in newtons) by reason of Bernoulli's principle on a wing of area 77 m^2 if the air passes over the top and bottom surfaces at speeds of 270 m/s and 140 m/s, correspondingly.
find the period of this oscillation.
A dielectric-filled parallel-plate capacitor has plate area = 30.0cm^2 , plate separation = 5.00mm and dielectric constant = 5.00. The capacitor is connected to a battery that creates a constant voltage = 10V.
A loop of diameter d = 12 cm, carrying a current I = 0.4 A is placed inside a magnetic field B = (0.2 T) i^+ (0.4 T) j^. What is the potential energy of the loop
A spherical mirror is polished on both sides. When the convex side is used as a mirror, the magnification is +1/4. What is the magnification when the concave side is used as the mirror, the object remaining the same distance from the mirror.
If 20 grams of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temerature.
The magnetic field B at the center of a circular coil of wire carrying a current I (as in fig. 20-9) is where N is the number of loops in the coild and r is its radius. estimate the magnetic field strength at the center of coil
The motion of a particle is given by x= Asin^3(wt). What is the expression for the particle's velocity
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