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A concave mirror forms an inverted image 4 times larger than the object. Evaluate the focal length of the mirror if the distance between the image and the object is 50 cm.
A rifle with a barrel length of 65 cm fires a 9 g bullet with a horizontal speed of 380 m/s. find resistive force does the wood exert on the bullet
A soap film formed in a loop of wire is, because of its weight, not exactly uniform in thickness, but wedge-shaped in cross section. When the film is illuminated with 546 nm light, one sees four interference fringes spread over a distance of 2.0 c..
A gas is compressed at a constant pressure of 0.800 atmfrom 7.00 L to 3.00 L. In the process, 400 J of energy leaves the gas by heat. What is the work done on the gas? What is the change in its internal energy?
A total charge of 14 mC passes through a cross-sectional area of a nichrome wire in 2.8 s. If the number of charges that pass through the cross-sectional area during the given time interval doubles, what is the resulting current
An Shot putter throw the shot from a height of 2m over the ground with the speed of 15m/s in the direction 36,9° upwards. What is the speed of the shot when it lands
a diver springs upward with an initial speed of 2.65 ms from a 3.0-m board.a find the velocity with which he strikes
Determine the greatest vertical displacement of the pendulum (height). The mass lost by the rocket during these 30.0 is negligible. What impulse does an engine impart to the rocket?
A 3.00-kg block starts from rest at the top of a 27.0° incline and slides 2.00 m down the incline in 1.20 s. Find the frictional force acting on the block
Car has the mass M = 1100kg at 60.0 km/hour. What is the radius of the turn if theta = 20.0 degrees
The masses of the earth and moon are 5.98 × 1024 and 7.35 × 1022 kg, respectively. What is the magnitude of the charge placed on each body
Two 32.4-cm metal rods, one made of copper and one made of aluminum, are placed end to end, touching each other. How far does the other end of the system of rods move
A grappling hook, attached to a 1.5-m rope, is whirled in acircle that lies in the vertical plane. In the absence of airresistance, to what maximum height can the hook be cast
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