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Q1. A converging lens has a focal length of f = 29 cm. If an object is placed 40 cm from the lens, where will the image be formed?
Q2. Halley's Comet, which passes around the Sun every 75 years, has an elliptical orbit. When closest to the Sun (perihelion) it is at the distance of 8.825 times 10^ {10}; {rm{m}} and moves with a speed of 54.6 {rm km}/{rm s}. The greatest distance between Halley's comet and the Sun (aphelion) is 6.152 times 10^ {12}; {rm{m}}.
A 3.60-{rm m}-long, 430 {rm kg} steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 {rm kg} construction worker stands at the far end of the beam. What is the magnitude..
A bird sitting in a tree is travelling at 40 km/s relative to the faraway Sun. When the bird drops to the ground below, does it still go 40 km/s, or does this speed become zero.
Coefficient of linear expansion for aluminium
A 238 g particle is released from rest at point A inside a smooth hemispherical bowl of radius 32.5 cm.compute the gravitational potential energy at A relative to B.
Determine the efficient spring constant of the molecule
What is the tension in the string
What is the pressure inside the thermos
A 1.20 liter flask contains a certain quantity of ideal gas at 305 K. next an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.30 times its original value. What is the final temperature.
What is pressure in the cylinder
A 18.0 kg loudspeaker is suspended 2.40m below the ceiling by two 4.10m long cables that angle outward at equal angles. What is the tension of each of the cables.
A skier starts from rest at the top of a hill that is inclined at 12.0° with the horizontal. The hillside is 180.0 m long, and the coefficient of friction between the snow and the skis is 0.0750. At the bottom of the hill, the snow is level and the c..
A hunter aims directly at a target (on the same level) 84.2m. If the bullet leaves the gun at a speed of 193 m/s, by how much will it miss the target.
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