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A particular refracting telescope takes the moon and magnifies the image by a power of 250x with the observer having a relaxed eye. The telescope is constructed using brass tube 450 cm long with the objective and eyepiece located at opposite ends. What are the focal lengths of the two lenses?
a bar magnet is dropped through a loop of wire, what is the direction of the current at the instant it is in the middle
A heat engine that is 58.6% efficient does 235.4 kJ of work. How much thermal energy input was required to perform this work
A person driving her car at 53.0 km/h approaches an intersection while the traffic light turns yellow. She knows that the yellow light lasts only 2s before turning to red.
A 0.290-kg block along a horizontal track has a speed of 1.60 m/s, What is the spring's maximum compression if the track is frictionless
When a potential difference of 12 V is applied to a wire 5.6 m long and 0.28 mm in diameter the result is an electric current of 1.2 , What is the resistivity of the wire
A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.897 g, q = 3.51 µC is located on the x axis at x = 15.4 cm, moving with a speed of 72.2 m/s in the positive y direction. For what value of Q (in ?..
A 1000kg car moving 40m/s skids to a stop. During the skid, the only force is the frictional force between the tires and the road, What is the initial kinetic energy of the car
While you are sitting on a chair at the edge of a 1.8 m deep swimming pool, your eyes are 1.7 m above the surface of the water. What is the horizontal distance between you and the acorn?
A pot containing 1.01 liter of water, initially at 19°C, is placed on a 1051 W electric heating element. How much heat is necessary to boil all the water away
Your report should comprise be in the form of a two page memo/document that discusses the regulations and explain how they will apply to your hiring process.
A person lifts a 5kg cement block a vertical distance of 2.3m and after that aeries the block horizontally a distance of 6m. Determine the work completed by the person and by the force of gravity in this process.
An explorer in dense jungles of equatorial Africa leaves his hut. He takes 41 steps at an angle 45 north of east, then 81 steps at an angle 60 north of west, then 51 steps due south. Suppose his steps all have equal length. Save him from becoming ..
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