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A convex spherical mirror, whose focal length has a magnitude of 15.0cm, is to form an image 10.0cm behind the mirror. (a) Where should the object be placed? (b) What is the magnification of the mirror?
The excess internal energy of metabolism is exhausted through a variety of channels, such as through radiation and evaporation of perspiration. Calculate the rate at which you lose energy by exhaling humid air
A white billiard ball with mass mw = 1.41 kg is moving directly to the right with a speed of v = 3.33 m/s, What is the final speed of the white ball
A 45dB sound wave strikes an eardrum whose area is4.2multiplied by10-5m2. How much energy is absorbed by the eardrum per second
A 75 g, 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay travelling horizontally at 2.1 m/s hits and sticks to a very bottom tip of the rod.
A science student is riding on a flatcarof a train traveling along a straight horizontal track at aconstant speed of 12.0 m/s. How high does she see the ball rise
You're a production engineer in a cookie factory, where mounds of dough drop vertically onto a conveyer belt at the rate of one 14 mound every 2 seconds. What average force must the mechanism exert on the belt
The lower boundary of the plate is defined by: y = 0.650 x2. The plate has a mass of 3.70 kg. Find the moment of inertia of the plate about the y-axis
q1. a football player runs directly down the field for 16 m before turning to the right at an angle of 33 from his
The charge and the mass of an alpha particle are = 3.20×10-19 and = 6.68×10-27 , respectively. What is the final velocity of the alpha particle
A car of mass 1430 kg traveling at 28 m/s is at the foot of a hill that rises 105 m in 3 km. Find the average power delivered by the car's engine
A steel rod has a length of exactly 0.2cm at 30degree centigrade. what will be its length at 60degree centigarde?
A camera's flash uses the energy stored in a 270 microF (uF) capacitor charged to 190 V. The current in the charging circuit is not to exceed 25 mA. What's the resistance in the charging circuit
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