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The distance between an object and its image is fixed at 48 cm. A converging lens of focal length 9.0 cm forms a sharp image for two positions of the lens. What is the distance between these two positions? (cm)
A 240 gram block slides back and forth on a frictionless surface between two springs. Determine the speed of the block as it moves between the springs
A rotating fan completes 1200 revolutions every minute. Consider a point on the tip of a blade, at a radius of .20 m.
An engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed for this plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum..
A three-step cycle is undergone by 3.4 mol of an ideal diatomicgas: (1) the temperature of the gas is increased from 200 K to 400 K at constanr volume;
A wheel rotating about a fixed axis through its center has a constant angular acceleration of 4 rad/s^2. In cerain 4s interval the wheel turns through an angle of 80 rads.
what is the equation for gravitational potential energy?what is the equation for kinetic energy?define conservation of
A satellite circles the earth in an orbit whose radius is 2.78 times the earth's radius. What is the period of the satellite
q1. a 245 ball is tied to a string. it is pulled to an angle of 5.20 and released to swing as a pendulum. a student
A man of mass 45 kg. is standing on a uniform rolling board of length 10 m. and mass (mb = 30 kg). how far does the board retreat
A solid sphere with a radius of 75 mm rolls (without slipping#) down from rest along an inclined plane that is 5 m long. What angle does the plane make with the horizontal
An electron initially at rest is accelerated between two parallel plates 2.000 cm apart. find the electric force on the electron between the plates
An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff
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