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A sled with mass 8.00 kilogram moves in a straight line on a frictionless horizontal surface. At one point in its path, its speed is 4.00 m/s; after it has traveled 2.5 meter beyond this point, its speed is 6.00 m/s. Use the work-energy theorem to determine the force acting on the sled, assuming that this force is constant and that it acts in the direction of the sled's motion.
Three successive resonant frequencies in an organ pipe are 865, 1211, and 1557 Hz. What is the fundamental frequency
A ray of light is incident normally on a glass plate 6.00 cm thick and of refractive index n = 1.29, find the increase in the distance the ray travels in the glass
A steel wire of length 1.97m with circular cross section must stretch no more than 0.270cm, What minimum diameter dmin is required for the wire
steam enters a turbine operaing at steady state at 700of and 450 psi and leaves as a saturated vapor at 1.2 psi. the
The inner and outer surfaces of a cell membrane carry a negative and a positive charge, respectively. find the magnitude of the electric field in the membrane
A diver completes somersaults during a 2.1 sec dive. What was the diver's average angular speed during the dive
A plane is headed east with an air speed of 272.0 m/s, Find the velocity of the plane relative to the earth
A particular engine has a power output of 6.00 kW and an efficiency of 21.0%. Assume the engineexpels 8500 J of energy in each cycle. Find the time required to complete each cycle
A half-Atwood's machine consists of two masses, m1 = 8 kg and m2 = 5 kg, which are connected by a light string that passes over a pulley. what speed will it have just before hitting the floor
A crate of mass m1 on a frictionless inclined plane is attached to another crate of mass m2 by a massless rope. The rope passes over an ideal pulley so the mass m2 is suspended in air.
A 700. newton stunt pilot flying a 980.kg plane in a vertical loopwith a radius of 600. meters is "weightless" at the top of theloop. Calculate the plane's speed
A thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized. The lens has equal radii of 76 cm and the refractive index is n = 1.4. (a) What is the distance d from image to screen? (b) What is the total ..
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