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A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. Each exerts a constant force and pulls the wagon through the same displacement. They do the same amount of work, but the husband's pulling force is directed 60° above the horizontal, and the wife's pulling force is directed 34° above the horizontal. The husband pulls with a force whose magnitude is 62 N. What is the magnitude of the pulling force exerted by his wife?
A student of weight 665 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from seat is 566 N.
A magnifying glass has a converging lens of focal length of 18.80cm. At what distance from a nickel must you hold this lens to get an image with a magnification of +2.47.
A cylinder of radius a = 9.4 cm and height h = 9.5 cm is aligned with its axis along the y-axis as shown. What is the total flux ? that passes through the cylindrical surface? Enter a positive number if the net flux leaves the cylinder and a negat..
A negative charge moves in the direction of a uniform electric field. Does the charge move to a position of higher or lower potential
An ocean liner leaves New York City and travels 13° north of east for 268 km. How far east and how far north has it gone? In other words, what are magnitudes of the components of the ship's displacement vector in the following directions.
A screen is placed 1.0 meter away from the slits. Initially, you measure the interference pattern from the 2 slits on the screen. You then place the guanine film directly behind one of the slits, Determine the thickness of the guanine film
Assume that there is a very beautiful ornate crown, supposedly made of solid gold, how would you determine its density
A model rocket is launched straight upward with the initial speed of 70m/s. It accelerates with a constant upward acceleration of 3 m/s2 until its engines stop at an altitude of 180 m.
An unmarked police car travelling a constant 95 km/h is passed by a speeder travelling 145km/h. Precisely 1 s after the speeder passes, the police officer steps on the accelerator.
Calculate the number of electrons in a steel (iron) pinhead. The pinhead may be assumed to be spherical with diameter 2 mm
A dog running in the +y-direction at 7.0 m/s hears its owner call from behind, Compute the dog's change in velocity
A block of mass m = 3.40 kg is pushed a distance d = 2.30 m along a frictionless, Determine the work done by the net force on the block.
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