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a nylon rope used by mountaineers elongates 130m under the weight of a 655kg climber if the rope is 455m in length and
an asteroid orbits the sun at a constant distance of 3540e11 meters the suns mass is 199times1030 kg what is the
a small but measurable current of 11 10-10a exists in a copper wire whose diameter is 31 mm assume the current is
an electric fan is running on high after the low button is pressed the angular speed of the fan decreases to 838 rads
the earth orbits the sun once a year 316x 107s in a nearly circular orbit of radius 150x1011m with respect to the sun
the earth has a radius of approximately 637 x 10 6 meters m determine the surface area of the earth in square
a light bulb is wired in series with a 124 resistor and they are connected across a 1200-v source the power delivered
a vertical solid steel post 240cm in diameter and 250m long is required to support a load of 8100 kg you may ignore the
a star has a mass of 187 x 1030 kg and is moving in a circular orbit about the center of its galaxy the radius of the
a current of 0500 a flows through an aluminum wire the aluminum wire has a length of 200 m a diameter of 00300 cm and a
a baseball thrown at an angle of 550 above the horizontal strikes a building 180 away at a point 800 above the point
an iron heating coil for a burner on an electric range runs off a 240v circuit and produces 100 watts of heat given a
a medium sized home may have a roof with a surface area of 120m2 assuming 12 hours of sunlight that strikes the roof at
two objects are connected by a light string that passes over a frictionless pully as shown in the figure below if m 4
an idealized voltmeter is connected across the terminals of a 150 v battery and a 75 ohm appliance is also connected
a fox fleeing from a hunter encounters a 0615 m tall fence and attempts to jump it the fox jumps with an initial
a car moves at a constant speed on a strait but hilly road one section has a crest and dip of the same 500 m diameter
a student builds and calibrates an accelerometer which she uses to determine the speed of her car around a certain
a basketball player is standing on the floor 12 m from the basket the hight of the basket is 305m and he shoots the
ordinary glasses are worn in front of the eye and usually 200rm cm in front of the eyeball a certain person can see
a 23kg cart is rolling across a frictionless horizontal track toward a 15kg cart that is held initially at rest the
an airplane propeller is rotating at 1250 rpm it takes 427times10-3 s to turn through 32 degrees at 201 rpm what is the
two disks are rotating about the same axis disk a has a moment of inertia of 459 kgmiddotm2 and an angular velocity of
the intensity of an electromagnetic wave is 8 times 107 wm2 what is the amplitude of the magnetic field of this
an ac generator has 80 rectangular loops on its armature each loop is 12 cm long and 8 cm wide the armature rotates at