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an automobile has aa vertical radio antenna 120 mlong the automobile travels at 650 kmh on a horizontalroad where
a nearsighted person cannot read a sign that is more than 52 mfrom his eyes to deal with this problem he wears contact
a rocket of total mass 3180 kg is traveling in outer spacewith a velocity of 115 ms toward the sun it wishes to alter
two long parallel wires carry currents of 20 a and 50 a inopposite directions the wires are separated by 020 ma what is
a converging lens has a focal length of 0080 m an objectis located 0040 m to the left of this lens a second
two long parallel wires carry currents of 10 a in opposite directions they are separated by 40 cm what is the magnetic
a diverging lens has a focal length of 53 cmif an object is 40 cm from the lens what is the image distance what is the
a golfer imparts a speed of 292 ms to a ball and it travels the maximum possible distance before landing on the green
the distance of the lens in the human eye fromthe retina on which the image is focused is about 17 cm to focus on a
assume the near point of the eye is 25cm thedistance between the eyepiece and objective lens in a certaincompound
a ball is tossed from an upper-story window of a building the ball is given an initial velocity of 910 ms at an angle
a hunk of aluminum is completely covered with a gold shell toform an ingot of weight 450 n when you suspend the ingot
two astronauts one of mass 60 kg and the other 82 kg are initially at rest in outer space theythen push each other
two flat surfaces are exposed to a uniform horizontalmagnetic field of magnitude 049 t when viewed edge-on the
a bolt is dropped from a bridge under construction falling 94 mto the valley below the bridge a in how much time does
airplane flight recorders must be able to survive catastrophiccrashes therefore they are typically encased in
a storage tank 30 m high is filled with gasolinea find the gauge pressure at the bottom of the tankb calculate the
a comet of mass 45 e22 kg moving at 10000 ms collides withthe earth initially at rest and stick the mass of the earth
a 5kg steel ball is dropped onto a copper plate from a heightof 10m if the ball leaves a dent 32mm deep what is the
a uniform drawbridge must be held at a 37 degree angle abovethe horizontal to allow ships to pass underneath the
1 in a capacitor one side accumulates charge because the battery is putting charges on it explain how the other plate
a uniform ladder 50 m long rests against a frictionlessvertical wall with its lower end 30 m from the wall the
a particle of charge 303 x 10-6 c is 102 cmdistant from a second particle of charge -185 x 10-6 ccalculate the
a lawn mower in the form of a thin-walled hollow cylinder withmass m is pulled horizontally with a constant horizontal
a boat moves through the water of a river at 100 ms relative to the water regardless of the boats direction if the