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An ant travels in a completely straight line in the –x direction some distance. It turns, and then travels some new displacement, 30.0 degrees above the +x axis, again, in a straight line, for some distance. The final leg of its little ant journey is a displacement of 15 cm, 40.0 degrees below the +x axis, and its back at its starting point. What are the magnitudes of the first two displacements?
A metal object is suspended from a spring scale. The scale reads 920 N when the object is suspended in air and 750 N when the object is completely submerged in water. Discover the volume of the object. Discover the density of the metal.
A car travels along a straight stretch of road. It proceeds for 15.7 mi at 55 mi/h, What is the car's average velocity during the entire trip
Xenon ions with a mass of 2.20×10?25 kg and charge +e are accelerated between the plates of an ion drive rocket engine to an exhaust velocity of 43,200 m/s. What is the potential difference between the plates
The resolution of the eye is eventually limited by the pupil diameter. What is the smallest diameter spot the eye can produce on the retina if the pupil diameter is 3.00 mm? S
A massive pulley in the shape of a solid disk is mounted on an axle with negligible friction. What is the mass of the pulley
The coil of a galvanometer has a resistance of 18.6 ?, and its meter deflects full scale when a current of 6.48 mA passes through it. What is the maximum current that this ammeter can read
A skater spins with her arms extended at a speed of 11 m/s. If she then whips her arms in to her body to form a circle with a radius of 0.4 m, what was the radius of the circle
A wheel initially has an angular velocity of 18 rad/s. It has a constant angular acceleration of 2.0 rad/s2 and is slowing at first. What time elapses before its angular velocity is18 rad/s in the direction opposite to its initial angular velocity
consider an ink jet printer the basic mechanism is that drops of ink each with a radius of r20um are charged to
a step-up transformer has 50 turns on the primary coil and 500 turns on the secondary coil. if this transformer is to
A rocket that starts at rest with mass M ejects exhaust at a given speed u. What is the mass when its energy is maximum
you are given three resistors each of 10 kq and a 9-v battery whose negative terminal is connected to ground. witha
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