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As soon as a traffic light turns green, a car speeds up from restto 49.0 mi/h with constantacceleration 7.00 mi/h-s. In theadjoining bike lane, a cyclist speeds up from rest to 23.0 mi/h with constant acceleration 13.00 mi/h-s. Each vehicle maintains constantvelocity after reaching its cruising speed.
(a) For what time interval is the bicycle ahead of the car?
(b) By what maximum distance does the bicycle lead the car?
to ensure a tight fit cylindrical metal elements are sometimes made the same size or even slightly larger than the
The magnetic force per meter on a wire is measured to be only 27% of its maximum possible value.Calculate the angle between the wire and the magnetic field.
the press box at a baseball park is 36.0 ft above the ground. a reporter in the press box looks at an angle of 13.1deg
a 71 kg baseball lplayer jumps straight up to catch a line drive. If the 140 g ball is moving horizontally at 28 m/s and the catch is made when the ball player is at the highest point of his leap what is his speed immediately after stopping the ba..
A guitar string produces 4 beats per second when sounded with a 350-Hz tuning fork and 9 beats per second when sounded with a 355-Hz tuning fork. What is the vibrational frequency of the string
A 240 , 50.0-cm-diameter turntable rotates on frictionless bearings at 57 . A 22 block sits at the center of the turntable. A compressed spring shoots the block radically outward along a frictionless groove in surface of the turntable. What is turn..
What is EMF in the secondary circuit
The left end of a long glass rod 7.00cm in diameter has a convex hemispherical surface 3.50cm in radius. The refractive index of the glass is 1.60. How far from the left end of the rod must the object be located to form the image
An aluminum-alloy rod has a length of 10.009 cm at 16.200°C and a length of 10.021 cm at the boiling point of water. compute the length of the rod at the freezing point of water
A 0.075 kg toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.15 m/s in a horizontal circle of radius 0.35 m
A wave with a frequency of 230Hz and a wavelength of 12.9cm is traveling along a cord. The maximum speed of particles on the cord is the same as the wave speed. What is the amplidute of the wave?
If a current of 8.3 A is drawn from the battery when a resistor R is connected across the terminals ab of the battery, what is the power dissipated by the resistor R
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