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A bicycle rider has a drag area of 0.28 m2. She is riding at a velocity of 9 meter per second along the road and the air density is 0.98 kg/m3. Total mass of the rider and bike is 93 kilogram. The coefficient of rolling resistance is 0.003. The road is horizontal and the wind is calm. Obtain what power must the cyclist produce to maintain the speed of 9 m/s?
10a 40-kg block a is pushed against a horizontal light spring with constant k 40 104 nm. when the spring is compressed
A particle possessing 8.25 uC of charge and mass 8.55 g is fired at a speed of 255 cm/s through two charged plates of length 34.6 cm, calculate the distance y in which the charge falls below its intended path
the absolute portential at the exact center of a square is 3.0v when a charge of +Q is located at one of the squares corners. What is the absolute potential at the squares center
A ferris wheel with radius 14.0m is turning about a horizontal axis through its center. What is the magnitude of the passenger's acceleration as she passes through the lowest And highest Point in her circular motion in m/s^2
A volley ball is spiked so that it has an initial velocity of 17 m/s directed downward at an angle of 65° below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?
A spacecraft approaching the earth launches an exploration vehicle. After the launch, What is the speed of the exploration vehicle relative to the spaceship
A 10.2 cm diameter loop of wire is initially oriented perpendicular to a 1.6T magnetic field. The loop is rotated so that its plane is parallel to the field direction in 0.21 seconds. What is the avg induced emf in the loop?
An amateur astronomer decides to build a telescope from a discarded pair of eyeglasses. One of the lenses has a refractive power of 11 diopters, How far apart should the lenses be separated
a current of 2.78A slows in a straight wire segment of length 3.00cm i + 4.00cm j in a uniform magnetic field of strngth (2.50T).
A certain red giant star has a luminosity of 100,000 times that of the Sun and is located 600 light-years from Earth. calculate the rate of interstellar extinction in the direction of the star
A ball of mass 0.113 kg is dropped from a height of 1.92m above ground. The acceleration of gravity is 9.8m/s^2.Neglecting air resistance find the speed of the ball when it is at a height of 0.812 m above the ground. Answer in units of m/s.
Standing at the edge of a cliff 33.5 m high, you drop a ball. Later, you throw a second ball downward with an initial speed of 12.7 m/s. What is the increase in speed of the second ball
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