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A cyclist is at rest at a traffic light. When the light turns green he accelerates at a uniform rate of a = 1.2 m/s2. How many seconds after the light turn green does he reach his cruising speed of 6 m/s? Please explain step by step.
A glass lens has a convex surface with radius 25.0 cm and a concave surface with a radius of 50.0 cm. Calculate the focal length of this lens
A diver beneath the surface of water in a lake looks up at 27 degrees from the vertical to see a life ring floating on the surface. How far is the base of the smokestack from the life ring
White light (400 - 700 ) is incident on a 610 diffraction grating. What is the width of the first-order rainbow on a screen 2.3 behind the grating
Suppose you see two main-sequence stars of the same spectral type. Star 1 is dimmer in apparent brightness than Star 2 by a factor of 100. What can you conclude? (Overlook any effects that might be caused by interstellar dust and gas.)
Five 5 ohms resistors are connected in series with a 15 Volt battery. Determine the equivalent resistance of the circuit
q1. two charges are placed on the x axis. one of the charges q1 6.95c is at x1 3.00 cm and the other q2 -27.3c is at
Explain how would the results have differed in this experiment if the pulley and of the track was lower that the other end of the track?
What's the change in the atom's total energy if the radius increases to 25a0? Does this process correspond to the emission or absorption of a photon? What's the photon's wavelength?
A rotating wheel requires 9.00 s to rotate 26.0 revolutions. Its angular velocity at the end of the 9.00-s interval is 95.0 rad/s. What is the constant angular acceleration
Water is flowing through a pipe with a constriction. The area of the narrow section is one-half the area of the wide section. what is the velocity of the fluid in the narrow section
Two cylindrical artificial bones are made of the same material and length, one with twice the radius as the other. When the two have the same tension force applied, the larger bone stretches by what factor compared to the smaller bone?
A wheel starts from rest and reaches an angular speed of 6.0 rad/s while turning through 2.0 revolutions. What is the average angular acceleration of the wheel
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