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A passenger on a stopped bus notices that rain is fallingvertically just outside the window. When the bus moves with theconstant velocity, the passenger observes that the fallingraindrops are now making an angle of 19º with respect to the vertical. What is the ratio of the speed of the raindrops to the speed of the bus?
after walking across a dry carpet theres a potential difference of 5500 v between your hand and the doorknob. as you
In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotati..
The rms current in an ac circuit with a resistance of 130 O is 0.96 A. What is the average power consumed by this circuit
each of two very long straight parallel rods carries a positive charge of x coulombs per meter. the distance between
suppose the driver in this example is now moving with speed 36.5 ms and slams on the brakes stopping the car in 5.3
A 4.0 kg mass is hung vertically from a spring with a spring constant of 510 N/m. It is pulled down from its equilibrium position by 2.0 cmand allowed to oscillate. What are the period and frequency of oscillation
electrons are ejected from a metallic surface with speeds up to 460000 m/s when light of wavelength 650 nm is used. find the work funtion
A uniform, 257-{\rm N} rod that is 2.05 {\rm m} long carries a 225-{\rm N} weight at its right end and an unknown weight W toward the left end, how far must the fulcrum be moved to restore balance
A 70.0 kg box is pulled by a 500N force at an angle of 30degrees to the horizontal. The friction is 30.0 N. Write the Newton's 2nd Law equations for the sum of the forces inboth the X and Y direction. What is the acceleration of the box?
In exercise physiology studies, it is sometimes important to determine the location of a person's center of mass. How far from the woman's feet is her center of mass
A periscope for a submarine uses two totally reflection 45°-45°-90° prisms with total internal reflection on the side adjacent to the 45° angles. It springs a leak, and the bottom prism is covered with water. Explain why the periscope no long works. ..
You are standing in the very center of a deep, flat-bottomed valley, and shout "Hello!" If the speed of sound is 343 m/s, how wide is the valley
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