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a car accelerates along a straight road from rest to 90km/h in 5 seconds, what is the magnitude of its average acceleration?
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Question: A proton has an initial speed of 3.5 x 10 5 m/s. a) What potential difference is required to bring the proton to rest? b) What potential difference is required to reduce the initial speed of the proton by a fac ...
Question: Positive point charges q = 7.00uC and q'= 4.00uC are moving relative to an observer at point P, as shown in the figure (Figure 1). The distance d is 0.130m , v = 4.60 x 10^6 m/s , and v'= 9.20 x 10^6 m/s Part A ...
Question: A thin stream of water flows vertically downward. The stream bends toward a positively charged object when it is placed near it. The positively charged object is then removed. What will happen to the same strea ...
Quesiton: A skydiver of mass m jumps from a hot air balloon and falls a distance d before reaching a terminal velocity of magnitude v . Assume that the magnitude of the acceleration due to gravity is g . - What is the wo ...
Question: A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 6.30s later. What was the rocket's acceleration in m/s^ ...
Question: A single dog barks at a sound intensity level of ? = 94 dB. Randomized Variables ? = 94 dB Part (a) Another dog runs up beside the first dog and starts barking at the same sound intensity level. What sound inte ...
A ball is thrown straight up with an initial speed of 30 m/s. How long will it take to reach the top of its trajectory, and high will the ball go? A car slows to a stop with an average acceleration of - 2.5 m/s2. How lon ...
Question: In an old-fashioned amusement park ride, passengers stand inside a3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backsagainst the wall. The cylinder begins to rotate about a verticalaxis. Then the ...
Questin: A research submarine has a 30-cm-diameter window that is 9.0cm thick. The manufacturer says the window can withstand forces up to 1.2*10^6N . What is the submarine's maximum safe depth in salt water? The pressur ...
Question: A real image is four times as far from a lens as is the object. What is the object distance, measured in focal lengths? The response must be typed, single spaced, must be in times new roman font (size 12) and m ...
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