Physics, 07.11.2019 04:31 natalievick03
The flywheel of a steam engine runs with a constant angular velocity of 190 rev/min. when steam is shut off, the friction of the bearings and of the air stops the wheel in 2.4 h. (a) what is the constant angular acceleration, in revolutions per minute-squared, of the wheel during the slowdown? (b) how many revolutions does the wheel make before stopping? (c) at the instant the flywheel is turning at 95.0 rev/min, what is the tangential component of the linear acceleration of a flywheel particle that is 38 cm from the axis of rotation? (d) what is the magnitude of the net linear acceleration of the particle in (c)?
Answers: 1
Physics, 21.06.2019 21:30, canyonrico05
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?
Answers: 3
Physics, 22.06.2019 11:20, kendallnowell18
If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s
Answers: 1
Physics, 22.06.2019 14:30, juanaaraujo1104
Which one of the following terms is used to indicate the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line? velocity acceleration equilibrium force inertia
Answers: 2
The flywheel of a steam engine runs with a constant angular velocity of 190 rev/min. when steam is s...
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