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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 rotational motion is faster than two revolutions per minute. On the other hand, the magnitude of the centripetal acceleration at the astronauts' feet should equal the magnitude of the acceleration due to gravity on earth. Thus, to eliminate the difficulties with motion sickness, designers must choose the distance between the astronauts' feet and the axis about which the space station rotates to be greater than a certain minimum value. What is this minimum value?
Two 4.4 cm× 4.4 cm metal plates are separated by a 0.19-mm-thick piece of Teflon, What is the maximum potential difference between the disks
If they travel the length of the tube at full speed (they don't, because they are accelerating), how long is the tube in the electrons' reference frame
How numerous extra electrons are on this particular oil drop (given the presently known charge of the electron)?
A car of mass 930 kg is traveling over the top of a hill, If the hill has a radius of curvature of 38 m and the car is traveling at 13 m/s, what is the normal force between the hill and the car at the top of the hill
A certain dog whistle operates at 22.75 kHz, while another (brand X) operates at an unknown frequency. estimate the operating frequency of brand X
A certain man has skin tissue with the following characteristics: thickness of skin tissue, 3.88mm; surface area, 1.75m^2. estimate the temperature at the surface of the mans skin
A 10 kg box is being pushed up a slippery ramp at and angle of 10 degrees. What force does the man need to apply to the box to keep it traveling up the ramp at a steady speed
A planet's moon travels in an approximately circular orbit of radius 5.4 107 m with a period of 7 h 21 min. Calculate the mass of the planet from this information
Determine the stopping distances for a car with an initial speed of 94 and human reaction time of 0.90 , for an acceleration
question1hold switch closed. place a magnetic field sensor between the turns of the slinky by its center. rotate the
A gymnast with mass m1 = 40 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 110 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
A motor is designed to operate on 117 V and draws a current of 15.0 A when it first starts up. determine the resistance of the armature coil
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