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As we've seen, astronauts measure their mass by measuring the period of oscillation when sitting in a chair connected to a spring. The Body Mass Measurement Device on Skylab, a 1970 space station, had a spring constant of 606 . The empty chair oscillated with a period of 0.830. What is the mass of an astronaut who oscillates with a period of 2.16 when sitting in the chair?
An electron and a proton are each placed at rest in a uniform electric field of magnitude 546 N/C. Compute the speed of each particle 52 ns after being free.
Calculate the induced emf in the conductor and if the total resistance in the conductor is R what is the magnitude of the induced current.
An autographed baseball rolls off a 0.64m high desk and strikes the floor 0.61 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.80 m/s^2.
A compound microscope has an objective lens with a 2.2 cm focal length and an eyepiece with a 5.4 cm focal length. what magnification does the microscope produce
A 3.10-m-long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 73.0 kg construction worker stands at the far end of the beam. What is the magnitude of torque abou..
We can model the eye as a sphere 2.50 in diameter with a thin lens in the front and the retina along the back surface. What is the range of the effective focal length of the lens of the eye for this person? fmin and fmax
A rifle is aimed horizontally at a target 189.71 m away. The bullet hits the target 0.91 inch below the aim point. What was the bullet's speed as it left the barrel
The length of an individual's forearm and hand is 30.0 cm and the mass of an individual's hand and forearm is 1.50 kg. Calculate the moment of inertia of the hand and forearm about a mediolateral axis through their combined COM
A dare devil is shot out of a cannon at 45.0 degrees to the horizontal with an initial speed of 25.0 m/s. A net is positioned a horizontal distance of 50.0 m from the cannon.
A model rocket is fired vertically from rest. It has a net acceleration of 18.5 m/s2. Ignoring air resistance, how high does the rocket travel
A car moves with a constant acceleration of 2.1 m/s2. At a time of 1 s, it is 170 m beyond a mile marker, Find the car's position after the mile marker at time 5 s
A diver releases an air bubble of volume 2.0cm3from a depth of 16m below the surface of a lake, What is the volume of the bubble when it reaches just below the surface of the lake
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