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Question: A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 584 N. As the elevator later stops, the scale reading is 398 N. Assume the magnitude of the acceleration is the same during starting and stopping.
(a) Determine the weight of the person. N
(b) Determine the person's mass. kg
(c) Determine the magnitude of acceleration of the elevator. m/s2
A fighter jet is launched from an aircraft carrier with the aid ofits own engines and a steam-powered catapult. The thrust of itsengines is 2.10*105 N. In being launched from rest itmoves through a distance of 87 m and has a kinetic energy of4.50*1..
A 50,000 kilogram locomotive, with steel wheels, is traveling at 9.0 m/s on steel rails when its engine and brakes both fail. Obtain how far will the locomotive roll before it comes to a stop
a uniform rod of mass 100 g and length 50.0 cm rotates in a horizontal plane about a fixed vertical frictionless pin
A block of ice of mass 3.70kg is placed against a horizontal spring that has force constant k = 230N/m and is compressed a distance 2.70×10?2m. What is the speed of the block after it leaves the spring
An electron is released to accelerate from point 1 to point 2 in a potential region. The electric potentials at these points are V1 = -35 V and V2 = +200 V. Calculate the change in potential energy of this electron
A 0.178 kg ball is released from rest at the top of a 57.9 m tall building. Calculate the de Broglie wavelength of the ball
Assume light with a wavelength of 660 nanometers in a vacuum is incident upon fused quartz, which has an index of refraction of 1.36. Obtain the wavelength of this light be inside the quartz
A steel wire in a piano has a length of 0.7000 m and a mass of 4.100 x 10-3 kg. To what tension must this wire be stretched so that the fundamental vibration corresponds to middle C
Suppose the acceleration, a of a particle moving in a circle depends on the radius r and uniform velocity v, as in the equation a=r^xv^y. Determine the true form of dependence.
The center of gravity of a 5 kg lower leg is 18 cm from the knee. When pivoted at the knee and allowed to swing, Find the moment of inertia of the lower leg
A proton enters a uniform electric field by an initial velocity of 6x105 m/s in the x direction. The field has strength of 900 N/C, and is in the -y-direction, pointing from one plate to another as shown. If the plates are 10 cm long, how far is the ..
What would be the potential difference VC - VB across the thin resistor if the battery emf is 4.00 volts? Suppose that the electric field in the thick wires is very small (so that the potential differences along the thick wires are negligible)
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