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A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 598 N. As the elevator later stops, the scale reading is 392 N. Assume the magnitude of the acceleration is the same during starting and stopping.
(a) Determine the weight of the person.
(b) Determine the person's mass.
(c) Determine the magnitude of acceleration of the elevator.
Newton's second law could be stated either as , or as force equals time rate of change of linear momentum. For simple rotational motion the corresponding law is stated as , or torque equals time rate of change of angular momentum.
Two square metal plates are placed parallel to each other, separated by a distance d= 2.04 cm. The plates have sides of length L = 0.580 m. One of the plates has charge Q= + 1.86×10-6 C, while the other plate has charge -Q. Calculate the magnitude..
A single slit with width 820 nm is illuminated with light of wavelength 555 nm. How many minima occur in the angular range from ? = -26o to ? = 26o?
Jimmy has caught two fish in Yellow Creek. He has tied the line holding the 3.0 kg steelhead trout to the tail of the 1.5 kg carp. To show the fish to a friend, he lifts upward on the carp with a force of 60 N. Draw a free-body diagram for the carp. ..
a helicopters velocity is given as vt -2t100ms. determine the position and acceleration functions given that x0 9m.
An ideal gas at 13.6 °C and a pressure of 1.41 x 105 Pa occupies a volume of 3.90 m3. How many moles of gas are present
An electron in a hydrogen atom makes a transition from the n = 5 energy stage to the ground state (n=1). What is the frequency of the emitted photon
A negative charge of -0.525%u03BCC exerts an upward 0.205N force on an unknown charge 0.310m directly below it. What is the unknown charge in microcoulombs
The isotope 210Po eventually decays after two transitions to stable 206Pb. Polonium was the isotope that was used to kill the former Russian KGB agent Alexander Litvinenko in November of 2006.
a. a thin rod of length 9.2 m and mass 16 kg is supported at a 31 degrees incline. one support is 2.4 m and the other
Copper has 8.5×1028 electrons per cubic meter. How many electrons are there in a 25.0 cm length of 12-gauge copper wire, what is the average drift speed of the electrons along the wire
several students are riding in bumper cars at an amusement park. the combined mass ofcar a and its occupant is 250 kg.
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