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Determine the amount of work required for a 85.0-kg person to climb one flight of stairs that are 2.50 meters high.
a. 25 J
b. 213 J
c. 833J
d. 2080J
What is the magnitude of the single straight-line displacement
Two small metallic spheres, each of mass m = 0.45 g, are suspended as pendulums by light strings from a common point. what is the magnitude of the charge on each sphere
Suppose 1400 J of heat are added to 3.4 molof argon gas at a constant pressure of 120 kPa. Calculate the change in volume of the gas
In the Bohr model of the hydrogen atom, an electron in the9thexcited state moves at a speed of2.70104m/s in a circular path of radius4.2810-9m. What is the effective current associated with this orbiting electron?
A 700 MeV photon scatters off a free electron such that the scattering angle of the photon is twice the scattering angle of electron
Suppose a 1400-kg elevator car is lifted a distance 36 m by its cable at a constant speed, assuming the frictional force on the elevator has a constant value of 95 N. Calculate the work done on the elevator by its cable, in joules.
A loudspeaker of mass 24.0 {rm kg} is suspended a distance of h = 1.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.70 {rm m}.
At a certain distance from a point charge, the potential and electric field magnitude due to that charge are 4.98 V and 12.0 V/m, respectively. What is the magnitude of the charge
A tortoise can run with a speed of 11.7 cm/s, and a hare can run 18.1 times as fast. How long does the race take
In a particle accelerator, a proton reaches an acceleration of 9.0 × 1013 m/s2. The mass of a proton is 1.7 × 10 -27 kg. What is the force on the proton?
Find the safe load that a column (pinned ends) 24 ft long, consisting of a 12- by 4-in web plate, four L6 x 4 x j sections, and two 13- by f-in cover plates.
consider the earth and a cloud layer 825 m above the earth to be the plates of a parallel-plate capacitor. if the cloud
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