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Are there differences in "experimental control" that must be applied if either objective or subjective measures are to assess the workload associated with certain activities.
Question is from Ergonomics How to Design for ease and efficiency 2nd ed
A novice skier, starting from rest, slides down a frictionless 34° incline whose vertical height is 128 m. How fast is she going when she reaches the bottom.
An electron moves to the right with a speed of 0.84c relative to the laboratory frame. Find the speed of the proton relative to the laboratory frame
A 100 W beam of light is shone onto a black body of mass 2 x 10^-3 kilogram for a duration of 10^4 s. Obtain the total energy and momentum absorbed by the black body from the light beam
A 80 kilogram person weighs himself at the north pole and at the equator. Determine which scale reading is higher
Air bags are designed to deploy in 10 ms. Estimate the acceleration of the front surface of the bags as it expands. Express your answer in terms of the acceleration of gravity g
Consider a dust particle of diameter d =1 μ, mass m≈10^-15 kg, and speed ν= 1 mm/s. Calculate the de Broglie wavelength of the particle and compare with the particle's size.
suppose the length L of the uniform bar is 3.00 m and its weight is 230 N. Also, let the block's weight W = 350 N and angle ? = 30°. find the maximum possible distance x before the wire breaks
Porter's Five Forces Model
With respect to the earth, object 1 is moving at speed 0.90c to the right. Determine how fast is object 2 moving with respect to the earth
Generate a first-order widely-linear-moving-average process - load the bivariate wind data of the wind speeds in the East-West direction
A physical pendulum in the form of a planar object moves in simple harmonic motion with a frequency of 0.220 Hz. Determine the moment of inertia of the pendulum
A uniform beam is supported by a cable at one end and force of friction at the other. Cable at least 30 degrees. Length of beam 6m. Friction is .86 and mass is 100kg. Find the minimum X distance we can add 250 kg and the beam not slip from the wall
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