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A 230 kilogram crate rests on a surface that is inclined above the horizontal at an angle of 19.4 degree. A horizontal force (magnitude = 516 Newton and parallel to the ground, not the incline) is needed to start the crate moving down the incline. Find coefficient of static friction between crate and incline?
When responding to sound, the human eardrum vibrates about its equilibrium position. Assume an eardrum is vibrating with an amplitude of 6.15*10-7 m and a maximum speed of 2.67*10-3 m/s. What is the frequency (in Hz) of the eardrum's vibration?
conducting objects can be chrome-plated by immersing them in an electrolytic bath having positive chromium ions in
The naturally occurring charge on the ground on a fine day out in the open country is -1.00 nC/m2. Calculate the electric potential at this height
X-rays are scattered from electrons in a carbon target. The measured wavelength shift is 0.00099 nm. Calculate the scattering angle
An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.29 × 10-6 T. What is the intensity S of the wave
A geothermal power plant uses geothermal water extracted at 160oC at a rate of 440 kg/s as the heat source and produces 22 MW of net power.
suppose that you want to take a photograph of yourself as you look at your image in a mirror 3.8 m away.for what
if a blue filter is placed over a light source aperture so that the incident rays are blue and these rays pass through
Water (? = 1.00E-3 Pa*s) is flowing through a horizontal pipe with a volume flow rate of 0.0129 m3/s. Calculate the radius of the horizontal pipe
The drawing shows two copper [? = 17 × 10-6 (C°)-1] rods of different lengths mounted on one side of an immovable wall. What change in the gap occurs when the rods are heated to 77 °C
An air-track glider attached to a spring oscillates between the 10.0 {rm cm} mark and the 58.0 {rm cm} mark on the track. The glider completes 15.0 oscillations in 35.0 {rm s}. What are the (a) period, (b) frequency, (c) amplitude, and (d) highest..
question apparent weight a 550-n physics student stands on a bathroom scale in an 850-kg including the student elevator
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