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A motor (mass of 180kg) sits on a horizontal 2.25 m masslessplank. The motor is 1.00 m from one end of the plank. Find the supporting force applied at each end of the plank to keep thesystem in equilibrium. You will need to use the first andsecond conditions of equilibrium.
A standard 100 W (120 V) lightbulb contains a 9.40 cm-long tungsten filament. The high-temperature resistivity of tungsten is 9.0*10^-7Om. What is the diameter of the filament?
The electric field caused by a certain point charge has a magnitude of 6800N/C at a distance of 0.200m from the charge
a 2.9-kg cart is rolling along a frictionless horizontal track towards a 1.6-kg cart that is held initially at rest.
The force on an object is given by F(x) = -2(x^2)(e^x), where F is in newtons, and x is in meters. What is the change in the object's potential energy
The amplitude of a lightly damped oscillator decreases by 1.7% during each cycle. What percentage of the mechanical energy of the oscillator is lost
while taking photographs in death valley on a day when the temperature is 59.0degc bill hiker finds that a certain
A cannon is launched at an angle of 45.00 and the cannon ball lands 301 m away. What was the velocity of the cannon ball
A helium-neon laser (? = 632.8 nm) is used to calibrate a diffraction grating. If the first-order maximum occurs at 21.5°, what is the spacing between adjacent grooves in the grating? (In this problem, assume that the light is incident normally on th..
In the hydraulic system shown in the figure , the piston on the left has a diameter of 4.5 and a mass of 1.8, what is the height difference between the two pistons
q1. assume acceleration is constant during each time interval but not necessarily the same in both intervals what
1 two parallel long wires carry the same current and repel each other with a force f.per unit length. if both these
assuming no heat loss to the surrounding environment determine the minimum duration of time necessary for a 100 w
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