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Q1. An electric force of 4.0 N exists between two objects separated from each other by a distance of r. If the distance is decreased to 0.50 r, compute the magnitude of the force between the two objects.
Q2. If an object weighs 50lbs and it gets hit by a car with a force of 6400N and there's a frictional force of -34N, what is the net force?
The small skydiver, weighing 50N, sinks 1.0m into the snow when her parachute does not open, Determine the work done by the snow in stopping the person
An auto race takes place on a circular track. A car completes one lap in a time of 19.5 s, Find the average angular speed and the radius of the track
A 2.20 H coil with a resistance of 2.18×10^2 ohms is in series with a 1.29×10^3 ohms resistor. What is the peak value of the potential difference across the coil
Quarks carry spin 1/2. Three quarks bind together to make a baryon (such as the proton or neutron); two quarks (or more precisely a quark and an anti-quark) bind together to make a meson (for example the pion or the kaon). Suppose the quarks are i..
A 2.0 kg mass is connected to a spring with a spring constant of 9.0 N/m. What is the period of this simple harmonic motion
An alpha particle (the nucleus of a helium atom, with charge +2e and a mass four times that of a proton), What is the speed of the antiproton when the particles are 1.1nm apart
Upstream of a normal shock in air the pressure is 14.7 psia and the temperature is 528R. Downstream of the shock the air pressure is 76.8 psia. What is the Mach number upstream of the shock
A 2kg ball traveling to the right with a speed of 4 m/s collides with a 4 kg ball traveling to the left with a speed of 2 m/s. The total momentum of the two balls after the collision is what.
What is an angular speed about the center of mass
What is the size of the static friction force on the cabinet when the bed is tilted at 20o? At what angle will the file cabinet begin to slide if the coefficient of static friction of steel on steel is Ms= 0.80 and the coefficient of kinetic frict..
A hunter is standing on flat ground between two vertical cliffs that are directly opposite one another. find the distance (in m) between the cliffs
Light of wavelength 0.50 ?m illuminates a soap film (n = 1.33). What is the minimum thickness of film that will give an interference when the light is incident normally on it
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