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A force is given by F(x)=5x^3 (in the x-direction) acts on a 1kg mass moving on a frictionless surface. The mass moves from x=2m to x=6m.
a) How much work is done by the force? and
b) If the mass has a speed of 2m/s at x=2m what is the speed at 6m.
Does papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae before the full force of ventricular contractions sends blood against the AV valve flaps.
If the translation rms speed of the water vapor molecules in air is 703 m/s, what is the translational rms speed of the carbon dioxide molecules in the same air? Both gases are at the same temperature.
which is basically a diskshaped grindstone of mass 1.2 kg and radius 7.30 cm which operates at 700 rev/min. When the power is shut off, you time the grindstone and find out it takes 39.0 s for it to stop rotating.
A certain EM wave has a wavelength of 4e-7 m and a speed of 2.5e8 m/s in a particular material (not a vacuum). What is the wavelength of this wave in a vacuum
A horizontal wire of length 0.59 m, carrying a current of 8.1 A, is placed in a uniform external magnetic field. When the wire is horizontal, it experiences no magnetic force.
The radius of the Earths very nearly circular orbit around the sun is 1.5x10^11 m, find the magnitude of the earth velocity as it travels around the sun
A second fragment, who's mass is 3.4 kg, moves away from the point of explosion with a speed of 418 m/s along the negative x axis. What is the speed of the third fragment? Ignore effects due to gravity.
The specific heat of a 98 g block of material is to be determined. The block is placed in a 25 g copper calorimeter that also holds 60 g of water. Determine the specific heat of the block
A certain car is capable of accelerating at a rate of 0.52 m/s2. How long does it take for this car to go from a speed of 27 mi/h to the speed of 33mi/h.
A coaxial cable consists of a cylindrical metal sheath of radius b=3.5cm surrounding a conducting wire with outer radius a=.6cm
q1. a heavy piece of hanging sculpture is suspended by a 146.0 cm long 8.03 gm wire. when the wind blows hard the wire
An olympic skier moving at 20.0 m/s down a 30.0 Degrees slope encounters a region of wet snow and slides 145 m before coming to a halt
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