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An electric motor rotating a workshop grinding wheel at a rate of 1.01 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.50 rad/s2.
(a) How long does it take for the grinding wheel to stop?
(b) Through how many radians has the wheel turned during the interval found in (a)?
A dinoflagellate takes 5.2 s to travel 0.6 mm. Approximate a dinoflagellate as a sphere of radius 35.0 µm (ignoring the flagellum). What is the drag force on the dinoflagellate in seawater of viscosity 0.0009 Pa · s?
12-gauge copper wire has a radius of 1.03×10^?3 m. How much current will pass through the wire if a potential difference of 9.00 V is applied across it
An unstable particle with a mass equal to 3.34 10-27 kg is initially at rest. Find the masses of the fragments
A force does +130J of work while it acts on a moving object and its direction is in the same direction as the object's displacement. How much work does this force do as the angle between it and the object's displacement is 56°.
The Superconducting magnet for the experimental MRI studies at a laboratory is a 1 m long solenoid of 60 cm diameter, What is the inductance of the magnet?
The temperature of human is normally 37.0 degree Celsius. (a) at what wavelength will a human radiate the maximum radiation? (b) estimate the total power radiated by a person of medium build(assume a cylindrical human of height 1.80 meters and rad..
Ten meter long steel railroad rails are laid end to end, with no space between, on a hot day when the temperature is 115.°F. How much space now exists between each rail
A ray of light makes an angle of 25 degrees with the normal to a plane mirror. through what angle is the reflected ray rotated
A beam of light propagating in glass (n=1.52) is incident on an interface with an unknown material. When the incident angle is exactly 62° the all of the light is reflected at this interface, but for smaller angles some light is transmitted. What is ..
The mass then travels vertically and it takes 1.10 s for the mass to reach the top of its trajectory. Determine the spring constant, in N/m. (Use g=9.81 m/s2). Assume that the time required for the spring to reach its full extension is negligible.
Two small beads having positive charges 18q and q are fixed at the opposite ends of a horizontal insulating rod, extending from the origin (the location of the larger charge) to the point x = d. As, a third small charged bead is free to slide on t..
A car of mass 1.00×103kg and a truck of mass 4.10×103kg run into one another due to ice on the road. Calculate the size of the force on the car due to the truck at that time
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