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A body of mass 4 kg is accelerated upon by a constant force, travels a distance of 5 m in the first second and a distance of 2 m in the third second. The force acting on the body is
(A) 2 N
(B) 4 N
(C) 6N
(D) 8N
An electrically charged bullet of mass 0.010 kg leaves thebarrel of a gun traveling parallel to the ground and perpendicularto the Earth's magnetic field at 1.400e+3 m/s. Intheory, what charge could the bullet carry in order to remain at aconstant..
A disk of radius 0.2m and moment of inertia 1.5 kg*m^2 is mounted on a nearly frictionless axle. A string is wrapped tightly around the disk, and you pull on the string with a force of 25 N. After w while the disk has reached an angular speed ..
A nuclear power plant has a maximum steam temperature (Th) of 310 degrees Celsius. It produces 460 MW of electric power in the winter, Find its maximum winter efficiency
A 1.23 kg mass stretches a vertical spring .215m . If the springis stretched an additional /130m and released, how long does ittake to reach the new equalibrium position?
A performer seated on a trapeze is swinging back and forth with a period of 9.28 s. what will be the new period of the system
The density of water is 1.0 x 10^3 kg/m3. Calculate the gauge pressure in the pipe at this location.
Two objects attract each other gravitationally with a force of 2.3×10-10 when they are 0.65 apart. Their total mass is 5.0 . Find out their individual masses.
A fly appears to be upside down and 3 times its actual size when viewed through a converging lens with a focal length of 14 cm. How far is the fly from the lens
Using a wheel and axle machine, a force of 100 Newton applied to the rim of a wheel can lift a load of 80 kilogram. Obtain the actual mechanical advantage and the efficiency of the machine
A 0.27-m-thick sheet of ice covers a lake. The air temperature at the ice surface is -10°C. In five minutes, the ice thickens by a small amount. Find the number of millimeters by which the ice thickens
In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20 C, How much energy might you lose in one week
A step-up transformer is connected to a generator that is delivering 139 V and 110 A. what voltage is across the secondary
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