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Playing near a road construction site, a child falls over a barrier and down onto a dirt slope that is angled downward at 42° to the horizontal. As the child slides down the slope, he has an acceleration that has a magnitude of 0.50 m/s2 up the slope. What is the coefficient of kinetic friction between the child and the slope?
The rms electric field of an electromagnetic wave increases from 286 to 858 N/C.find the wave intensities for the two values of the electric field.
A motorcycle has a constant speed of 21.0 m/s as it passes over the top of a hill whose radius of curvature is 132 m. The mass of the motorcycle and driver is 343 kg. Determine the magnitude of the normal force that acts on the cycle.
One mole of an ideal gas does 1408 J of work on the surroundings as it expands isother- mally to a final pressure of 1.6 atm and vol- ume of 29L. Find out the initial volume.
An average temperature of the rest of the universe
Two consecutive frequencies are 500 Hz and 540 Hz. ( Stringed instrument; closed-closed) Calculate the fundamental frequency
A cylindrical 98.50 ? resistor is made from a coil of copper wire whose total mass is 74.0 g, What is the diameter and lenght of the wire
A charge q= +5.80 uC is located in the center of a regular tetrahedron, Find the total electric flux through the tetrahedron, the electic flux through one face of the tetrahedron
Find out parametric equations for the shell's trajectory relative to the coordinate system. What is the maximum distance at which these headlights could be resolved as separate points of light on a photograph taken with a camera whose aperture has a ..
A 8 kg box slides d = 4.2m down the frictionless ramp, after that collides with a spring whose spring constant is 250 N/m. angle is 30 degrees.
what is the electric force between the proton and electron inside of a hydrogen atom? What must the speed of the electron be? Radius=0.47 x 10^-9.
Two mirrors meet at a 127° angle. If light rays strike one mirror at 40° as shown, at what angle ? do they leave the second mirror.
Billy has a bucket that has a mass of 150 g, in which he put 150 g of fresh water. He has tied 150-cm of string to the handle of the bucket.
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