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The drawing shows a uniform electric field that points in the negative y direction; the magnitude of the field is 2900 N/C. Determine the electric potewbai difference (a) VB - VA between points A and B, (b) VC - VB between points B and C, and (c) VA - VC between points C and A.
If the work function for a metal is 1.8 eV, what would be the stopping potential for light having a wavelength of 400 nm? What would be the maximum velocity of the emitted photoelectrons at the metal's surface?
Hooke's Law states that the force needed to stretch a spring is proportional to the amount the spring is stretched. If 10.0 N of force stretches a spring 4.00cm
A child slides down a slide with a 24 degree incline, and at the bottom her speed is precisely two-fifths what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.
Rodney weighs 160 lb. He sits in a comfortable chair in which 90% of his weight is supported by his rear end and upper thighs and 10% by his feet, what is the average pressure over this area
A simple harmonic oscillator has spring constant k = 6.6N/m , amplitude A = 12cm , and maximum speed 4.6m/s. What's the oscillator's speed when it's at x = 5.8cm
A 70.0 kilogram man throws a 0.0420 kilogram snowball forward with a ground speed of 34.0 m/s. Determine the velocities of the two people after the snowball is exchanged
A 2.4 mm-diameter copper wire carries a 30 A current (uniform across its cross section). Determine the magnetic field at the surface of the wire
At a soft drink bottling plant, a horizontal section of pipe carrying citric acid in liquid form goes from a cross-sectional area of 8.00 cm2, determine the liquid flow speed and the liquid pressure
A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. how fast is the student going at the bottom of the slide
illustrate what is the magnitude of the acceleration of the box and hanging mass.
When two point charges are a distance R apart, their potential energy is -2.00 J. How far (in terms of R) should they be from each other
The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.20 with the floor. find in how short a distance the train can be stopped at constant acceleration without causing the crates to slide over the f..
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