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Q1. A 35.0- battery with negligible internal resistance, a 90.0- resistor, and a 1.75 inductor with negligible resistance are all connected in series with an open switch. The switch is suddenly closed. How long after closing switch would the current through an inductor reach one-half of its maximum value?
Q2. A 79.0 kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, the vertical height of 4.40m.What is the work completed on the man by the gravitational force and the escalator?
Consider a cube of sides a = 4.60 m, as shown in the diagram below. Suppose that an electric field is present and is given by E = bxn, Calculate the magnitude of the total charge within the cube
What is tension in the wire
A 0.178 kg ball is released from rest at the top of a 57.9 m tall building. Calculate the de Broglie wavelength of the ball
An athlete swings a 4.50-kg ball horizontally on the end of a rope. The ball moves in a circle of radius 1.000 m at an angular speed of 0.540 rev/s. What is the tangential speed of the ball
Calculate the approximate volume of a nucleus of uranium, 235/92 U and Calculate the approximate radius of a nucleus of uranium, 235/92 U
A block with mass m = 4.6 kg is attached to two springs with spring constants kleft = 37 N/m and kright = 51 N/m. What is the effective spring constant of the two springs
When light with a wavelength of 228 nm is incident on a certain metal surface, Determine the wavelength of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface
An electron with an initial speed of 4.00×105m/sis brought to rest by an electric field, What was the initial kinetic energy of the electron, in electron volts
While a certain rubber band is stretched a distance x, it exerts a restoring force of magnitude F=ax+bx^2, where a and b are constants. The work completed in stretching this rubber band from x=0 to x=L is what.
Suppose that the dipole moment associated with an iron atom of an iron bar is 2.7 x 10-23 J/T. Assume that all the atoms in the bar, What is the dipole moment of the bar
A 0.5 kg mass moves on a plane in a circular path of circumference 1m at a speed of 1.32 m/s. What is the angular momentum of this mass
A student stands on a platform that is rotating without friction at 1.2 rev/s. His arms are outstretched and he holds a brick in each hand. what is the new angular speed of the system
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