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The energy flow per unit time per unit area (S) of an electromagnetic wave has an average value of 598 mW/m2. The wave is incident upon a rectangular area, 1.5 meter by 2.0 meter, at right angles. Determine the total energy that traverses the area in a time interval of one minute?
Starting from rest, a basketball rolls from the top of a hill to the bottom, reaching a translational speed of 3.60 m/s. Ignore frictional losses. What is the height of the hill?
FA 2.0%u03BCC charge and a 2.9%u03BCC charge are 11.0cm apart. Find a point where the electric field is zero
A 250 ohm resistor is connected in series with a 4.80 uF capacitor. The voltage across the capacitor is v_{C}=(7.60 V)sin [(120 rad/s}) t ]. Determine the capacitive reactance of the capacitor.
Four point charges of magnitude 4.5 µC are at the corners of a square of side 2 meter. Determine the electrostatic potential energy if all the charges are negative
A particle is acted on by two torques about the origin: τ1 has magnitude 10 N m and pointsin the direction of increasing x, and τ2 has a magnitude of 12N m and points in the direction of decreasing y.What are the magnitude and direction of dL/dt, ..
Find the first and second derivative with respect to x of f(x) = (exp(x/a)-exp(-x/a))/2, where exp(x)=e^x is the exponential function.
The distance between an object and its image formed by a diverging lens is 4.70 centimeter. The focal length of the lens is -2.40 centimeter. Evaluate what is the object distance
A 70kg hiker climbs to the second base camp on Nanga Parbat in Pakistan, at an altitude of 3900m, starting from the first base camp at 2200m. The climb is made in 4.7hr. Calclate the following A)the work done against gravity B) the average power outp..
Derive an equation for radius r of circular path that the electrons follow in terms of the magnetic field B, the electrons’ velocity v, charge e, and mass m. You may assume that the electrons move at right angles to the magnetic field.
A girl is standing at the edge of a cliff 145 m above the ground. She reaches out over the edge of the cliff and throws a rock straight upward with a speed of 6.79 m/s. How long does it take the rock to hit the ground
An equilateral glass prism is to be designed so that a light beam entering the prism perpendicular to the first face will be totally internally reflected once off the second face
A 1.80-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 2.30sin(2?t), Find the angular frequency of the driven system
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