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A capacitor with a dielectric inserted is connected to a battery. The dielectric constant is 3.4. The energy density is 35 micro-joules/m3. The battery is then disconnected and the dielectric is removed. What is the energy density now in micro-joules/m3?
An 70 box of oranges is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 0.90 each second. The push force has a horizontal component of 20 and a vertical component of 25 downward. Calculate the coefficient of k..
A rocket of total mass 3180 kg is traveling in outer space with a velocity of 115 m/s toward the Sun. how much mass must be expelled
A circular loop of wire with a radius of 0.8cm carries a current of 6 A. Determine the magnitude of the torque that is being exerted on the loop.
1. List three practical examples from industry in which coplanar concurrent forces in equilibrium are involved. Why is the study of forces in equilibrium (static) so important to construction engineering?
Four resistors are connected to a battery with a terminal voltage of 15 V, as shown in figure. Determine the power delivered to R2. (R1 = 20 ohm;, R2 = 45 ohm)
A heating element in a stove is designed to dissipate 3380 W of heat when it is connected to 200 V. Assuming that the resistance is constant, Calculate the power the heating element dissipates
a banked circular highway curve is designed for traffic moving at 55 kmh. the radius of the curve is 207 m. traffic is
A physicist trying to demonstrate destructive interference stands 2.7m directly in front of a speaker. A second speaker produces identical (coherent) 600Hz tones.
If he kicks the ball with an initial velocity of 26 m/s at an angle of 40? above the field, and the field goal cross-bar is 3 meters high, will he make the field goal and why?
does the level of social responsibility exhibited by starbucks have any effect on how other coffee retailers are
calculate the number of moles in the 2.00 L volume of air in the lungs of the avg person. (Air=37.0 degree Celcius)
a solid conducting sphere of radius 2.00 cm has a charge of 8.60 microc. a conducting spherical shell of inner radius
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