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-Your company's main competitor has built an extremely efficient transformer and is trying to market it saying that the new transformer is able to step up energy. Do you agree with their statement? What would you say?
-Power transmission lines generally operate and high voltage and low current. Discuss the reason for this choice.
-If visible light and radio waves are both examples of electromagnetic waves, why can't we see radio waves?
-Why spy cameras in satellites and high-altitude aircraft are designed with large apertures?
A cube 21cm on each side contains 3.5g of helium at 20 \; ^\circ \rm C. 1400J of heat energy are transferred to this gas.
1. provide at least three reasons for believing in the accuracy and inaccuracy of sensory information.2. identify and
a 42 g ice cube at its melting point is dropped into an insulated container of liquid nitrogen. how much nitrogen
A series RLC circuit has R= 50, L= 2.7 H, and C= 52 nF. It is connected to an AC voltage source with an rms amplitude of 12 V, find the average power dissipated by the circuit
Quadrupole moments in the shell model
sketch the normal and shear stresses that are nonzero on this element below. The orientation of your vector will be graded.
A solenoid with a cross-sectional area of 1.88×10^-3 m2 is 0.760m long and has 445 turns per meter. Find the magnitude of induced emf in this solenoid
a projectile is shot from the edge of a cliff h=125m aboveground level with an initial speed of v0=155m/s at an angle of 37.0degrees with the horizontal. determine the time taken by the projectile to hit point Pat ground level
A 1000-kg car is travelling west at 17.0 m/s toward an intersection. What is the angle of their velocity after the collision relative to the east direction
As Achilles approaches Boagrius, Boagrius throws his spear at Achilles. Find what was the average force acting on the 4.5 kg spear
How would your answer to Exercise change if the potential difference was caused by a point charge rather than by oppositely charged parallel plates?
Europa, one of the moons of Jupiter, was discovered by Galileo in 1610. Europa has a circular orbit of radius 6.708 105 km and period 3.551 days. Find the mass of Jupiter
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