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In an EM wave traveling west, the B field oscillates vertically and has a frequency of 87.0 kHz and an rms strength of 6.80×10?9 T. What is the frequency and rms strength of electric field?
An object is launched with an initial velocity of 8.0 m/s to the horizontal from 327cm above the ground level. What is the final speed of the object
Blood with density 1.06 g/cm^3 and 10-kPa gauge pressure flows through an artery at 27cm/s. What fraction of the artery's area is obstructed
Two metal rods of equal length-one aluminum, the other stainless steel-are connected in parallel with a temperature of 24.0?C at one end, by what factor does the rate of heat flow change
A 55.1-kg ice skater is moving at 4.00 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. Determine the force exerted by the horizontal rope on her arms
A block of weight 36.1 N is hanging from a rope. The tension in the rope is 48.5 N, pulling upward on the block. find the magnitude and direction of the acceleration of the block
If 20 grams of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temerature.
A 0.500 kg football is thrown toward the east with a speed of 10.0 m/s. A stationary receiver catches the ball and brings it to rest in 0.020 s. What is the average force exerted on the receiver
Explain how fast will he be moving backward just after releasing the ball?
A steel piano wire 1.35 m long has a cross- sectional area of 0.00751 cm2. When under a tension of 68.9 N, how much does it stretch
A +3.07 nC point charge is placed at one corner of a square (1.90 m on a side), and a -6.51 nC charge is placed on the corner diagonally opposite. What is the magnitude of the electric field at either of the other two corners?
A Helium-Neon laser (?=633 nm) illuminates a diffraction grating. What is the spacing between the slits of the grating
A 0.20-kg object is attached to the end of an ideal horizontal spring that has a spring constant of 120 N/m. compute the amplitude A of the motion
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