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Two wires are the same diameter but wire A is three times the length of wire B. What is the ratio of the heat produced in A to that produced in B if the same potential is placed across the ends of the two wires? Show your calculations.
An adult exerts a horizontal force on a sewing that is suspended by a rope of length L, holding it at an angle x with the vertical. The child in the swing has a weight W and dimensions that are negligible compared to L.
A particle with charge of 4 microcoloumbs is at the origin, another identical particle is placed 2 m from the origin on thepositive x-axis and another 2 m on the positive y-axis. Provide asketch with vectors representing the forces on the charge a..
Two masses M1=10 kilogram and M2= 8 kilogram are accelerated by a force of 60 Newton at an angle of 53o above the horizontal. Find the tension in the rope between the masses
A uniform magnetic field perpendicular to its plane is turned onand increases to 0.25 T during an interval of 1.0 s. What average voltage is induced in thecoil?
Synchronous communication satellites are put into orbit at a distance of 42300 kilometer from earth. determine the arc length that separates the two satellites in orbit
"A plane, diving with constant speed at an angle of 54.0 degrees with the vertical, releases a projectile at an altitude of 770m. what is the speed of a aircraft
What is the temperature of the outside air. What are the components of the displacement vector from camp to summit? What is its magnitude? select the x axis east, y axis north, and z axis up.
When an object is moving with uniform circular motion, which of the following statements is correct for the tangential velocity? It acts towards the center, It acts away from the center, It is perpendicular to the plane of the circle, or It is per..
A crude model of the human vocal tract treats it as a pipe closed at one end.Find the effective length of the vocal tract in a person whose fundamental tone is 550Hz . Sound speed in air at body temperature is 354 m/s.
A runner is running the first heat of a100 m race at a velocity of 6.9 m/s in an easterly direction. What is the relative velocity of the runner to the wind
seven charged particles are fixed in place to form a square with an edge length of 3.8 cm. How much work must we do to bring a particle of charge
A lens is coated with material of indexof refraction 1.38. What thickness of coating should be used to give maximum transmission
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