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Two wires of the same cross-sectional area and length, but made of different materials, are connected in series. The total length of the two cables is 2.50 m, and the diameter of each wire is 1.8 mm. A potential difference of 4.50 V results in a current of 20.0 A. If one of the wires is made of copper, what is the resistivity of the other material?
Ideally, when a thermometer is used to measure the temperature of an object, the temperature of the object itself should not change. What was the temperature of the water before the insertion of the thermometer
What is the pressure at the bottom of a swimming pool which is 12ft deep and contains fresh water.
A 2.0-C charge moves with a velocity of (2.0i + 4.0j + 6.0k) m/s and experiences a magnetic force of (4.0i - 20j + 12k) N. The x component of the magnetic field is equal to zero. Find out the y component of the magnetic field.
Two lenses, one converging with a focal length of 20.0cm and one diverging with a focal length of -12.0cm, Find the final image from the second lens. Follow the sign conventions
If a 4-engine jet accelerates down the runway at 5m/s2 and 3 of the jet engines fail, how much acceleration will the other one produce.
A 65-kg woman cheats on her diet and eats a 612-Calorie (612 kcal) jelly doughnut for breakfast. If the human body is only 21% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakf..
The nonconducting spherical shell is replaced with a thin metal spherical shell of diameter 8 cm and a charge of 1.00, What is the net electric field at 50 cm on the positive x axis
A bug of mass 1.0 grams is caught up in the center of an oscillating spider web. show that this motion is generated by hooke's law force, f=-kx
he 5.0- block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.55 and the kinetic coefficient is 0.3, illustrate what is the minimum value of needed to move the two blocks?
What is a limiting angle of resolution
What is the least (non-zero) thickness for the air layer between two flat, and parallel, glass surfaces if the glass is to appear dark while 640 nm light is incident normally? What if the glass is to appear bright.
A concave shaving mirror has a focal length of 95 cm. find the image position of a cologne bottle placed in front of the mirror at a distance of 165cm. Calculate the magnification of the image. Is the image real or virtual? Is the image inverted o..
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