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Wiedemann-Franz law:
The ratio of thermal conductivity of a particular pure metal to its electrical conductivity is approximately constant for any given temperature. This law holds quite well except at low temperatures.
Q. A 4.5cm needle is placed 12cm away from a convex mirror of focal length 15cm. Give the location of the image and the magnification. Describe what happens as the needle is moved
In the movie The Shooter starring Mark Wahlberg, it is claimed that coriolis forces need to be taken into consideration when taking a shot at a target 4 kilometres away. To test
What is force?
A spacecraft is moving relative to the earth An observer on earth finds that , according to her clock 3601s elapse between 1pm and 2pm on the spacecraft''s clock. what is the space
John is traveling north at 20 meters/second and his friend Betty is traveling south at 20 meters/second. If north is the positive direction, what are John and Betty''s speeds?
A 0.15 kg glider is moving to the right on frictionless horizontal air track with speed of 0.8 m\s. It has a head on collision with 0.3 kg glider that is moving to the left with a
On the way to school, Jamal realizes that he left his physics homework at house. His car was initially heading north at 24.0 m/s. It takes him 35.5 s to turn his car around and hea
A surveyor is using a magnetic compass 7.1 m below a power line in which there is a steady current of 120A. What is the magnetic field in microteslas at the site of the compass due
A hollow sphere of radius R lies on a smooth surface. It is pulled by a horizontal force acting tangentially from the highest point. Find the distance travelled by the sphere durin
One of the Maxwell's e-m equations involves the curl of the electric field. Write down the equation and mention the law of electromagnetism which is shown by the equation.
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