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In a Wheatstone bridge PQRS, a galvanometer is connected among Q and S and a voltage source between P and R.
An unknown resistor Rx is connected among P and Q.
When the bridge is balanced, the resistance among Q and R is 200Ω, that between R and S is 10Ω and that among S and P is 150Ω.
Calculate the value of Rx .
A 1200-kg cannon is placed at rest on an ice rink. A 95.0-kg cannonball is shot from the cannon. If the cannon recoils at a speed of 6.80 m/s. What is the speed of the canno
Write the mathematical expression for the refractive index in terms of A and D for a prism, explain the symbols. Mention any two factors on which lateral shift depends.
The radioisotope 222 84 Po undergoes alpha decay to form an isotope of lead (lead has atomic number 82). Verify what the mass number of that isotope must be by writing a nuc
Fizeau method (A. Fizeau, 1851): One of the first really relativistic experiments intended to calculate the speed of light. Light is flow through a spinning cogwheel driven th
In the equal distance method of a deflection magnetometer, the deflections produced by two bar magnets are 30 o and 60 o . Determine the ratio of their magnetic moments?
what is the significne of electric field?
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What is magnetic moment of a bar magnet 1. When a bar magnet of pole strength (m) and length (2l) is suspended freely in air,it always turns along the magnetic north (N) and S
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What is the change in temperature of 2.2 kg of the following substances if 8.5 x 10 3 J of thermal energy is added to each of the substances? a. ice b. Water c. Alumi
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