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Question1
It has been asserted that a permanent magnet is really just made up of an insulator with fixed positive electrical charges permanently embedded in the north pole of magnet and fixed negative electrical charges permanently embedded in the south pole of magnet.
(a) Do you think this assertion?
(b) Name three observations you made that would offer support for or evidence against this assertion. Cite Activity numbers and describe how each observation supports your conclusion.
Question2
A transverse sinusoidal wave on a string has a period of 10.4 ms and travels in negative x direction with a speed of 45.9 m/s. At t = 0, a particle on the string at x = 0 has a displacement of 1.65 cm with a transverse speed of 0.955 m/s. What is amplitude of the wave? Give Answer in units of m
What is initial phase angle? Give Answer in units of degree
What is the greatest transverse speed of the string? Give Answer in units of m/s
What is wave number? Give Answer in units of m−1
The catapult on an aircraft carrier can take an aircraft from 0 to 85.6 m/s in 12.4 seconds, What is the acceleration of the aircraft when it launches
Calculate the focal length required of glasses to be worn, A pair of eyeglasses are designed to allow a person with a near-point distance of 2.52 m to read a road sign at a distance of 25.2 m.
A car travelling at 120 strikes a tree. The front end of the car compresses and driver comes to rest after travelling 0.900.
The electron in a hydrogen atom is infinitely distant at zero potential energy, What is the nearest principal quantum number in this state
An electron with an initial speed of 4.90×105m/s is brought to rest by an electric field. What was the potential difference that stopped the electron
a high speed cooling fan has a maximum angular speed of 15.0 rad/sec, calculate the angular acceleration when the device goes from idle speed to operational speed
What centripetal force will the ride exert. How far should the stone fall so that the pulley has 6.50 J of kinetic energy.
What is the maximum speed with which a 1200 kg car can round a turn of radius 60.0m on a flat road if the coefficient of friction between tires and road is 0.65.
An isolated conducting sphere has a 13 cm radius. One wire carries a current of 1.0000048 A into it while another wire carries a current of 1 A out of it. How long in seconds would it take for the sphere to enhance in potential by 820 V.
A small sphere with mass 2.60g hangs by a thread between two large parallel vertical plates 5.00cm apart. What potential difference between the plates
Coherent light with wavelength 609 passes through two very narrow slits, and interference pattern is observed on a screen a distance of 3 from the slits.
An experimental measurement has a result 7.95 +- 0.01, and a predicted value of 8.00. What is the percent uncertainty in the measurement
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