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an air wedge is formed between two glass plates separated at one end by a very fine wire. When the wedge is illuminated from above by 664 nm light, 13 dark fringes are observed. the count here includes the dark fringe at contact point. calculate the radius of the wire. answer in micometers.
How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.41 105 N/C at a point 8.60 cm from the center of the sphere
find the potential difference across the capacitor. A conductor consists of a circular loop of radius R and two straight, long sections. The wire lies in the plane of the paper and carries a current I.
A square copper plate has a circular hole in its center. Each side of the plate is 23.52 cm, and the radius of the circular hole is 7.827 cm
A 2-slit experiment is performed with light of wavelength 589nm. Fringes are measured on a screen 1.50m away from the slits, What is the separation between the slit
It is 156 cm from your eyes to your toes. You're standing 212 cm in front of a tall mirror. How far is it from your eyes to the image of your toes
cart is propelled over an xy plane with acceleration components ax = 4.5 m/s2, what is the velocity of the cart when it reaches its greatest y coordinate
A straight 2.06 -mm-diameter copper wire can just 'float' horizontally in air because of the force of the Earth's magnetic field B, What current I does the wire carry
A particle of charge +15 µC and mass 2.00 10-5 kg is released from rest in a region where there is a constant electric field of +280 N/C
A racquet ball with mass m = 0.237 kg is moving toward the wall at v = 12 m/s and at an angle of ? = 30° with respect to the horizontal. What is the change in kinetic energy of the racquet ball
The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.10 . At this new distance, the speed of the block is observed to be 3.50. Explain by how much work was done by the person who pulled on the cor..
A uniform rod of mass m and length l is kept vertical with the lower end clamped. What wil be the linear speed of the free end at this instant
A 2.10 x 10^3 kg car starts from rest at the top of a 4.70 m long driveway that is inclined at 25° with the horizontal. If an average friction force of 4.0 x10^3 N impedes motion, find out the speed of the car at the bottom of the driveway.
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