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A potential difference is applied between the electrodes in a gas discharge tube. In 2.0 s, 3.1 x 1016 electrons and 1.1 x 1016 singly charged positive ions move in opposite directions through a surface perpendicular to the length of the tube. What is the current in the tube?
Two radio antennas are separated by 2.00 m. Both broadcast identical 750MHz waves. If you walk around the antennas in a circle of radius 10.00 m, how many maxima will you detect.
Find out kinetic energy of the merry-go-round
Find out the maximum distance d (along the ladder) that the monkey can climb up the ladder before rope breaks.
The area of a typical eardrum is about 5.0 × 10?5 m2. Calculate the sound power incident on an eardrum at the threshold of pain
A 1500kg car skids to a halt on a wet road where coefficient of friction = 0.46. How fast was car traveling if it leaves 68m long skid marks.
A block of wood has a density of 0.55g/cm^3 and mass of 2,500 g. it floats in a container of oil (the oil%u2019s density is 0.85 g/cm^3). What volume of oil does the wood displace
Two identical tiny spheres carrying the same charge are 1.0m apartcenter to center in vacuum and experience an electrical repulsionof 1N. what is their charge? and find the ratio of the electrostatic and gravitational forces between two electrons whe..
A 2.20-g bullet embeds itself in a 1.60-kg block, which is attached to a spring of force constant 760 N/m. Find the time for the bullet-block system to come to rest
A nickel crystal is used as a diffraction grating for x-rays. Then the same crystal is used to diffract electrons. what is the kinetic energy of each electron
One arm of a U-shaped tube (open at both ends) contains water, and the other alcohol. at what height will the water be
A 38.8-cm diameter disk rotates with a constant angular acceleration of 2.60 rad/s2. It starts from rest at t = 0, and the line drawn from the center of the disk to the point P on the rim of the disk makes an angle of 57.3° with the positive x-axis a..
Consider a black body of surface area 28.0 cm2 and temperature 5600 K. How much power does it radiate
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