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An electron in a picture tube moves with an acceleration of 7.0 × 1016 m/s2. What is the magnitude of the electric field in the tube?
Speakers A and B are vibrating in phase. They are directly facing each other, are 8.0 m apart, and are each playing a 76.0-Hz tone. The speed of sound is 343 m/s. On the line between the speakers there are three points where constructive interfere..
A particle possessing 8.25 uC of charge and mass 8.55 g is fired at a speed of 255 cm/s through two charged plates of length 34.6 cm, calculate the distance y in which the charge falls below its intended path
A block of mass 3.41 kg is attached to a spring (k=31.9 N/m) by a rope that hangs over a pulley of mass M=6.82 kg and radius R=3.61 cm. find the maximum extension of the spring
Calculate the number of coulombs of positive charge in 285 cm3 of (neutral) water. (Hint: A hydrogen atom contains one proton; an oxygen atom contains eight protons.)
a man pushing a mop across a floor causes it to undergo two displacements. compute the direction of the second displacement
The radius of a black hole is the distance from the black hole's center at which the escape speed is the speed of light. What is the radius of a black hole with the same mass as that of the Earth
A 600 gram particle (initially at rest at the origin) is subjected to a force of F=15i+20j (N) which pushes the particle along a track with a displacement described by s=3i+4j (m). calculate the average power produced by this force
For the circuit shown below, C = 0.113 µF and = 103 V. The switch throw is rotated to contact b after having been at contact for the long time, and 3.47s later the potential difference across the capacitor is equal to 1/2. What is the value of R.
The reflected sound is afterwards mixed with the transmitted sound, and 85 beats per second are detected. The speed of sound in body tissue is 1520m/s. compute the speed of the fetal heart wall at the instant this measurement is made.
Photons of wavelength 490 nm are incident on a metal. What is the work function of the metal
The car's motion can be divided into three different stages: its motion before the driver realizes he's late, its motion after the driver hits the gas (but before he sees the police car), and its motion after the driver sees the police car. Which of ..
Power transmission lines often use a form of electric current called alternating current, but in many regions, such as the Province of Quebec, high-voltage direct-current lines are used instead. What is the power loss due to resistance in the line
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