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Charges q, q, and -q are placed on the x-axis of x=0, x=2m, and x=4m respectively. At which of the following points does the electric field have the greatest magnitude a) x = 1m b) x = 3m c) x = 5m d) the electric field has the same magnitude at all three positions Please answer and show all calculations.
A horizontal board weighing 198 N is supported at points A and B. The plank serves as a platform for a painter, who weighs 558.5 N. Find out the maximum distance D, such that the plank would not tip, no matter where the painter stands.
Car Circles a Track. The 1,000 kg car is moving at the maximum speed it can without skidding off of the 50 m-radius, what is this maximum speed
A circular coil of wire 6.61 cm in diameter has a resistance of 3.3 ?. It is located in a magnetic ?eld of 0.15 T directed at right angles to the plane of the coil. How much electric energy is lost in the process
Plane monochromatic waves with wavelength 520 nm are incident normally on a plane transmission grating having 350 slits/mm
A movie camera with a (single) lens of focal length 85 mm takes a picture of a person standing 35 m away. what is the height of the image in millimeters on the film
The projection lens in a certain slide projector is a single thin lens. A slide 24.6 mm high is to be projected so that its image fills a screen 1.78 m high. Determine the focal length of the projection lens
When high-energy, chargedparticles move through a transparent medium with a speed greaterthan the speed of light in that medium, a shock wave, or bow wave,of light is produced.
tom twirls a ball of 0.15 kg on a string in a horizontal circle of radius 0.4 m. the ball travels once around the
three identical light bulbs, 24 ohm each, are connected in parallel with one another. find the equivalent resistance of the three light bulbs
Two thin lenses with a focal length of magnitude 10 cm, the first diverging and the second converging, are located 7.88cm apart. How far from this first lens is the final image formed
Two steel guitar strings have the same length. String A has a diameter of 0.60 and is under 450.0 of tension. Find the ratio of the wave speeds
A car is traveling at 95.0 km/hr when it collides with a stone wall. The car comes to rest after the first 30.0 cm of the car is crushed. what would the average force acting on the driver
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