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A uniform electric field exists everywhere in the x, y plane. This electric field has a magnitude of 6000 N/C and is directed in the positive x direction. A point charge -6.3 × 10-9 C is placed at the origin. Find the magnitude of the net electric field at
(a) x = -0.18 m,
(b) x = +0.18 m, and
(c) y = +0.18 m.
Sherlock Holmes examines a clue by holding his magnifying glass (with a focal length of 15.0 cm) 10.0 cm away from an object. Find the image distance and the magnification. explain the image that he observes.
A block starting atop a frictionless hemispherical dome starts sliding from rest. Write down the two equations of motion of the block in terms of r and ? (i.e. use polar coordinates).
The speed of a passenger train is 16mph faster than the speed of a frieght train. The passenger train travels 330 miles in the same time it takes the frieght train to travel 250miles. find the speed of each train.
Assuming that the bond energy holding together a water molecule is typical, use table below to estimate how various molecular bonds might be broken with this energy.
How far should you place the lens from the slide. Express the direction as an angle with respect to the +x axis.
An object is 17 mm in front of a converging lens, and the image is 3 mm behind the lens. What is the focal length of the lens? Reply In mm
An air conditioner is used to keep the interior of a house at a temperature of 25C while the outside temperature is 34C a)If heat leaks into the house at the rate of 11kW, and the air conditioner has the efficiency of a Carnot engine, what is the ..
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm . What is the acceleration of the object at t= 2.50 s ?
What is the mass of the rim.
Find out the frequency of the fourth harmonic if the string is fixed at one end and free at other. (That is, if the free end is attached to a long string of negligible mass.)
A baseball (m = 148 g) approaches a bat horizontally at a speed of 41.5 m/s (93 mi/h) and is hit straight back at a speed of 45.9 m/s (103 mi/h).
What is the average induced emf in the coil in mV. If he is crossing a river where the current is 1.60 km/h, in what direction should his boat be headed if he wants to reach the point directly opposite his starting point.
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