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A charge q= 4.0 μC is moved 0.25 meter horizontally from the origin to point P in a region where an electric field is 150 V/M and directed vertically. Find the change in electric potential energy of the charge?
A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.703 A) sin [(257 rad/s)t]. What is the average power delivered to the light bulb
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet
A 0.316-m-thick sheet of ice covers a lake. The airtemperature at the ice surface is -17.5 °C. Calculate the number of millimeters by whichthe ice thickens
A bat flies toward a wall at a speed of5.5m/s. As it flies, the bat emits an ultrasonic sound wave with frequency29.0kHz. What frequency does the bat hear in the reflected wave
The fundamental frequency of an open organ pipe corresponds to the B above middle C (493.9 Hz on the chromatic musical scale). The third resonance of a closed organ pipe has the same frequency. (Assume that the speed of sound in air is 343 m/s.) (a) ..
As a summer intern for a microscope company, you are designing a compound microscope for a client that provides you with the following information. determine the barrel length needed for the microscope
a persons lens prescription for glasses is 3 d. if the glasses sit 1.9 cm from the eye what is that persons near
A rail car that weighs 35 N is accelerated at 7.7 m/s/s for 5.6 seconds. How much work is done on the rail car
A projectile is fired at v0 = 407.0 m/s at an angle of ? = 72.0o with respect to the horizontal. How far will the projectile travel in the horizontal direction
What is the ratio of the intensity of an earthquake wave as itpasses a point 20 km from the source tothe intensity as it passes a point 12 kmfrom the source?
In an amusement park ride called The Roundup, passengers stand inside a 16.0 -diameter rotating ring. Suppose the ring rotates once every 5.40 . If a rider's mass is 57.0 , with how much force does the ring push on her at the top of the ride
The moon's diameter is 3.48 × 106 m, and its mean distance from the earth is 3.85 × 108 m. Find the diameter of the moon's image on the slide film
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