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Q. Two 1.80 V batteries with their positive terminals in the same direction--are inserted in series into the barrel of a flashlight. One battery has an internal resistance of 0.310, the other an internal resistance of 0.153. When the switch is closed, a current of 0.600 A passes through the lamp.
What is the lamp's resistance? What fraction of the power dissipated is dissipated in batteries?
Q. A uniform electric field of magnitude 350N/C pointing in the positive x-direction acts on an electron, which is at first at rest. The electron has moved 3.6cm.
What is the work completed by the field on the electron?
A 0.20 {rm kg} rock is thrown vertically upward from the top of a cliff that is 31.0 {rm m} high. While it hits the ground at the base of the cliff, the rock has the speed of 31 {rm m/s}. Assume that air resistance can be ignored; find the initial sp..
The potential difference between the plates of a capacitor is 180V. Midway between the plates; a proton and an electron are released. The electron is released from rest.
find the work done to move the particle from x = 0 to x = 10.0 m by graphically determining the area under the F versus x graph. (Do this on paper. Your instructor may ask you to turn in this graph.)
Two diffraction patterns are formed on the screen. What is the distance between the common center of the diffraction patterns and the first occurrence of the spot where the dark fringe from one pattern falls on top of a dark fringe from the other p..
What is phase change as the light is reflected from the top
A spring has k = 96 Nm. use a graph to determine the work needed to stretch it from x=3.8 cm to x=6.1cm, where x is the displacement from its unstretched length.
A 1050kg car carrying four 78kg people travels over a rough "washboard" dirt road with corrugations 4m apart which causes car to bounce on its spring suspension.
Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?
A doubly charged helium atom whose mass is 6.6 10 to 27 kg is accelerated by a voltage of 2200 V. What will be its radius of curvature if it moves in the plane perpendicular to a uniform 0.308 T field?
A computer is reading data from a rotating CD-ROM. At a point that is 0.030m from the center of the disk, centripetal acceleration is 120m/s2. What is the centripetal acceleration at a point that is 0.05 m from the center of disc.
What mass can it support in water before sinking. Two concentric spherical shells with uniformly distributed masses M1 = kg and M2 = kg are situated as shown . Find out the magnitude Find the magnitude of the net gravitational force on a particle ..
A ship sets out to sail to a point 197 km due north. An unexpected storm blows the ship to a point 107 km due east of its starting point. In what direction must it now sail to reach its original destination.
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