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Q1. Five identical charges q = +3.0mC are arranged in a half-circle, each charge 46 degrees from the next. The radius of the circle r = 0.12m. A point charge of q0 = +1.0 mC sits in the center of the circle. What is the magnitude of net force acting on the center charge?
Q2. Plan the velocity/time graphs of the following motions:
a) a tiger that is speeding up at a uniform rate of acceleration while moving in negative direction.
b) An iguana that is slowing down at a uniform rate of acceleration while moving in positive direction.
c) A camel that is slowing down at a uniform rate of acceleration while moving in negative direction.
You're carrying a 3.40 m-long, 23 poles to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip.
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the pulsar makes one revolution, the rotation beam sweeps across the earth, & the earth receives a pulse of radio waves. ..
A uniform plank of length 5.8m and weight 229N rests horizontally on two supports, with 1.10 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 450N walk on the overhanging part of the plank be..
Due to the nature of the wastewater, the engineer wants to target the high end of this range. Find the proper diameter pipe to the nearest 2” (e.g., 2”, 4”, 6”, 8”, 10”, etc.) to achieve this design objective.
What mass of stone is necessary if the temperature is not to drop below 18.5°C overnight. Sunlight shining in during the daytime is absorbed by the floor, interior walls, and objects in the room, raising their temperature to 37.5°C.
A piece of balsa wood with density 0.50g/cm^3 is released under water. What is the initial acceleration?? Repeat for a piece of maple with density 0.760 g/cm^3? Repeat for a ping-pong ball with the average density of 0.127 g/cm^3.
The wire is cut at point P. Will the potential difference between points A and B increase, decrease, or remain the same? Give reason for.
A dentist uses a small mirror with a radius of 36 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 16 mm from the tooth, what is the magnification of an image.
Define the carrier power, total power and sideband power in the AM signal.
so hydrogen atoms have a thermal velocity of about 1000 m/s. How does the energy stored in the magnetic field compare with the kinetic energy in a given volume of space.
Smoke particles in the air typically have masses of the order of 10 to 16 kg. The Brownian motion (rapid, irregular movement) of these particles, resulting from collisions with air molecules, can be observed with microscope.
What is the turntables angular speed as the block
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