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Q. Two point charges, Q_1 = -6.9 mu C and Q_2 = 2.0 mu C are located between two oppositely charged parallel plates. The two charges are separated by a distance of x = 0.33 m. Assume that the electric field produced by the charged plates is uniform and equal to E = 7.8×10^4 N/C.
Q. An 80 g arrow is fired from a bow whose string exerts an average force of 95 N on the arrow over a distance of 84 cm. What is the speed of the arrow as it leaves the bow?
What is the smallest thickness of a soap film (n = 1.33) that would appear black if illuminated with 450 -nm light? suppose there is air on both sides of the soap film.
Calculate the amount of work (in electron-volts) it would take to move an electron from 11.6 to 13.4 away from a +3.50 point charge.
A 1200 N uniform boom is supported by a cable perpendicular to the boom, as in Figure P8.28. The boom is hinged at the bottom, and a 2000 N weight hangs from its top. Find out the tension in the supporting cable and the components of the reaction ..
Radius=10m Vt=12.3 If at point A the track exerts a force on the car that is 2.92 × 10^4 N greater than the car's weight, what is the mass of the car.
Coefficient of linear expansion for aluminium
find the ratio of vb to vr, where vr is defined above and vb is the boats speed with respect to the water.
A jet is flying horizontally. when the plane is directly overhead at B, A person on the ground hears the sound coming from A. the average temperature of the air is 20 degrees celcius. if the speed of the plane at A is164 meters per second, what is..
Choose the correct explanation for why you can determine the maximum load given that theta_min is the minimum angle crane arm can make with the horizontal.
A 67.3 ice skater moving to the right with the velocity of 2.52 throws a .151 snowball to the right with a velocity of 33.7 relative to the ground. What is velocity of the ice skater after throwing the snowball.
Two wires, each 28.15 cm long, are connected to two separate 9.00 V batteries as shown in the figure. The resistance of the first wire is 5.00 Ω, and that of other wire is unknown (R). If the separation between the wires is 4.55 mm, what value of R w..
How fast must the car be travelling just as it leaves the cliff in order to clear the river and land safely on the opposite side.
The sport with the fastest moving ball is jai alai, where measured speeds have reached 303km/h. If a professional jai alai player faces a ball at that speed and involuntarily blinks, he blacks out the scene for 100ms. How far does ball move throughou..
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