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When three point charges +4.0 μC, -5.0 μC, and -9.0 μC are placed on the x-axis at the points x = 0 cm, x = 40 cm, and x = 120 cm, respectively.
What is the x component of the electrostatic force on the -9.0 μC charge due to the other two charges?
A reflecting telescope has a main mirror with fM = 570 mm. If an eyepiece with a magnification of 45 is used, what is the total magnification of the telescope
You dip your finger into a pan of water twice each second,producing waves with crests that are separated by 0.20 m. Determine the frequency of the water waves. Determine the period of the water waves. Determine the speed of the water waves.
A very hard rubber ball (m = 0.7 kg) is falling vertically at 9 m/s just before it bounces on the floor. find the average force exerted by the floor on the ball
Determine the wave speed on the string and determine the speed of sound from the data given.
Nichrome wire is used in some radiative heaters. Find what power will it draw when first switched on
A solid metal sphere of radius 4 meter carries a total charge of -7.60 uC. Obtain the magnitude of the electric field at a distance from the sphere's center of 0.20 meter
a kid plays with a yo-yo of mass 125 g and twirls it in a vertical circle. the lneght of the string is 90.0 cm. the kid
Consider two identical insulated metal spheres, A and B. Sphere A initially has a charge of -6.0 units and sphere B initially has charge of -2.0 units. The sphere are brought in contact with each other for a short time and then separated again. What ..
A 2 cm cube of aluminum has a mass of 22 grams. Calculate the density of this aluminum square in grams per cubic centimeters (gm/cm 3 ).
A 0.320 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? kg (b) What fraction of the original k..
An arrangement of two pulleys, as shown in the figure, is used to lift a 50.0-kg mass a distance of 4.70 m above the starting point. What is the change in the potential energy of the weight
A rifle with a weight of 25 N fires a 3.5 g bullet with a speed of 280 m/s. Find the recoil speed of the rifle
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