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Two stationary positive point charges, charge 1 of magnitude 3.15 nC and charge 2 of magnitude 1.95 nC , are separated by a distance of 36.0 cm . An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges.
What is the speed vfinal of the electron when it is 10.0 cm from charge 1?
two particles of masses m1 93000 kg and m2 4200 kg are initially at rest an a distance 148.1 km apart. the masses are
A contact lens is made of plastic with an index of refractionof 1.60. The lens has a focal length of +23.0 cm, What is the radius of curvature of the outer surface
A 80-g bullet is fired from a rifle having a barrel 0.582 m long. Choose the origin to be at the location where the bullet begins to move. Then the force (in newtons) exerted by the expanding gas on the bullet is 14100 + 9100x - 24250x2, where x is i..
Sarah and her bicycle have a total mass of 40 kg. Her speed at the top of a 10 m high and 100 m long hill is 5 m/s. at what speed will she be going when she reaches the bottom
How much waste heat is produced? Once it is brought back to rest (assuming the engine shuts off at the end of the race), how much waste heat has been produced?
If it were put in a pressure chamber and the pressure were increased to that of Venus (9.12 MPa), how would its volume (in cm3) change?
The efficiency of a Carnot engine is 27%. The engine absorbs 795 J of heat per cycle from a hot reservoir at 499 K. Determine the heat expelled per cycle and the temperature of the cold reservoir.
the plates of a fabry-perot interferometer have a reflection coefficient r 0.99. calculate the minimum resolving power
A 90.0- and a 45.0- resistor are connected in parallel. Whenthis combination is connected across a battery, the currentdelivered by the battery is 0.376 A. When the 45.0- resistor is disconnected, the currentfrom the battery drops to 0.131 A.
Why do some symbols for elements seem to bear no relationship to their names?
A physicist uses a cylindrical metal can 0.300m high and 0.070m in diameter to store liquid helium at 4.22 K; at that temperature the heat of vaporization of helium is 2.09×104J/kg. How much helium is lost per hour
A wire has a diameter of 0.200mm and stretches 20% when a force of 6.28 Newtons is applied to it. What is the elastic (Young's) modulus of this wire
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