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A +16μC point charge and a -4μC point charge are separated with 3m. How far from the +16μC point charge, along the line joining the two charges, is the point where the net electric field is zero? (Other than at infinity)
The radius of the hydrogen atom is 0.053 nm. What is the frequency of the circular motion of the electron in the hydrogen atom
two isotopes of carbon carbon-12 and carbon-13 have masses of 19.93 10-27 kg and 21.59 10-27 kg respectively. these two
A mining cart is pulled up a hill at 20 km/h and then pulled back down the hill at 33 km/h through its original level. What is the average speed of the cart for its round trip
two stationary positive point charges charge 1 of magnitude 3.15nc and charge 2 of magnitude 1.75nc are separated by a
An athlete needs to lose weight and decides to do it by "pumping iron." If the weight is lifted once every 2.00 s, how long does the task take
A copper wire is 6.00 m long and has a cross-sectional area of 2.00 10^-4 m2. what is the maximum torque that can act on it
A rock is thrown vertically upward with a speed of12.0 m/s from the roof of a building that is 50.0 m above the ground. Suppose free fall. Find the speed of the rock just before it strikes the ground
Imagine that the only visible photons that an electron in a box of unknown length emits have wavelengths of 689nm and 413nm, Identify the transitions and find the length of the box
A ball of mass 0.300kg that is moving with a speed of 5.4m/s collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
The springs of a 1600 kg car compress 5.0 mm when its 70 kg driver gets into the driver's seat, If the car goes over a bump, what will be the frequency of vibrations
suppose 2.5 kg of 32 deg c water is mixed with 9.3 kg of 65 deg c water. if no heat is lost in this system then what is
On a certain game show, contestants spin a wheel when it is their turn. One contestant gives the wheel an initial angular speed of3.10rad/s. Through what angle has the wheel turned when its angular speed is1.55rad/s
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