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Three equal charges of magnitude +4.00 uC are placed at the corners of an equilateral triangle of side 2 cm. what is the electric potential energy of the system of these charges?
A 22 child slides down a 2.4 -high playground slide. She starts from rest, and her speed at the bottom is 1.9 What is the change in thermal energy of the seat of her pants
The position function x(t) of a particle moving along an x axis is x = 4.0 - 4.5t2, At what positive time does the particle pass through the origin
A beam of electrons is incident on two slits separated by a distance of 2.0×10-6 m. Calculate the kinetic energy of the electrons
A horse canters away from its trainer in a straight line, moving 150m away in 14 sec. It then turns abruptly and gallops halfway back in 4.5 sec.
Assume the sound speed in air is 343 m/s. A parachutist leaps from a hovering helicopter and after 3.1s of free fall shouts back toward the helicopter
Both an alpha particle and an electron are placed in a capacitor that is .0015 m wide (opposite plates. estimate the potential difference between the plates
Two pendulums are allowed to rotate frictionlessly and without air resistance around the same point of rotation, Where do the masses collide
What is the horizontal distance x (in metres) to the base of the wall supporting the mirror of the nearest point of the floor that can be seen reflected in mirror.
A wooden rod of negligible mass and length 82.2 is pivoted about a horizontal axis through its center. A white rat with mass 0.440 clings to one end of the stick, and the mouse with mass 0.220 clings to the other end. The system is released from rest..
In the 1950s, an experimental train that had a mass of 2.30 x 10^4 kg was powered across a level track by a jet engine that produced the thrust of 5.30 x 10^5 N for a distance of 504 m. unless otherwise directed, suppose that air resistance is neglig..
When specially prepared Hydrogen atoms with their electrons in the 6f state are placed into a strong uniform magnetic field, If we don't neglect the intrinsic spin of the electrons, then how many energy levels can we observe in the ground state
A 8.90 kg object oscillates at the end of a vertical spring that has a spring constant of 1.95 multiply.gif 104 N/m. Calculate the frequency of the dampened oscillation
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