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Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal. Charge A is 0.169 m from the spot, while charge B is 0.432 m from it. Calculate the ratio qB/qA of the charges.
A neutron star is the remnant left after certain supernovae (explosions of giant stars). Typically, neutron stars are about 20 in diameter and have around the same mass as our sun. What is a typical neutron star density in g/cm^3?
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 3.7 m/s. The car is a distance d away. The bear is 30 m behind the tourist and running at 6.0 m/s. The tourist reaches the car safely. What is the m..
Determine the vertical component. when would a microphone at the other end first detect a disturbance.
A 1.00-kg glider attached to a spring with a force constant of 25.0 N/m oscillates on a horizontal, frictionless air track. At t = 0 the glider is released from rest at x = -3.00 cm.
However, the current increases by just 0.11 A when R1 is removed, leaving R2 connected across the battery. Find (a) R1 and (b) R2.
Illustrate at what horizontal distance, x, from the base of the building will the rock strike the ground? Assume the ground is level and that the side of the building is vertical. The acceleration of gravity is 9.8 m/s2 .
person walks 25.0° north of east for 3-km. How far would another person walk due north and due east to arrive at the equal location?
a typical maximum acceleration for a car is about 8 m/s^2, A sports car traveling at 20m/s accelerates at this rate for 1.25 seconds
What is the least radius of the circular path? (b) At this radius, what is the force causing the centripetal acceleration of the pilot.
A 100 kg cannon at rest contains a 10-kg cannon ball. When fired, cannon ball leaved the cannon with a speed of 450 m/s. What is the recoil speed of the cannon.
Find out the magnitude and direction of forces
An organ pipe is 119 cm long. What are the fundamental and first three audible overtones if the pipe is closed at one end.
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