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Calculate the force acting between two point charges of +10.0μC and -5 μC seperated by a distance of 10.0 cm in a vacuum.
A 1kg ball with a speed of 3 m/s collides head on, elastically, with a 2 kg ball moving at 1 m/s. What will be the velocity of each ball after the collision
An RC circuit with 2.50 ?F and 7.60 M?? includes a 6.00 volt source, What is the time constant for charging the capacitor
An automobile has a mass 2100 kg and a velocity of 17 m/s. Find the impulse (magnitude and direction) that acts on the skidding cars from just after the collision until they come to a halt
Waterslides are nearly frictionless, hence can provide bored students with high-speed thrills. If Kevin is clocked at 25 m/s at the bottom of the slide, find the work done on him by friction
using a rope, a child pulls a box across a rough floor at constant speed. The tension in the rope is 105 N and the rope makes an angle of 37 with the horizontal. Find the friction force acting on the box
q1. a book with a mass of 2.0 kg is held in equilibrium on a board with a slope of 60.0 degrees by a static frictional
radium is a radioactive element whose nucleus emits an alpha particle a helium nucleus that has a kinetic energy of
A stone is dropped into a river from a bridge at a height h above the water. Another stone is thrown vertically down at a time t after the first is dropped. Both stones strike the water at the same time. What is the initial speed of the second sto..
q1. a 92 kg man standing on a surface of negligible friction shoves a 73 g stone lying at his feet giving it a velocity
A 124-? resistor and a 163-? resistor are both connected in parallel across a power supply. If the potential drop across the 124-? resistor is 12 V, what is the exact potential drop (in volts) across resistorv 3
A rocket of mass 4.5 x 105 kg is accelerating straightup. Its engines produce an upward thrust of 7.5 x106 N, Find the acceleration of the rocket
The Achilles tendon is subjected to a large tension stress that results in a strain of 5%. how much does it elongate as a result of this strain
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