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Two positive point charges are a fixed distance apart. the sume of their charges is Qt. what charge must each have in order to a) mazimize the electric force between them, and b) minimize it?
A 3.80-kg cylindrical rod of length 2.00 m is suspended from a horizontal bar so it is free to swing about that end. What is the angular velocity of the rod immediately after the collision
An L-R-C circuit has an inductance of 0.490H , a capacitance of 2.90×10?5F , and a resistance of R. What is the angular frequency of the circuit when R=0
A man pulls a 333,000 kg jet down a runway using a rope. The rope is attached to nose of jet and goes down at a 17 degree angle. Calculate acceleration of jet and normal force on jet
question1consider a simple pendulum consisting of a point mass m attached to the end of a mass less rod. the pendulum
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 3.26 x 105 N. What is the work done on the jet by the catapult
An automobile has a total mass of 2200 kg. It accelerates from rest to 70 km/h in 40 s. Assume each wheel is a uniform 44 kg disk. find the total kinetic energy of the automobile
A 0.117 kg meterstick is supported at its 37.7 cm mark by a string attached to the ceil- ing. A 0.624 kg mass hangs vertically from the 4.04 cm mark. A mass is attached somewhere on the meterstick to keep it horizontal and in both rotational and t..
A toy cannon uses a spring to project a 5.30 g soft rubber ball. The spring is originally compressed by 5.00 cm, At what point does the ball have maximum speed
Two point charges, q1= 2.40 nC and q2= -6.50 nC, are 0.100 m apart. Point A is midway between them; point B is 0.080 m from q1 and 0.060 m from q2 (see the attachment). Take the electric potential to be zero at infinity.
What is the average electric field strength in this region?
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.02 mT. obtain the radius of the circular path
When four people with a combined mass of 305 kg sit down in a 2.0 103-kg car, The four people get out of the car and bounce it up and down. What is the frequency of the car's vibration
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