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A velocity selector has an electric field of magnitude 2470 N/C, directed vertically upward, and a horizontal magnetic field that is directed south. Charged particles, traveling east at a speed of 6.50 × 103 m/s, enter the velocity selector and are able to pass completely through without being deflected. When a different particle with an electric charge of +4.00 × 10-12 C enters the velocity selector traveling east, the net force (due to the electric and magnetic fields) acting on it is 1.90 × 10-9 N, pointing directly upward. What is the speed of this particle?
The magnetic force exerted on a 1.3 - m segment of straight wire is 1.6 N. The wire carries a current of 3.1 A in a region with a constant magnetic field of 0.52 T. What is the angle between the wire and the magnetic field?
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes in 69.0 degrees, Find the angle the resultant force makes with the rope of dog A
what force would be needed to pull the same wooden.
question1a wire has a mass of 1.00 gcm is positioned on a horizontal surface with the coefficient of friction of 0.250.
A grindstone of a radius 4 m is firstly spinning with a radius of 8 rad/s. The angular speed is then increased to 12 rad/s over next 4.0 seconds. Suppose that the angular acceleration is constant. What is the average angular speed of grindstone.
a rigid tank is divided into two rooms by a membrane both containing water. room a is at 200 kpa ??0.5 m3kg va1 m3 and
a 6cm diameter horizontal pipe gradually narrows to 4cm. whenwater flows throught this pipe at a certain rate the
A singly charged ion of unknown mass moves in a circle of radius 14.5 cm in a magnetic field of 7.4 T, What is the mass of the ion
A spacecraft moving away from Earth emits a 4990 Hz signal. A scientist on Earth measures the signal to be 4989 Hz. What is the speed of the spacecraft relative to Earth
a 81.3 g mass of iron is formed into a right circular cylinder shaped so that its diameter equals its height. you will
Assume that the sun runs out of nuclear fuel & suddently collapses to form a white dwarf star, with a diameter equal to that of the Earth. Estimate the new rotation period of the Sun.
Explain how many pellets must be added to 450 g of water that is initially at 20.0°C to make the equilibrium temperature 25.0°C? Neglect any energy transfer to or from the container.
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