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Which of the following statements are true? Choose all that apply.
1. The magnetic field is always perpendicular to the velocity of the charge.2. Magnetic fields deflect moving charges.3. Magnetic fields are created by moving charges.4. The magnetic force is always perpendicular to both the magnetic field and the velocity of the charge.5.Magnetic fields don't do any work on charges.6. Magnetic fields cause charges to speed up.
A generator connected to an circuit has an rms voltage of 120V and an rms current of 34mA. what is the inductive reactance of the circuit
use bernoullis equation to estimate the upward force on an airplanes wing if the average flow speed of air is 191 ms
he primary coil of a transformer has N1 = 390 turns, and the secondary coil has N2 = 2 260 turns. what rms voltage is developed across the secondary coil
An object 2.0mm high is placed 12cm from a convex mirror of radius of curvature 12c, Determine the image distance using the mirror equation 1do+1di=1f
a playground merry go round has a radius of 4.40 m and a moment of inertia of 245kg.m^2 and turns with negligible friction about a vertical axle through is center. What is the average power supplied by the child
Transverse waves with a speed of 50.0 m/s are to be produced on a stretched string. A 5.00-m length of string with a total mass of 0.0600 kg is used. (a) What is required tension in the string? (b) Calculate the wave speed in the sting if the tension..
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.149 L per second, At what speed does the water exit the nozzle
A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.20 s for the ball to reach its maximum height. Find the ball's initial velocity
The charged plates of a parallel plate capacitor each have a charge density of ? C/m2. compute the electric field between the plates
An electromagnet is made by inserting a soft iron core into a solenoid. The solenoid has 1800 turns, radius 2.0 cm, and length 25 cm. What is the relative permeability KB of the iron core
A woman on a rocket traveling at 0.35c (with respect to Earth) observes a meteor come from in front of her and pass her at 0.62c. How fast is the meteor moving with respect to Earth?
question two runners start simultaneously from the same point on a circular 200m track and run in opposite directions.
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