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1) If a charge particle move in a straight line and there no other forces on it except possibly from a magnetic field, can you say with certainty that no magnetic field is present? Explain.2) In a velocity selector, the uniform magnetic field of 1.5 T is produced by a large magnet. Two parallel plates with a separation of 1.5 cm produce the perpendicular electric field. What voltage should be applied across the plates so that:a) A singly ionized ion traveling 8.0 x 104 m/s will pass through undeflected.b) A double ionized ion traveling at the same speed will pass through undeflected.3) A horizontal magnetic field of 1.0 x 10-4 T is at an angle of 30o to the direction of the current in a straight wire 75 cm long. If the wire carries a current of 15 A, what is the magnitude of the force on the wire?4) An electron travels at a speed of 2.0 x 10-4 m/s through a uniform magnetic field of strength 1.2 x 10-3 T. What is the magnitude of the magnetic force on the electron if its velocity and the magnetic field:a) Are perpendicularb) Make an angle of 45oc) Are paralleld) Are exactly opposite?5) A square loop of wire with sides of length 40 cm is in a uniform magnetic field perpendicular to its area If the field's strength is 100 mT an it decays to zero in 0.010 seconds:a) What is the magnitude and of the average emf induced in the loop?b) What happens to the emf is the side lengths are reduced by a factor of ½?6) The armature of an ac generator has 100 turns. Each turn is a rectangular loop measuring 8.0 cm by 12 cm. The generator has a sinusoidal voltage output with an amplitude of 24 V. If the magnetic field of the generator is 250 mT,a) With what frequency does the armature turn?b) If you double the B and cut in half, how does this affect the amplitude?7) An ac generator supplies 20 A at 440 V to a 10,000 V power line. If the step up transformer has 150 turns in its primary coil, how many turns are in the secondary coil?
water flows with a speed of 2.00 m/s through a horizontal 15 cm diameter pipe and is bent along the centerline of the pipe to face the oncoming flow. How high does the water rise in the tube
Two loudspeakers placed 6.00 m apart are driven in phase by an audio oscillator having a frequency range from 1908 Hz to 2471 Hz, At what frequency of the oscillator does the sound reaching point P interfere constructively
You have a small electromagnet that consumes 300 W from a residential circuit delivering 120 V at 60.0 Hz. What is the internal resistance of the electromagnet
The only force acting on a 1.9 kg body as it moves along the x axis varies as shown below. The velocity of the body at x = 0 is 4.0 m/s. What is the kinetic energy of the body at x = 3.0 m
two spherical objects are separated by a distance that is 1.80 10-3 m. the objects are initially electrically neutral
A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position. find his angular velocity when he left the diving board
A 41 kg crate, starting from rest, is pulled across a floor with the constant horizontal force of 250 N. For the first 10m the floor is frictionless, and for the next 11.00 m the coefficient of friction is 0.17. What is the final speed of the crat..
A laptop computer sits on the horizontal surface of the seat of a car moving at 8.0 m/s. The driver starts slowing down to stop. Find the minimum stopping distance
With a particular grating a doublet of the two wavelengths 731.3 and 732.1 nm is viewed in the third order at 9.3° to the normal, find the grating spacing in nanometers
A train is at constant 60km/h moves east for 40minute, then in a direction 50 east of due north for 20 minute, and then west for 50minute. Find the angle of its average velocity during this trip
Two capacitors are connected in series. Let 3.40?F be the capacitance of first capacitor, 5.00?Fthe capacitance of the second capacitor, Calculate the potential difference across each capacitor
the electron beam emerging from a certain high-energy electron accelerator has a circular cross section of radius 1.45
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