Circular motion of charges: A charged particle of mass  0.0020 kg is subjected to a 6.0 T magnetic field which acts at a right angle to its motion. If the particle moves in a circle of radius 0.20 m at a speed of 5.0 m/s what is the magnitude of the charge on the particle?

Energy density: How much energy is stored in a room 3.0 m by 4.0 m by 2.4 m due to the earth’s magnetic field with a strength of 5.0 × 10-5 T? (µ0 = 4π × 10-7 T · m/A)

Transformers: The primary coil of a transformer has 100 turns and its secondary coil has 400 turns.  If the ac voltage applied to the primary coil is 120 V, what voltage is present in its secondary coil?

Motional emf: A 50-cm wire placed in an east-west direction is moved horizontally to the north with a speed of 2.0 m/s.  The horizontal component of the earth’s magnetic field at that location is 25 µT toward the north and the vertical component is 50ìT downward. What is the emf induced between the ends of the wire?

Flux: A circular loop of radius 0.10 m is rotating in a uniform external magnetic field of 0.20 T.  Find the magnetic flux through the loop due to the external field when the plane of the loop and the magnetic field vector are(a) parallel. (2.5 points)(b) perpendicular. (2.5 points)(c) at an angle of 30° with each other. (2.5 points)

Power: A series LRC ac circuit has a peak voltage of 111 V and a peak current of 2.00 A. If the current lags the voltage by 35.0° what is the average power of the circuit?

Velocity selector: A beam of electrons is accelerated through a potential difference of 10 kV before entering a region having uniform electric and magnetic fields that are perpendicular to each other and perpendicular to the direction in which the electron is moving.  If the magnetic field in this region has a value of 0.010 T, what magnitude of the electric field is required if the particles are to be undeflected as they pass through the region?

Place the following in order of increasing first ionization energy.N  F  As

Give the percent yield when 28.16 g of CO2 are formed from the reaction of 4.000 mol C8H18 with 8.000 mol of O2.

What species is represented by the following information? p = 12 n = 14 e = 10