A rectangular coil (0.13 m × 0.98 m) has 277 turns and is in a uniform magnetic field of 0.50 T. If the orientation of the coil is varied through all possible positions, the maximum torque on the coil by magnetic forces is 0.096 N?m. What is the current in the coil?
a. 6.2E–4 A
b. 1.5E+0 A
c. 5.4E–3 A
d. 4.2E+2 A
e. 8.8E–5 A
c
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Suppose an object is moving in a straight line at 50 miles/hr. According to Newton's first law of motion, the object will
A) continue to move in the same way forever, no matter what happens. B) continue to move in the same way until it is acted upon by a force. C) eventually slow down and come to a stop. D) continue to move in a straight line forever if it is in space, but slow and stop otherwise. E) continually slow down but never quite come to a complete stop.
What do gamma rays, X-rays, light, and radio waves all have in common?
What will be an ideal response?
A bimetallic strip is formed from two materials that have different
a. coefficients of linear expansion b. heat capacities c. calories d. phase transitions e. relative humidities
What is the energy of a photon emitted in a transition from the n = 3 state to the n = 2 state in He+?
A. 15.1 eV B. 7.56 eV C. 3.78 eV D. 2.12 eV E. 1.89 eV