Which one of the following is not true of neutrinos?
a. They have no charge.
b. They have no spin.
c. One type of neutrino may change into another type of neutrino.
d. They are leptons.
e. They do not take part in strong nuclear interactions.
b
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The explosion in a cannon exerts an average force of 30,000 N for 2.00 meters. The velocity of a 2.00 kg projectile shot from the cannon is
A. 198 m/s. B. 245 m/s. C. 302 m/s. D. 354 m/s. E. 412 m/s.
A certain ac signal at 1000 Hz is applied across an inductor and a 100-? resistor. If the power factor of the circuit is 0.400, what is the impedance of this circuit?
A) 150 ? B) 200 ? C) 250 ? D) 100 ? E) 300 ?
Two solid spheres, both of radius 5 cm, carry identical total charges of 2 µC. Sphere A is a good conductor. Sphere B is an insulator, and its charge is distributed uniformly throughout its volume. How do the magnitudes of the electric fields they separately create at a radial distance of 6 cm compare?
1. EA > EB = 0 2. EA > EB > 0 3. EA = EB > 0 4. 0 < EA < EB 5. 0 = EA < EB
If a lamp has resistance of 120 W when it operates at 200 W, what is the applied voltage?
a. 120 V c. 110 V b. 220 V d. 155 V