According to present theories, there is a neutrino for all the following particles except:
a. the electron.
c. the muon.
b. the tau lepton.
d. the positive Kaon.
D
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The second step in the precipitation-hardening process is to _________the alloy to maintain a uniform distribution of atoms in the grains at low temperature.
Fill in the blank(s) with the appropriate word(s).
A proton moving eastward with a velocity of 5.0 × 103 m/s enters a magnetic field of 0.20 T pointing northward. What is the magnitude and direction of the force that acts on the proton?
A) 0 N B) 1.6 × 10-16 N upwards C) 1.6 × 10-16 N downwards D) 1.1 × 10-16 N eastwards E) 4.4 × 10-16 N westwards
Each 2.0-m length of a long cylinder (radius = 4.0 mm) has a charge of 4.0 nC distributed uniformly throughout its volume. What is the magnitude of the electric field at a point 5.0 mm from the axis of the cylinder?
a. 9.9 kN/C b. 8.1 kN/C c. 9.0 kN/C d. 7.2 kN/C e. 18 kN/C
An object of mass m is hung from a string and set swinging. The period of the oscillation is recorded as T. The object of mass m is removed and is replaced by an object of mass 2m. When this object is set swinging, the period of its motion is
1. 2T 2. T/2 3. ?2T 4. T