A venturi tube may be used as the inlet to an automobile carburetor. If the 2.0-cm diameter pipe narrows to a 1.0-cm diameter, what is the pressure drop in the constricted section for an airflow of 3.0 m/s in the 2.0-cm section? (? = 1.2 kg/m3.)
a. 70 Pa
b. 85 Pa
c. 100 Pa
d. 120 Pa
e. 81 Pa
e
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Satellite Motion: A satellite having orbital speed V orbits a planet of mass M. If the planet had half as much mass, the orbital speed of the satellite at the same distance from the center would be
A. V
.
B. 2V.
C. V.
D. V/
.
E. V/2.
What is the phase angle between the voltages of the inductor and capacitor in a RLC series circuit?
A) 0° B) 45° C) 90° D) 180° E) 270°
Force on a Moving Charge: A charged particle moving along the +x-axis enters a uniform magnetic field pointing along the +z-axis. Because of an electric field along the +y-axis, the charge particle does not change velocity. What is the sign of this particle?
A. positive B. negative C. The particle could be either positive or negative. D. None of these choices is correct.
List the three types of objects a star's core can collapse to, and give the mass limits for each
What will be an ideal response?