A 1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. What is the magnitude of the friction force required to keep the car from sliding?
A) 9000 N
B) 9800 N
C) 300 N
D) 900 N
E) 3000 N
A
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A series RLC circuit has a resistance of 500
and inductance of 20.0 mH, and a capacitance of 2.00
F The power source provides a voltage of v = (170 sin(377t))V. What is the peak current in this circuit?
A. 92.4 mA B. 101 mA C. 121 mA D. 170 mA E. 240 mA
Consider an asteroid that orbits the Sun once every 5 years. Does this object ever cross the Earth's orbital path?
1.Yes, it must cross twice every five earth years. 2.No, it can never cross Earth’s orbital path. 3.Yes, it must cross once every Earth year. 4.It is impossible to tell.
Fluid Flow: As shown in the figure, water (density 1000 kg/m3) is flowing in a pipeline. At point 1 the water speed is 5.90 m/s. Point 2 is 5.20 m above point 1. The cross-sectional area of the pipe is 0.0800 m2 at point 1 and 0.0200 m2 at point 2. What is the pressure difference p1 - p2 between points 1 and 2? Treat the water as an ideal incompressible fluid. 
Fill in the blank(s) with the appropriate word(s).
The antineutron has a quark structure _________.
A. uud
B. udd
C. 
D. 
E. 