A highway curve has a radius of 0.14 km and is unbanked. A car weighing 12 kN goes around the curve at a speed of 24 m/s without slipping. What is the magnitude of the horizontal force of the road on the car?
a. 12 kN
b. 17 kN
c. 13 kN
d. 5.0 kN
e. 49 kN
d
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Potential: If the result of your calculation of a quantity has SI units kg ? m2/(s2 ? C), that quantity could be
A. an electric field strength. B. a dielectric constant. C. an electric potential difference. D. a capacitance E. an electric potential energy.
Given that organic molecules need to react in order to produce life, this suggests we should search for worlds in the solar system that have
A) either an atmosphere, or a surface or subsurface liquid medium such as water, or both. B) organic molecules on their surfaces C) an atmosphere D) rocky surfaces
The lines in the visible region of the hydrogen spectrum arise from transitions from higher levels back to the level where n equals
a. 3. b. 1. c. 2. d. 4.
Which is a characteristic of Jovian planets when compared to Terrestrial planets?
a. Jovian planets are much larger than Terrestrial planets b. Jovian planets have rocky surfaces c. Jovian planets have no differentiation like Terrestrial planets d. Jovian planets have moons, unlike the Terrestrial planets e. Jovian planets have warmer atmospheres than Terrestrial planets.