A bicycle whose wheels have a radius of 66 cm is traveling at 2.0 m/s. If the wheels do not slip, what is the angular speed of the wheels?
What will be an ideal response?
3.0 rad/s
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A neutral atom must have ____
a. an equal number of protons and neutrons b. an equal number of protons and electrons c. an equal number of neutrons and electrons d. less electrons than protons e. more electrons than neutrons
Contrast the chemical composition of interstellar gas with that of interstellar dust
What will be an ideal response?
Find the radius of a star image formed on the retina of the eye if the aperture diameter (the pupil) at night is 0.70 cm and the length of the eye is 3.2 cm. Assume the wavelength of starlight in the eye is 500 nm. (1 nm = 10?9 m)
a. 2.8 × 10^?4 m b. 5.6 × 10^?4 m c. 3.1 × 10^?5 m d. 2.8 × 10^?6 m e. 3.2 × 10^?4 m
If the result of your calculations for a quantity has SI units of C2 ? s2/(kg ? m2), that quantity could be
A) an electric potential difference. B) a dielectric constant. C) an electric field strength. D) a capacitance. E) an electric potential energy.