A reasonable estimate for the mass of a typical female college student is
A) 20 kg.
B) 50 kg.
C) 150 kg.
D) 200 kg.
B
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Single-Slit Diffraction: A beam of light of wavelength 630 nm is incident on a slit that is 0.400 mm wide. If the distance between the slit and the screen is 1.80 m, what is the width on the screen of the central bright fringe?
A. 1.94 mm B. 2.94 mm C. 3.54 mm D. 5.67 mm E. 6.94 mm
Complete and balance the equation: Mg + HC2H3O2 ? _____________________
Fill in the blank(s) with correct word
What information does the Doppler technique give about an extrasolar planet?
A) the planet's radius B) the planet's density C) the planet's minimum mass D) all of the above
A water pump draws about 3.7 A when connected to 220 V. What is the cost (with electrical energy at 6.0 cents per kWh) of running the pump for 7.0 h?
a. 2.5 cents b. 9.0 cents c. 34 cents d. 68 cents e. 26 cents