One microgram (?g) contains how many grams?
a. 10^-3
b. 10^-6
c. 10^-9
d. 10^3
b
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The kinetic friction force that a horizontal surface exerts on a 60.0-kg object is 50.0 N. If the initial speed of the object is 25.0 m/s, what distance will it slide before coming to a stop?
A) 15.0 m B) 30.0 m C) 375 m D) 750 m
The Venus lacks
a. an atmosphere. b. a solid surface. c. a moon. d. a gravitational field.
To increase the current density in a wire of length and diameter D, you can
a. decrease the potential difference between the two ends of the wire. b. increase the potential difference between the two ends of the wire. c. decrease the magnitude of the electric field in the wire. d. heat the wire to a higher temperature. e. combine both (b) and (d).
A light ray in air is incident on an air-to-glass boundary at an angle of 30.0° and is refracted in the glass at an angle of 16.7° with the normal. Find the index of refraction of the glass
a. 1.74 c. 1.23 b. 1.40 d. 2.13