The lesser amount of a substance in a solution is generally called the
a. solute.
b. salt.
c. solvent.
d. alloy.
a
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Mary passes Mike from behind while bicycling. As she passes him,
A) the two have different speeds and different velocities. B) the two have the same speeds and the same velocities. C) Mike turns into a hippopotamus. D) the two have the same speeds but different velocities. E) the two have different speeds but the same velocities.
A projectile is fired from ground level at an angle of 40.0° above horizontal at a speed of 30.0 m/s. What is the speed of the projectile when it has reached a height equal to 50.0% of its maximum height?
A) 26.7 m/s B) 26.0 m/s C) 28.7 m/s D) 27.4 m/s E) 28.1 m/s
A narrow light beam in vacuum contains light of two wavelengths, 480 nm and 700 nm. It strikes a flat piece of glass at an angle of incidence of 60.000°. The index of refraction of the glass is 1.4830 at 480 nm and 1.4760 at 700 nm
Determine the angle between the two wavelengths as the light travels in the glass.
Emission nebulae like M42 occur only near stars that emit large amounts of:
A) visible light. B) microwaves. C) ultraviolet radiation. D) infrared heat. E) X-rays and gamma rays.