The time it takes for one-half of a sample of a radionuclide to decay is called its ______________
Fill in the blank(s) with correct word
half-life
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The most energy-efficient form of transportation in the animal kingdom is a human on a bicycle. A basic physics principle that helps explain the bicycle's high efficiency is
A) the law of inertia. B) the electromagnetic force law. C) the work-energy principle. D) the law of conservation of energy. E) the law of gravity.
A car is driven 1200 m north at 20.0 m/s and then driven 1600 m east at 25.0 m/s. What are the magnitude and direction of the displacement for this trip?
a. 1400 m, northeast b. 2000 m, 36.9° north of east c. 2000 m, 53.1° north of east d. 2800 m, 36.9° east of north e. 2800 m, 53.1° east of north
A bubble having a diameter of 1.00 cm is released from the bottom of a swimming pool where the depth is 5.00 m. What will the diameter of the bubble be when it reaches the surface? The temperature of the water at the surface is 20.0°C, whereas it is 15.0°C at the bottom. (The density of water is 1.00 × 10^3 kg/m3.)
a. 1.05 cm b. 1.15 cm c. 1.45 cm d. 1.65 cm e. 1.35 cm
Which is the greater amount for medication measured by mass?
A) 1 gram B) 1000 milligrams C) both the same