Which sugar is a chemically bonded combination of two other sugars?
a. Sucrose
b. Lactose
c. Glucose
d. Fructose
a
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Radioactive Decay: The unstable isotope 234Th decays by ? emission with a half-life of 24.5 days. If the initial decay rate of the sample is 6.2 × 1017 Bq, what is the decay rate after 37 days?
Fill in the blank(s) with the appropriate word(s).
If M = 1.1 kg, what is the tension in string 1?
A. 54 N B. 47 N C. 40 N D. 62 N E. 57 N
If the absolute temperature of an object is doubled, the thermal power radiated per unit surface area of this object will (assuming that its emissivity is not affected by the temperature change)
A) increase by a factor of 2. B) increase by a factor of 4. C) increase by a factor of 8. D) increase by a factor of 16. E) increase by a factor of 32.
A 4-ohm and 6-ohm resistor connected in parallel have an equivalent resistance of
A) 2.4 ohms. B) 4 ohms. C) 5 ohms. D) 5.5 ohms. E) 10 ohms.