If We Use 67 W of Power to Heat 148

question 46

Multiple Choice

If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of the water from 15°C to 25°C? The specific heat of water is 4190 J/kg•K.

• A) 93 s
• B) 5.3 s
• C) 22 s
• D) 114 h

---

Definitions:

Hong Kong Dollars

The official currency of Hong Kong, which is a Special Administrative Region of China.

Futures Price

The agreed-upon price between buyer and seller for the future delivery of an asset, utilized in future contracts.

Risk-free Rate

The theoretical return of an investment with zero risk, typically represented by the yield of government bonds of a stable country.

Spot Exchange Rate

The current price at which one currency can be exchanged for another.