How much water at 20 degrees Celsius is needed to melt 500 grams of ice at 0 degree Celsius?

a. 500 grams
b. 1000 grams
c. 1500 grams
d. 2000 grams


Answer: a. 500 grams

Physics & Space Science

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Imagine a steel pipe that doesn't leak from the sides and is already filled with water. Water enters at a rate of 2 kg/s but leaves at a rate of 1 kg/s. Which of the following is true?

A. The water pressure inside the tube rises as water is added B. The water flow must be laminar C. The tube is narrower where the water enters than where it leaves D. It is not possible for this situation to occur

Physics & Space Science

What is the primary determinant of whether a planet resides in the "habitable zone" of a planetary system?

What will be an ideal response?

Physics & Space Science

A flask half filled with water is on a weighing scale. If you float a piece of wood in it, the scale reading will be

A) less. B) the same. C) greater.

Physics & Space Science

The Fahrenheit scale has a ______________ degree size than the Celsius scale

Fill in the blank(s) with correct word

Physics & Space Science