If a force of 10 N stretches a spring 10 cm, how far will the spring be stretche

Question

If a force of 10 N stretches a spring 10 cm, how far will the spring be stretched with a force of 30 N? How much beat energy is required to raise the temperature of 5 grains of water 10DegreeC? Two equal glasses of water arc silting in a room where the air temperature is 25DegreeC. The water in one glass is at 90DegreeC and the water in the other glass is al 50DegreeC. Which glass of water will reach room temperature first? Which of the following materials is the best conductor of beat Almost all materials contract when cooled An exception is: (true or false) Heat naturally flows from a higher-temperature substance to a lower-temperature substance A beat engine operates between temperatures of 1000 K and 800 K. What is its ideal efficiency ? The latent heat of fusion of ice is 80 calories/gm. the specific heat of water is I calorie/gm DegreeC, and the latent heat of vaporization is 540 calories/gm. How much heat energy is needed to change 10 gm of ice at 0DegreeC to steam at 100DegreeC?

Explanation / Answer

Force, F = kx, where k is the spring constant and x is the extension or compression in the spring's length.

Given, F = 10N, then x = 10 cm = 0.1m,

therefore, k = F/x = 10/0.1 = 100N/m

Now, when F = 30N, x = 30/100 = 0.3m = 30cm (Answer)

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