The material that has the highest specific heat is A. ice B. gold. c. Water D. P

Question

The material that has the highest specific heat is A. ice B. gold. c. Water D. Platinum The power radiated by a surface is proportional to the fourth power of the absolute temperature. If the temperature is doubled then the power reduced increase by A. 2 B. 4 C. 8 D. 16 A Load of 100 N is attached at the end of a spring which stretches by 100 cm. What is the volume of k? A. 1000 N/m B. 1000N/cm C. 1000 N/m D. Not enough info The periodic time for a simple pendulum is T on earth. On the moon, who g is less than g on earth, the periodic time on the moon will be: A. less than on earth B. greater than on earth C. same D. moon of the above The periodic time T of a wave is 10.0 seconds and its wavelength is 3.00m. The speed of this wave in m/s will be: A. 30 B. 0.03 C. 3.0 D. 0.3

Explanation / Answer

34 water

35 since it depends on forth power of the temperature so the power will become 16 times if the temperature is incresed twice

36 k=f/x here f=1000N/M2 & x=100 cm= 1 m.so k=1000N/M2

37 t is inversely proportional to g^0.5 so as g decreas the time period will increase on moon

38 Vwave =wavelength/timeperiod= 3/10=0.3 m/s ans

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