The metrical the has the highest specific heat is A. ice B. gold C. water D. Pla

Question

The metrical the has the highest specific heat is A. ice B. gold C. water D. Platinum The power radiated by a surface is proportional to the forth power of the absolute temperature. If the temperature is then the power redirected increases by A. 2 B. 4 C. 8 D. 16 A load of 1000N is attached at the end of a spring which stretches by 100cm. What is the value of K? A. 1000 N/m B. 1000 N/cm C. 10000 N/m D. Non enough The periodic time for a simple pendulum is T on earth. On the moon, whole g is less than g on earth, the periodic time on the moon will be: A. less than an earth B. greater than on earth C. Same D. none of the above The periodic time T of a wave is 10.0 seconds and its wavelength is 3.00 m. The speed of this wave in m/s will be: A. 30 B. 0.03 C. 3.0 D. 03

Explanation / Answer

34) ice =2090 J/kg.oC

water = 4186 J/kg.oC

gold =129 J/kg.oC

platinium = 133 J/kg.oC

correct option is (C)

35) P = Ae*sigma*T^4

T2 =2T1

P2/P1 = 16

correct option is (D)

37) F = 1000 N , X = 100 cm

F =kx

1000 = 1*k

k = 1000 N/m

correct option is (A)

38) T = 2pi(L/g)

gE > gM

TE < TM

correct option is (B)

39) T = 10 s , lamda = 3 m

v = lamda/T

v = 3/10 = 0.3 m/s

correct option is (D)

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