How much energy, in joules, is needed to raise the temperature from 25.87°c to 33.16°c in a 2.66 kg block of each of the following materials? silver has a specific heat of 0.235 j/g·k, iron has a specific heat of 0.449 j/g·k, and titanium has a specific heat of 0.522 j/g·k. (a) silver

(a) Silver, H = 455.67 J

(b) Iron, H = 870.67 J

(c) titanium, H = 1012.23 J

Explanation:

mass of block, m = 2.66 kg = 266 g

T1 = 25.87° C

T2 = 33.16° C

ΔT = T2 - T1 = 33.16 - 25.87 = 7.29° C

(a) Specific heat of silver, c = 0.235 J/g K

The heat required is given by

H = m x c x ΔT

H = 266 x 0.235 x 7.29 = 455.67 J

(b) Specific heat of iron, c = 0.449 J/g K

The heat required is given by

H = m x c x ΔT

H = 266 x 0.449 x 7.29 = 870.67 J

(c) Specific heat of titanium, c = 0.522 J/g K

The heat required is given by

H = m x c x ΔT

H = 266 x 0.522 x 7.29 = 1012.23 J

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

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the answer is b ) square root of 5