To determine The temperature increase of the block after one hour. Explanation Write the expression for the energy of the electron beam. E = m ( 0.732 c ) 2 (1) Here, m is the mass of the electron beam and c is the speed of light . Write the expression for the mass of the copper block. m ′ = ρ V (2) Here, ρ is the density of the copper and V is the volume. Write the expression for the increase in temperature of the block after one hour. Δ T = E m c (3) Here, c is the speed of light. Conclusion: Substitute 2.14 × 10 11 e for m and 3 × 10 8 m / s for c in equation (1). E = ( 2.14 × 10 11 e ) ( 0.732 ) 2 ( 3 × 10 8 m / s ) 2 = ( 2.14 × 10 11 e ) ( 9.11 × 10 − 31 kg / e ) ( 0.813 ) 2 ( 3 × 10 8 m / s ) 2 = ( 1.22985 × 10 − 19 kg ) ( 0.146 kg ) ( 0.813 ) 2 ( 3 × 10 8 m / s ) 2 ( 3600 s 1 h ) = 33

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The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot mov…

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Chapter 2, Problem 60P

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The temperature increase of the block after one hour.

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