For a scientific experiment a physicist must make sure that the temperature of a metal 0°Cgets no colder than -80°C. The physicist changes the metals temperature at a steady rate of -4°C per hour. For

asked Nov 2, 2020 188k views

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4 votes

80/4=20 so he can change the temperature for 20 hours

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6 votes

think and you will succeed

Kevin Mathew answered Nov 8, 2020

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