Posted by **olive** on Tuesday, May 4, 2010 at 9:12pm.

How long would it take a 1 200 W heater to melt 1.00 kg of ice at -12.0°C, assuming all the energy from the heater is absorbed by the ice? (Assume the specific heat of the ice is 2 090 J/kg · °C and the latent heat of fusion of water is 3.33 105 J/kg.)

what formula do you use, the fact it asks for time, throws me off

- physics -
**drwls**, Wednesday, May 5, 2010 at 1:55am
Calculate the number of Joules of heat required (Q), using the mass, specific heat of ice, temperature rise and latent heat of fusion.

Q = M[10 C(ice) + Latent heat]

= 1.00[10*2090 + 3.33*10^5]

= 3.54*10^5 J

Then divide that by the heating rate in Watts (J/s) for the answer in seconds.

## Answer This Question

## Related Questions

- Physics - How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg ...
- Physics - How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg ...
- Physics - How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg ...
- Physics - How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg ...
- AP Physics - You go to kitchen to boil water. You pour 280 gram of water to a ...
- physics - Ice of mass 11.0 kg at 0.00° C is placed in an ice chest. The ice ...
- physics - The Weistin Stamford Hotel in Detroit is 228 m tall. Suppose a piece ...
- physics - The formation of condensation on a glass of ice water causes the ice ...
- Physics HELP! - 2. Suppose you pour 15 g of hot water (at 55 oC) into a glass ...
- Physics - 2. Suppose you pour 15 g of hot water (at 55 oC) into a glass that ...

More Related Questions