Physics, 28.05.2020 06:58 mathlady12

5. Find the quantity of heat required to melt completely 200g of lead initially at 27C given that, for lead: melting point = 327 C, mean specific heat capacity = 0.14 j/kg , specific latent heat of fusion = 270j/kg.

If the heat is supplied to the lead at rate of 30 joules per second find:
a) the time taken to bring the lead to its melting point
b) the additional time required to melt it.

Answers: 2

Show answers

Another question on Physics

Physics, 21.06.2019 21:00

In the 1980's, congress authorized the u.s. department of energy to build the wipp facility in the chicuahuan desert in new mexico. what is the purpose of wipp?

Answers: 2

Answer

Physics, 22.06.2019 02:00

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.

Answers: 2

Answer

Physics, 22.06.2019 05:30

Describe uniform velocity and variable velocity in short

Answers: 1

Answer

Physics, 22.06.2019 07:00

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?

Answers: 1

Answer

You know the right answer?

5. Find the quantity of heat required to melt completely 200g of lead initially at 27C given that, f...

Questions