1)How much energy in J has been dissipated by the time the mass comes to a rest?

Question

1)How much energy in J has been dissipated by the time the mass comes to a rest?

E = .65 J

2)What is the mass of water in the container in kg ?

m(water) =10 kg

3)Assuming that the water with the block are thermally isolated from their surroundings, by how much will their temperature increase? Express your answer in C . You will need the values of the heat capacity: c(water)=4186 J/kg*C , c(iron)=448 J/kg*C .

Delta T = ___________________ c

An iron block of the mass 1 kg is suspended on a spring with a spring constant equal to 130 N/m , and merged into a vessel with 10 liters of water. The mass is displaced by 10 cm from its equilibrium position, and released. How much energy in J has been dissipated by the time the mass comes to a rest? What is the mass of water in the container in kg? m(water) =10 kg Assuming that the water with the block are thermally isolated from their surroundings, by how much will their temperature increase? Express your answer in C . You will need the values of the heat capacity: c(water)=4186 J/kg*C , c(iron)=448 J/kg*C.

Explanation / Answer

1.)Energy dissipiated=1/2*K*x^2

=1/2*130*0.1^2

=0.65 J ans

2.)mass=density*volume

=1000*10*10^-3

=10 Kg

3.)10*4186*detaT=0.65

deltaT=1.55*10^-5 K ans

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