The door is 1980 mm high, 760 mm wide, 5 cm thick, and the density of steel is 7.85 gcm3. what is the mass of the door? 3 . 99 o 76 ao-0s * 7.35 o 9/ h 11. given that the heat capacity of steel is 502 jkg'k-1, determine the amount of energy required to reach the melting point of steel at 3700 c i. 09 12. given that the latent heat of fusion of steel is 251 kjkg1, determine the energy required to change the steel from the solid state to the liquid state at 3700 c 0-14 x10

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

What are two different ways you could find the value of a? explain these methods.

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.