The graph below the variation of the temperature of 200 m s tiste seady rate
1
100
200
There's
a) Use the graph to state the melting point of lead
191
b) Explain why the graph is a straight line at the start
c) Explain what happens to the energy supplied to the land as it melts at a
constant temperature
1
d) The initial temperature of the lead is O'c. Use the graph to determine the local
energy supplied to the lead before it starts to mat. The specific heat capacity
of land is 130 J kg

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

While studying chemical reactions and conservation of matter, sarah's class conducted a variety of experiments. sarah and her lab partner found the mass of a wax candle and placed the candle in a flask. the students lit the candle and let it burn to completion. all that was left was wax and charred candle wick. per their teacher's instructions, the students found the mass of the products. their data can be seen in the data table. formulate a hypothesis the students could test to explain why the experiment did not support the law of conservation of matter. a) the students could repeat the experiment using different candles; there might have been a flaw in the candle. b) the experiment should be repeatable. the students should run several trials and then take an average of the after mass in each trial. c) the students should have someone in the class check their measurement skills as they repeat the experiment. they may have made an error using the balance. d) the students should burn the candle in a container that has some type of lid so that any gas that is a product of the reaction can be contained and massed. submit

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?