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Question:

science homework- work and power show your work easily please?

i need help with this please show your work- A 50 N girl climbs the flight of stairs in 3 seconds.WorkPowerPlease explain what you did too :)oh and this is a challenge-A crane lifts a load of steel that weighs 9.3 x 10(with a 5 as an exponent) N a distance of 100 mIt takes 5 minutes to complete the task.a.How much work is done by the crane?bHow much power does the crane produce?

Answer:

Yes you can freeze butterIt is best to over wrap it or place in sealed plastic bag in original container to prevent it absorbing extraneous odorsBest used within 6 months but can be kept longerDefrost in refrigerator prior to use.
Yes just make sure you bag it in a ziploc baggy to keep out the other smells
yes you can freeze butter ,but you don't need to it takes a long time before butter goes rancid.
Yes its ok to freeze butterTry not to store it next to anything that may be very fragrantsuch as fish, curry powder, as it will take on the flavorI buy butter in bulk when it goes on sale and store in the freezer for several months at a time.
1.] a.) Work (50 N)(height of the stairs in meters) - you did not supply the height info.;the answer will be in joules b.) Power (Work calculated above / 3 sec) - answer will be in watts 2.] a.) Work (9.3 x 10^5 N)(100 m) 9.3 x 10^7 J Note: 100 10^2; the ^ symbol means raised to the exponent Note: (10^5)(10^2) 10^7; the exponents add because they have a common base, which is 10 b.) Power (9.3 x 10^7 J) / [(5 minutes)(60 sec/min)] 3.1 x 10^5 Watts Note: 1 Watt 1 W 1 Joule / second 1 J/s

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