Physics, 26.07.2019 21:30 superjoshuanucl

An aluminum cube of mass 44.25 g, at 22.3°c, is immersed in a styrofoam cup filled with ln2 at -195.8° c. after 120 seconds (sec), 34.50 g of ln2 evaporates due to heat transferred from the cube. calculate lv of ln2 (in units of calories and grams) and the rate r (calories/second) at which heat from the cube evaporates ln2. (note that the 34.50 g evaporated is due solely to the immersion of the cube, and not by heat transferring into the cup from the room.) use the accepted value of cal (for this temperature range) when calculating lv. use your calculated value of lv when calculating the rate r. show formulas and calculations.

Answers: 3

Show answers

Another question on Physics

Physics, 21.06.2019 20:00

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

Answers: 1

Answer

Physics, 22.06.2019 10:00

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points

Answers: 1

Answer

Physics, 22.06.2019 15:20

Talia is manufacturing rolls of wire for hanging pictures. she needs a material that is so that it can easily be pulled into wire without breaking.

Answers: 2

Answer

Physics, 22.06.2019 16:00

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.

Answers: 2

Answer

You know the right answer?

An aluminum cube of mass 44.25 g, at 22.3°c, is immersed in a styrofoam cup filled with ln2 at -195....

Questions