Physics, 24.07.2019 01:10 Mathcat444
Some windows are made with a single pane of glass. other windows are made out of two panes that have a tiny pocket of air trapped between them. the two diagrams below show how heat flows from a warm room to the outside air though both types of windows. considering that convection is driven by differences in temperature, double-pane windows are most likely used to a. create a convection current from the inside air to the outside air. b. create a convection current from the outside air to the inside air. c. decrease the rate of heat flow to the outside air. d. increase the rate of heat flow to the outside air.
Answers: 1
Physics, 22.06.2019 00:20
In the derivation of rrkm theory, a factor of 1/2 is introduced when equalizing the rates of formation and decomposition of activated complex as keal-hr) = ko this is clearly against the assumption of transition state theory that states all the activated complex in the transition state iss going to the product. find the reason why this factor is introduced here.
Answers: 2
Physics, 22.06.2019 21:00
Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2
Answers: 1
Physics, 22.06.2019 22:00
Which best term to describe a chemical reaction that absorbs energy from its surroundings? a.thermal conductor b.thermal insulator c.endothermic d.exothermic
Answers: 1
Physics, 22.06.2019 22:20
The starship enterprise is caught in a time warp and spock is forced to use the primitive techniques of the 20th century to determine the specific heat capacity of an unknown mineral. the 125-g sample was heated to 96.3Β°c and placed into a calorimeter containing 85.9 g of water at 20.0Β°c. the heat capacity of the calorimeter was 14.2 j/k. the final temperature in the calorimeter was 24.5Β°c. what is the specific heat capacity (in j/gΒ°c) of the mineral? enter to 4 decimal places.
Answers: 1
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