Physics, 26.09.2019 06:10 hearteye769
It takes a pulse of light 35 microseconds to travel down a 5.0 km length of fiber optic cable. how fast does light move through the cable (in m/s)?
Answers: 1
Physics, 22.06.2019 00:10
The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?
Answers: 3
Physics, 23.06.2019 09:00
Momentum lab this lab uses a phet simulation. navigate to the phet momentum simulation. if you don’t see the image below when you click on the link, then you need to either enable adobe flash (click on the puzzle piece on your screen) or you need to install adobe flash (this is a free program). change the vectors to be momentum vectors only. they are yellow. make the mass of both balls the same. hit play and notice what happens to the momentum vectors before and after the collision. you might want to play the sim multiple times. click on restart or return balls to start over. to see numbers, check the show values box (inside the green box). red’s momentum vector before the collision is green’s momentum vector after the collision. question 1 options: shorter than longer than equal to question 2 (1 point) saved since green bounces off red, this must be an collision. question 2 options: explosion inelastic elastic question 3 (1 point) red transfers of its momentum to green during the collision. question 3 options: little all most none question 4 (4 points) why does red transfer all its momentum to green? back up your answer with information from the simulation. write at least 2 sentences.
Answers: 1
Physics, 23.06.2019 18:30
The chemical equation below shows the reaction of methane (ch4) and oxygen gas (o2) to form carbon dioxide (co2) and water (h2o). ch4 + 2o2 → co2 + 2h2o in this equation, which of the following are products? a. methane and oxygen gas b. carbon dioxide and methane c. carbon dioxide and water
Answers: 1
It takes a pulse of light 35 microseconds to travel down a 5.0 km length of fiber optic cable. how f...
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