Physics, 16.04.2020 20:03, natashawetzel5961
An enormous thunderstorm covers Dallas-Ft. Worth. Your best friend Clark is a storm chaser and heads to the center of the storm to take some readings while you stay dry at home. While Clark is at the center of the storm, he sees and hears lightning strike a tree that is 165 m from where he is standing. You are 123 km from the tree. How long does it take for the sound to reach Clark? Assume the speed of sound is 343 m/s.
Answers: 2
Physics, 22.06.2019 11:00, taylorwhitfield6
Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?
Answers: 1
Physics, 22.06.2019 12:50, starr3971
Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.
Answers: 2
Physics, 23.06.2019 03:00, Daddysgirl2019
There are 3 ways heat can be transferred: through solids, called , through liquids and gases , called , and through electromagnetic waves, called
Answers: 1
Physics, 23.06.2019 05:20, leahstubbs
Derive the formula 2as=v² -u² where the formula have have usual meanings
Answers: 1
An enormous thunderstorm covers Dallas-Ft. Worth. Your best friend Clark is a storm chaser and heads...
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