Physics, 18.03.2021 18:50 trinity0929
The air in a living room has a mass of 60 kg and a specific heat (c) of 1,020 J/kg oC. What is the change in thermal energy (Q) of the air when it warms from 20 oC to 25 oC?
Answers: 1
Physics, 21.06.2019 19:30
Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s
Answers: 1
Physics, 21.06.2019 22:30
An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
Answers: 1
Physics, 22.06.2019 02:10
How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by
Answers: 2
Physics, 22.06.2019 02:30
Awave travels at a speed of 5.2 m/s. if the distance between crests is 0.40 m, what is the frequency of the wave? use f=v/wavelength a. 13 hz b. 2.1 hz c. 0.077 hz d. 5.6 hz
Answers: 1
The air in a living room has a mass of 60 kg and a specific heat (c) of 1,020 J/kg oC. What is the c...
Mathematics, 22.01.2021 19:30
History, 22.01.2021 19:30
Mathematics, 22.01.2021 19:30
Mathematics, 22.01.2021 19:30
History, 22.01.2021 19:30
Mathematics, 22.01.2021 19:30
History, 22.01.2021 19:30
Mathematics, 22.01.2021 19:30
History, 22.01.2021 19:30
Computers and Technology, 22.01.2021 19:30
Mathematics, 22.01.2021 19:30