Answers: 2
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 31.0Β° above the horizontal. it then moves 127 ft at an angle of 46.0Β° 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 13:30
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
Physics, 22.06.2019 17:50
If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around
Answers: 2
All pressure topics in physics...
Geography, 23.07.2019 11:00
Biology, 23.07.2019 11:00
Chemistry, 23.07.2019 11:00
History, 23.07.2019 11:00
History, 23.07.2019 11:00
History, 23.07.2019 11:00
Geography, 23.07.2019 11:00
Physics, 23.07.2019 11:00
History, 23.07.2019 11:00
Health, 23.07.2019 11:00
History, 23.07.2019 11:00
Computers and Technology, 23.07.2019 11:00
Social Studies, 23.07.2019 11:00
Geography, 23.07.2019 11:00
Chemistry, 23.07.2019 11:00