Physics, 06.11.2019 00:31 zaynmaliky4748
The mine car and its contents have a total mass of 5.5 mg and a center of gravity at g. if the coefficient of static friction between the wheels and the tracks is μs = 0.4 when the wheels are locked, find the normal force acting on the front wheels at b and the rear wheels at a when the brakes at both a and b are locked. does the car move?
Answers: 1
Physics, 22.06.2019 20:00
In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm
Answers: 1
Physics, 22.06.2019 22:00
Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.
Answers: 3
Physics, 23.06.2019 00:00
Which is an advantage of subdividing science into different areas?
Answers: 3
Physics, 23.06.2019 00:30
Language is not the only way that humans communicate. describe how we use sound, touch, chemicals, and sight to communicate. need answer asap
Answers: 2
The mine car and its contents have a total mass of 5.5 mg and a center of gravity at g. if the coeff...
Mathematics, 09.05.2021 02:20
Mathematics, 09.05.2021 02:20
Mathematics, 09.05.2021 02:20
History, 09.05.2021 02:20
Arts, 09.05.2021 02:20
History, 09.05.2021 02:20
Physics, 09.05.2021 02:20
Mathematics, 09.05.2021 02:20
Mathematics, 09.05.2021 02:20
Chemistry, 09.05.2021 02:20
History, 09.05.2021 02:20
History, 09.05.2021 02:20