Physics, 16.11.2019 07:31 awesomegrill
Ahighway curves to the left with radius of curvature of 31 m and is banked at 24 ◦ so that cars can take this curve at higher speeds. consider a car of mass 1029 kg whose tires have a static friction coefficient 0.76 against the pavement. how fast can the car take this curve without skidding to the outside of the curve? the acceleration of gravity is 9.8 m/s 2 . answer in units of m/s.
Answers: 2
. Now analysing the free body diagram for tires car, we can find:
, and 
. Then applying Newton's second law we get:
and 
, and replacing ax and ay we can find F and N as:
and
. But the car has to take the curve without skidding so 
so that replacing F and N in this equation we get:
. Finally replacing the values and solving for vmax we can find the higher speed as:
.
.
.
Another question on Physics
Physics, 22.06.2019 14:30
What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?
Answers: 1
Physics, 22.06.2019 17:40
Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.
Answers: 2
Physics, 22.06.2019 22:00
The inside surface of a cylindrical-shaped cave of inner diameter 1.0 m is continuously covered with a very thin layer of water. the cave is very long and it is open on both ends. the water on the cave surface is at a constant temperature of 15.5 °c. the cave is constantly exposed to wind such that 15.5 °c air flows through the cave at 4.5 m/s. the kinematic viscosity of the air is 14.66 x 10-6 m2/s and the molecular diffusion coefficient of water vapor in the air is 0.239 x 10-4 m2/s. because the cave diameter is so large, the flow of wind down the length of the cave, in the x direction, can be treated like it is external flow and the cave surface can be approximated as flat where appropriate. calculate the x value, in a) the transition to turbulent flow occurs at rex meters, where the air flow transitions from laminar to turbulent along the inside surface of the cave b) calculate the x value, in meters, where the bulk steady state concentration of water vapor in the air flowing in the cave is 10% of the saturation concentration. assume the air at the surface of the water layer is 100% saturated with water vapor. assume the wind entering the cave contained no moisture before it entered the cave. take into account the transition from laminar to turbulent flow when solving part b
Answers: 1
You know the right answer?
Ahighway curves to the left with radius of curvature of 31 m and is banked at 24 ◦ so that cars can...
Questions
Physics, 28.01.2020 21:43
Mathematics, 28.01.2020 21:43
Mathematics, 28.01.2020 21:43
History, 28.01.2020 21:43
English, 28.01.2020 21:43
English, 28.01.2020 21:43
Biology, 28.01.2020 21:43
History, 28.01.2020 21:43
