Jsquad8879
17.03.2020 •
Physics
A new interstate highway is being built with a design speed of 120 km/h. For one of the horizontal curves, the radius (measured to the innermost vehicle path) is tentatively planned as 300 m. The limiting value for coefficient of side friction at 120 km/h is 0.09. What rate of superelevation is required for this curve at the 120 km/h design speed
Solved
Show answers
More tips
- C Computers and Internet What is the Meaning of lol and How Did it Become Popular?...
- C Computers and Internet Clearing Cache: How to Speed Up Your Browser...
- H Health and Medicine How to Help Men Gain Weight?...
- F Family and Home How to Build a Strong Relationship with Your Child: Tips for Effective Communication...
- L Legal consultation Juvenile Justice: Who Needs It?...
- F Food and Cooking What age is appropriate for giving your child cocoa?...
- A Animals and plants Why do cats go crazy over catnip?...
- H Health and Medicine How to Cure Adenoids?...
- S Science and Technology Why is there no gravity on other planets?...
- F Food and Cooking How to Properly Wash a Down Jacket? Tips from Experts...
Answers on questions: Physics
- P Physics Select the correct answer. the sun generates both mechanical and electromagnetic waves. which statement about those he sun generates both mechanical and ecdo no a. the mechanical...
- P Physics The loudness of sound is determined by the of vibration...
- P Physics Calculate the magnitude of the normal force on a 25.2 kg block in the following circumstances. (enter your answers in n.) hint (a) the block is resting on a level surface. n (b)...
- P Physics Astationary police car emits a sound of frequency 1240 hz that bounces off of a car on the highway and returns with a frequency of 1265hz . the police car is right next to the highway,...
- P Physics Aprojectile (mass = 0.15 kg) is fired at and embeds itself in a stationary target (mass = 2.44 kg). with what percentage of the projectile s incident kinetic energy does the target...
- P Physics A25 kg child bounces on a pogo stick. the pogo stick has a spring with spring constant 2.0x10^4 n/m. when the child makes a nice big bounce, he finds that at the bottom of the bounce...
- P Physics When a molecule absorbs an infrared photon it contributes to the of that molecule....
- P Physics The gravity on planet ais 15.6 m/s the mass of an object is 740 grams, what is the weight of theobject on this new planet?...
- P Physics NaOH + FeCl3* Na Cl + Fe 10H)3 balanced...
- S Social Studies Which of these was an argument for the new jersey plan? a. it allowed slaves to have representation in congress. b. it provided too much power to the states in wartime. c. it gave...
Ответ:
28.79%
Explanation:
Given
Design Speed, V = 120km/h = 33.33m/s
Radius, R = 300m
Side Friction, Fs = 0.09
Gravitational Constant = 9.8m/s²
Using the following formula, we'll solve the required rate of superelevation.
e + Fs = V²/gR where e = rate
e = V²/gR - Fs
e = (33.33)²/(9.8 * 300) - 0.09
e = 0.287853367346938
e = 28.79%
Hence, the required rate of superelevation for the curve is calculated as 28.79%
Ответ:
Magnitude of the impulse = 75 Ns
Explanation:
Given:
Force exerts = 1500 N
Time = 50 ms = 0.05 s
Find:
Magnitude of the impulse
Computation:
Magnitude of the impulse = Force x Time
Magnitude of the impulse = 75 Ns