1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
poizon [28]
3 years ago
14

What is the maximum speed at which a car can safely travel around a circular track of radius 75.0 m if the coefficient of fricti

on between the tire and road is 0.200?
A) 3.87 m/s
B) 12.1 m/s
C) 15.0 m/s
D) 147 m/s
Physics
1 answer:
Rina8888 [55]3 years ago
3 0

Answer:

B) 12.1 m/s

Explanation:

Sum of the forces in the y direction:

∑F = ma

N − mg = 0

N = mg

Sum of the forces in the radial direction:

∑F = ma

F = m v² / r

Nμ = m v² / r

Substituting and solving for v:

mgμ = m v² / r

gμ = v² / r

v = √(gμr)

Given that μ = 0.200 and r = 75.0 m:

v = √(9.81 m/s² × 0.200 × 75.0 m)

v = 12.1 m/s

You might be interested in
A scientist studies the impact of a drug on cancer.
xeze [42]

answer -

its both so write this

The independent variables are the administration of the drug - the dosage and the timing. The dependent variable is the impact the drug has on cancer.

7 0
3 years ago
If the error in the angle is 0.50, the error in sin 90o is​
Sindrei [870]

At the given erro in angle, the error in the measurement of sin 90 degrees would be 0.001.

<h3>Percentage error</h3>

The percentage error of any measurement is obtained from the ratio of the error to the actual measurement.

The error of sin 90 degrees is calculated as follows;

sin 90 = 1

error in measurement = sin(90 - 0.5)

error in measurement = sin(89.5) = 0.999

<h3>Error in sin 90 degrees</h3>

Error in sin 90 degrees = 1 - 0.999

Error in sin 90 degrees = 0.001

Thus, at the given erro in angle, the error in sin 90 degrees would be 0.001.

Learn more about error in measurement here: brainly.com/question/26668346

4 0
2 years ago
How much time will it take for a bug to travel 2 meters across the floor if it is traveling at 0.5 m/s?
Lelu [443]

Answer:

it will take 4 seconds to travel 2 meters.

3 0
3 years ago
What sport is better for girls volleyball or softball?
kipiarov [429]
Either one is fun and great to play!
3 0
3 years ago
Read 2 more answers
What would happen if i put in different colors in the washer with hot water?
xxTIMURxx [149]
Probably it whould separate becase hot water departs things! Hope this helps
4 0
3 years ago
Other questions:
  • A bungee jumper with mass 60.0 kg jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting
    10·2 answers
  • A sled and rider with a combined mass of 70 kg are at the top of a hill that rises 9 m above the level ground below. The sled is
    12·1 answer
  • Are any rocks that form from another rock as a result of change in blank or blank
    5·1 answer
  • Suppose the average mass of each of 20,000 asteroids in the solar system is 1017 kg. Compare the total mass of these asteroids t
    10·1 answer
  • A flowerpot weighing 2 kilograms, what will be its speed at the end of 5 seconds?
    8·1 answer
  • An object is pulled with two forces, 10 N northward and 15 N southward. The direction of the net force is to the An object is pu
    9·1 answer
  • Describe Lenz's law.
    11·1 answer
  • If the refractive index of a medium is 1.3,
    9·2 answers
  • How does the electric force between two charged particles change if the
    12·1 answer
  • 7. A 78-kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!