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
Dominik [7]
3 years ago
15

An object travels in a circular path of radius 5.0 meters at a uniform speed of 10. m/s. What is the magnitude of the object's a

cceleration?
2.0 m/s/s
2.5 m/s/s
5.0 m/s/s
20. m/s/s
50. m/s/s
Physics
2 answers:
vladimir1956 [14]3 years ago
8 0
I think F= mv²/r
And F=ma
So, ma = mv²/r
a = v²/r
a = 100/5
a = 20 m/s
Genrish500 [490]3 years ago
4 0

Answer:

a = 20 m/s²

Explanation:

The magnitude of the acceleration of an object that moves in a circular path is given by:

a= \sqrt{(a_{t})^{2} +(a_{n})^{2} } Formula (1)

where:  

at = α*R : Formula (2)  :Tangential acceleration

ac = ω²*R :  Formula (3) : Centripetal acceleration

α : angular acceleration (rad/s²)  

ω: angular speed  (rad/s)  

R : is radius where the object is located from the center of the circular path

The tangential velocity of the body is calculated as follows:

v = ω*R  Formula (4)

where:  

v is the tangential velocity or linear velocity (m /s)  

ω is the angular speed (rad/s)  

R is radius where the body is located from the center of the circular path

Data

v = 10 m/s : tangential speed of the object (uniform)

R = 10 m

Calculating of ω  (angular speed)

We replace data in the formula (4)

v = ω*R

10 = ω*5

ω = 10 / 5

ω = 2 rad/s

Calculating of the Centripetal acceleration (ac)

We replace ω = 2 rad/s in the formula (3)

ac = ω²*R

ac = (2)²*(5)

ac = 20 m/s²

Calculating of  the tangential acceleration (at)

Because the magnitude of the tangential speed is uniform , then α=0

We replace α=0  in the formula (2)

at =α*R = 0*5

at = 0

Calculating of  the magnitude of the object's acceleration (a)

We replace :  at = 0 and ac = 20 m/s²  in the formula (1)

a= \sqrt{(0)^{2} +(20)^{2} }

a = 20 m/s²

You might be interested in
Why do sex cells contain only half the number of chromosomes needed for offspring? Explain
Bogdan [553]

Answer:

None, egg cells don't have chromosomes. No, sex cells do have chromosomes. Meiosis reduces chromosome number so that sex cells (eggs and sperm) have a half set of chromosomes–one homolog of each pair. This is the haploid number.

3 0
3 years ago
As the mass of an object increases, the weight of the object will ______?
Sergio039 [100]

Answer:

also increase

Explanation:

If the mass increases so will the weight.

4 0
3 years ago
In an experiment refractive index of glass was observed to be 1.45,1.56,1.54,1.44,1.54and1.53. Calculate mean value of refractiv
Sever21 [200]
The mean may be calculated by summing the values of the refractive index and dividing the sum by the number of experiments. This is:
Mean = (1.45 + 1.56 + 1.54 + 1.44 + 1.54 + 1.53)/6
Mean = 1.51

The mean absolute error is the sum of the absolute values of errors divided by the number of trials:
MAE = (|1.45-1.51|+|1.56-1.51|+|1.54-1.51|+|1.44-1.51|+|1.54-1.51|+|1.53-1.51|)/6
MAE = 0.043

The fractional error is the MAE divided by the actual value:
Fractional error = 0.043 / 1.51
Fractional error = 43/1510

The percentage error is the fractional error multiplied by 100:
Percentage error = 2.85%
7 0
3 years ago
What is a distraction that a pedestrian may engage in while crossing the street?
goldenfox [79]

Answer:

a dog walking or their phone rings or heard a neighbor talking to them

6 0
3 years ago
what is the energy of an electromagnetic wave that has a frequency of 8.0 x 10^15 Hz? Use the equation...
Katarina [22]

(C)

Explanation:

E = hf = (6.626×10^{-34}\:\text{J•s})(8.0×10^{15}\:\text{Hz})

= 5.3×10^{-18}\:\text{J}

4 0
3 years ago
Other questions:
  • Particles (mass of each = 0.40 kg) are placed at the 60-cm and 100-cm marks of a meter stick of negligible mass. This rigid body
    14·1 answer
  • Which of the following are likely to be affected by a magnet? Check all that apply.
    14·2 answers
  • You have a flashlight that uses 0.75 watts of power and requires 1.5 volt battery.How many joules of energy are used by the flas
    10·1 answer
  • What are chlorofluorocarbons and what impact do they have on the atmosphere?
    8·1 answer
  • A 100 meter rope is 20 kg and is stretched with a tension of 20 newtons. If one end of the rope is vibrated with small amplitude
    15·1 answer
  • What is the magnitude (in N/C) and direction of an electric field that exerts a 3.50 ✕ 10−5 N upward force on a −1.55 µC charge?
    15·1 answer
  • A kid drives 4 miles to the mall. If the speed limit is 45 miles/hr and the kid makes the trip in .03 hours. Is the kid breaking
    6·1 answer
  • Queremos diseñar un montacargas que pueda subir con una rapidez de 12 km/h una mas 700 kg hasta 40 m de altura en un minuto. Cal
    7·1 answer
  • All of the visible color light waves together result in____light​
    11·1 answer
  • explain why using a parabolic mirror for a car headlight throws much more light on the highway than a flat mirror.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!