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
inn [45]
2 years ago
12

A ball is swung in a horizontal circle at a constant speed. Each circle takes 0.85 seconds to complete and the rope is 0.40 m lo

ng. What is the centripetal acceleration?
Physics
1 answer:
BaLLatris [955]2 years ago
7 0

Answer:

The centripetal acceleration will be "21.785 m/s²".

Explanation:

The given values are:

Time,

t = 0.85 seconds

Length of rope,

r = 0.40 m

Mass of ball,

m = 0.80 kg

As we know,

⇒ w=\frac{2 \pi}{t}

On substituting the values, we get

⇒      =\frac{2\times 3.14}{0.85}

⇒      = \frac{6.28}{0.85}

⇒      =7.38 \ rad/s^2

The centripetal acceleration will be:

⇒  a=r\times w^2

⇒     =0.40\times (7.38)^2

⇒     =0.40\times 54.46

⇒     =21.785 \ m/s^2

You might be interested in
PLS HELP ASAP!
Oduvanchick [21]

2.09sec

Add them together then divide by three because there are three numbers

4 0
3 years ago
Which organism is a producer<br> 1-oak tree<br> 2-mushroom<br> 3-mountain lion<br> 4-butterfly
Leni [432]

Answer: Oak tree

Explanation: mushroom is a decomposer, mountain lion and butterfly are animals, so they must consume

3 0
3 years ago
Read 2 more answers
Give an example of when your average speed would be higher than instantaneous speed
brilliants [131]

When I drive to the office, I drive through two school zones,
and four intersections that are controlled by traffic lights.

My average speed for the trip is higher than my instantaneous
speed is at any point in the school zones, or at any time when
I'm waiting for a red light to change.

3 0
3 years ago
X-component of length 5 and a y-component of length 4. What is the angle of the vector?
yKpoI14uk [10]
The direction of the vector with respect to the x-axis
is the angle whose tangent is      (4/5) .

             Arctan(4/5) = 38.7°  counterclockwise from the x-axis.
4 0
3 years ago
Suppose a vacuum cleaner uses 120 J of electrical energy. If 45 J are used to pull air into the vacuum cleaner, how efficient is
Zigmanuir [339]
Efficiency = 45J/120J = 0.375

Or

0.375 * 100% = 37.5 %
3 0
3 years ago
Other questions:
  • Hey guys I really really need help with this question for ASAP! Explain what chart junk is and how it differs from the kind of i
    13·2 answers
  • How many gallons of water per day does the average American family of 4 use?
    13·2 answers
  • A box of weight 50 N is at rest on a floor where the coefficient of static friction is 0.20. A rope is attached to the box and p
    9·1 answer
  • What force keeps an object moving in a circle
    11·1 answer
  • Which of the answer choices best defines mixture?
    10·1 answer
  • Who is the president of kenya​
    13·2 answers
  • what are known as the properties of substances that help describe a substance et does not change that substances?
    14·1 answer
  • Which is NOT an effect of friction?
    12·1 answer
  • Select the correct answer. In a given chemical reaction, the energy of the products is greater than the energy of the reactants.
    5·1 answer
  • There are several ways to model a compound. One type of model is shown.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!