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
JulsSmile [24]
3 years ago
13

An automatic dryer spins wet clothes at an angular speed of 5.2 rad/s. Starting from rest, the dryer reaches its operating speed

with an average angular acceleration of 3.2 rad/s². How long does it take the dryer to come up to speed?
Physics
1 answer:
Dvinal [7]3 years ago
6 0
<h2>Time taken by dryer to come up to speed is 1.625 seconds.</h2>

Explanation:

We have equation of motion v = u + at

     Initial velocity, u =  0 rad/s

     Final velocity, v = 5.2 rad/s    

     Time, t = ?

     Acceleration, a = 3.2 rad/s²

     Substituting

                      v = u + at  

                      5.2 = 0 + 3.2 x t

                      t = 1.625 s

Time taken by dryer to come up to speed is 1.625 seconds.

You might be interested in
Who was the last person to step on the moon?
Pavlova-9 [17]
Eugene Cernan was not the last, but he was the most recent.
5 0
3 years ago
Read 2 more answers
Hang two sheets of paper vertically from adjacent corners. The sheets should be parallel and close to each other with a small ga
Mrrafil [7]

Answer:

a. The sheets move toward each other and the gap narrows.

Explanation:

This exercise is related to fluid mechanics, when blowing between the two sheets, we can apply Bernoulli's equation, where the index 2 is the space between the two sheets

       P₁ + ½ ρ g v₁² + ρ g y₁ = P₂ + ½ ρ g v₂² + ρ g y²

if the two leaves are at the same height

                      y₁ = y₂

 whereby

         P₁ + ½ ρ g v₁² = P₂ + ½ ρ v₂²

for the air velocity between the leaves let us use the continuity equation

        A₁ v₁ = A₂ v₂

the area between the leaves is less than the external area, so the air speed must increase. If we use this in Bernoulli's equation, increasing the speed 2 (between the leaves) to maintain equality the pressure must decrease.

If the pressure decreases, the blades should move closer

When resisting the answers, the correct one is  a

4 0
3 years ago
Which statement identifies the chemical property of iron that results in the formation of rust?
Maru [420]

Answer:

B, It reacts with oxygen to form a new substance

Explanation:

B

4 0
2 years ago
If you were trying to kill a fish with a spear, would you aim where you see the fish
34kurt
No, you would aim slightly above, because when you throw the spear and it travels through the air it will fall slightly downwards by the time it reaches the fish.
6 0
3 years ago
Molecules at room temperature move freely. What happens to the molecules when heat is removed until it freezes?
QveST [7]

molecules group together

3 0
3 years ago
Other questions:
  • In which ancient civilization did the sport of cucj originate
    12·1 answer
  • What surfaces are good absorbers of infrared radiation?
    11·2 answers
  • The weight of the block in the drawing is 97.0 N. The coefficient of static friction between the block and the vertical wall is
    15·1 answer
  • The factors that affects the gravitational force between two objects are
    7·1 answer
  • Describe the movement of air over 2 nearby land areas, one of which is heated more than the other.
    10·1 answer
  • If the tension in a rope is increased, what will happen to the speed of a wave traveling through the rope?
    13·2 answers
  • Jamie is writing a literary essay that examines the connection between a short story’s theme of deprivation and the author’s imp
    14·2 answers
  • Average wavelength of radio waves​
    13·1 answer
  • The equation that relates two poles to the force between them and their separation is the ____ square law.
    12·1 answer
  • A car starting at rest accelerates at 3m/s² How far has the car travelled after 4s?​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!