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
Inessa [10]
3 years ago
14

A disk of radius 14 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 8.2 rad/s2. Wh

at are the following values at t = 10.0 s?(a) the angular velocity of the diskrad/s(b) the tangential acceleration at and the centripetal acceleration ac of a point at the edge of the diskat = m/s2ac = m/s2
Physics
1 answer:
ss7ja [257]3 years ago
6 0

Answer:

a) the angular velocity is ω= 82 rad/seg

b) the tangencial acceleration is a = 1.148 m/s²

c) the centripetal acceleration is ac = 941.36 m/s²

Explanation:

for rotational motion

ω= angular velocity

ωo = initial angular velocity

α= angular acceleration

t = time

R= radius

a= tangencial acceleration

ac = centripetal acceleration

a) ω= ωo + α*t = 0 + 8.2 rad/s2 * 10 s = 82 rad/seg

b) a= α*R =  8.2 rad/s2* 14 cm = 114.8 cm/s² = 1.148 m/s²

c) ac= ω²*R =  (82 rad/seg)² * 14 cm = 94136 cm/s² = 941.36 m/s²

You might be interested in
Which of the following is the MOST common cause of death in middle adulthood?
Anestetic [448]
Suicide. I hope this helps!!

6 0
3 years ago
Read 2 more answers
Water, which we can treat as ideal and incompressible, flows at 12 m/s in a horizontal pipe with a pressure of 3.0 x 10^4 Pa. If
frez [133]

Answer:

p2 = 9.8×10^4 Pa

Explanation:

Total pressure is constant and PT = P = 1/2×ρ×v^2  

So p1 + 1/2×ρ×(v1)^2 = p2 + 1/2×ρ×(v2)^2

from continuity we have ρ×A1×v1 = ρ×A2×v2  

v2 = v1×A1/A2  

and  

r2 = 2×r1

then:

A2 = 4×A1  

so,

v2 = (v1)/4  

then:

p2 = p1 + 1/2×ρ×(v1)^2 - 1/2×ρ×(v2)^2 = p1 + 1/2×ρ×(v1)^2 - 1/2×ρ×(v1/4)^2  

p2 = 3.0×10^4 Pa + 1/2×(1000 kg/m^3)×(12m/s)^2 - 1/2×(1000kg/m^3)×(12^2/16)  

     = 9.75×10^4 Pa

    = 9.8×10^4 Pa

Therefore, the pressure in the wider section is 9.8×10^4 Pa

5 0
3 years ago
Sound waves travel faster through air than through solids.<br> a. True<br> b. False
WINSTONCH [101]
I believe the answer is true
7 0
3 years ago
Which pattern do you find easy to conduct?​
Brut [27]
  • <em>The numbers represent the beats in each measure</em>
  • <em>The arrows represent the direction of movement between beats</em>
  • <em>The word out represents a movement away from your body.</em>
  • <em>The word in represents a movement towards the center of your body.</em>
4 0
3 years ago
Two objects, one of mass m and the other of mass 2m, are dropped from the top of a building. If there is no air resistance, when
Lelechka [254]

Answer:

option b

Explanation:

the heavier one will have twice the kinetic energy of the lighter one

5 0
4 years ago
Other questions:
  • If you exert a force on an object in motion you will change its what?
    12·2 answers
  • WHAT ARE THE BENEFITS OF CARDIOVASCULAR ACTIVITIES?
    5·2 answers
  • Wyatt is moving a box with a mass of 37 kg a distance of 37 meters. Wyatt did 360 J of work in 2 minutes when moving the box. Wh
    8·1 answer
  • The lower atmosphere is mostly warmed by radiated heat from Earth's surface. However, water heats up and cools down more slowly
    15·2 answers
  • Andrea asked her brother to take a 4 ft floating raft out of the water near the wave-swept shore. Using this raft as a measuring
    11·1 answer
  • 1. Calculate how many electrons you need to get a charge of 1 coulomb.
    7·1 answer
  • A 49 kg person is being dragged in their sleeping bag to the lake by a 593 N
    6·1 answer
  • What are not true about pure substances?
    7·1 answer
  • PLEASE ANSWER MY QUESTION​
    15·2 answers
  • The distance between the object and its image formed by a plane mirror appears to be 24 cm. What is the distance between the mir
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!