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
Sergio039 [100]
3 years ago
11

A merry-go-round accelerates from rest to 0.75 rad/s in 33 s.

Physics
1 answer:
Aleks04 [339]3 years ago
6 0

Answer:

1309.1 Nm

Explanation:

Torque is given as a product of Moment of innertia and acceleration hence

T=Ia where T is torque and a is acceleration

To get acceleration, it is rate of change of speed per unit time hence a=\frac {v_f-v_i}{t} where v and t represent velocity and time respectively while subscripts f and i represent final and initial respectively. Also, I is given by 0.5mr^{2} where m js mass and r is radius hence the net torque can now be written as

T=0.5mr^{2}\times \frac {v_f-v_i}{t}

By substituting the given figures then

T=0.5\times 3.2\times 10^{4}\times 6^{2}\times \frac {0.75-0}{33}=1309.0909090867 Nm\approx 1309.1 Nm

You might be interested in
What is the largest four subsystems?​
AnnZ [28]

Explanation:

Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).

5 0
3 years ago
True or false. electrons move in orbits in the same way plants orbit the sun
zalisa [80]
One plants don't orbit the sun, the earth does.
two true if its saying plants orbit the sun
7 0
4 years ago
Read 2 more answers
A friend tosses a baseball out of his second floor window with initial velocity of 4.3m/s(42degrees below the horizontal). The b
schepotkina [342]
<span>b)Determine your horisontal distance from window (ans. 1.5 m)
c)Calc the speed of ball as you catch it (ans: 8.2m/s)

I dont get what 42 m below the horizontal is, can someone give me direction on how to do this? </span>
7 0
3 years ago
Read 2 more answers
A thick steel sheet of area 100 in.2 is exposed to air near the ocean. After a one-year period it was found to experience a weig
vladimir1956 [14]

Answer:

Therefore the rate of corrosion 37.4 mpy and 0.952 mm/yr.

Explanation:

The corrosion rate is the rate of material remove.The formula for calculating CPR or corrosion penetration rate is

CPR=\frac{KW}{DAT}

K= constant depends on the system of units used.

W= weight =485 g

D= density =7.9 g/cm³

A = exposed specimen area =100 in² =6.452 cm²

K=534 to give CPR in mpy

K=87.6  to give CPR in mm/yr

mpy

CPR=\frac{KW}{DAT}

        =\frac{534\times( 485g)\times( 10^3mg/g)}{(7.9g/cm^3) \times (100in^2)\times (24h/day)\times (365day/yr)\times 1yr}

        =37.4mpy

mm/yr

CPR=\frac{KW}{DAT}

        =\frac{87.6\times (485g)\times (10^3 mg/g)}{(7.9g/cm^3)\times (100in^2)\times(2.54cm/in)^2\times (24h/day)\times (365day/yr)\times 1yr}

       =0.952 mm/yr

Therefore the rate of corrosion 37.4 mpy and 0.952 mm/yr.

3 0
3 years ago
I need help if someone has coursehero plss some me the answer and I will give you brainliest plssss
Vinil7 [7]

Answer:

5. All of the answers are yes.

Explanation:

<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>
7 0
2 years ago
Other questions:
  • If an object is thrown upward at 128 feet per second from a height of 76 feet, its height S after t seconds is given by the foll
    10·1 answer
  • A coach wants her team to have fun, win some games, and be a productive unit. What is the most important personality trait the c
    8·2 answers
  • Which sentence features a shift in tense?
    13·2 answers
  • What would happen when two or more capacitors are connected in series across a potential difference, then
    11·2 answers
  • Why people bleed from nose while climbing uphill rapidly​
    14·1 answer
  • 1 Write 7 next to the statements that are true.
    5·1 answer
  • How much heat is required to evaporate 0.15 kg of lead at 1750°C, the boiling point for lead? The heat of vaporization for lead
    11·1 answer
  • 1.An elevator is ascending with constant speed of 10 m/s. A boy in the elevator throws a ball upward at 20 m/ a from a height of
    9·1 answer
  • Question 3
    12·1 answer
  • 3 A rocket of mass 1200 kg is travelling at 2000 m/s. It fires its engine for 1 minute. The forward thrust provided by the rocke
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!