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
densk [106]
3 years ago
7

PHYSICS QUESTION - CAN ANYONE HELP NOW?

Physics
2 answers:
Brums [2.3K]3 years ago
6 0

Givens: m=20kg r=2.0m L=360 kg m^2/s

Unknown: Speed . (But there are two "types of speed" which are angular speed and linear speed and ARE DIFFERENT)

Formulas: L=Iω  Angular momentum = inertia x angular velocity (L=Iω)

I=mr^2; ω=v/r  

Therefore, L=r^2m * v/r = rmv


L=rmv

360=20*2*v

360/(20*2) =v

360/40= v

v=9m/s (linear tangent speed)  

Angular velocity ω= v/r  

ω= 9/2

ω= 4.5rads/s (angular speed)


In other words, both 9 and 4.5 should be right if explained correctly.

GrogVix [38]3 years ago
3 0
It's velocity when it strikes the ground is. D. 232.9 kg.m/s<span>.
</span>
I hope this helps!!!







You might be interested in
Question 1
valentina_108 [34]

The distance covered is simply the length of the entire trip, which is 12m + 16m, or 28m.

The displacement is the distance from the starting point to the ending point along with the direction of the net motion. The dog walks 12m east then 16m west, so its resultant displacement is 4m west.

6 0
3 years ago
You want to determine whether the mass of an object attached to a parachute affects the time it takes to fall to the ground. In
hammer [34]

Answer:

The Answer is below!!

Explanation:

The larger the area of the parachute, the more air needs to be pushed out of the way, and so the slower it descends. the independent variable is the shape of the parachutes' canopies. The dependent variable is the drop speeds of the parachutes. How long does it take for the parachutes to reach the ground? Measure this using a stopwatch.

Hope I Helped!!

:)

5 0
2 years ago
Friction occurs when microscopic hills and valleys stick together<br><br> true or false
Reika [66]

Answer:

true

Explanation:

Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. Heavier objects also have more friction because they press together with greater force. Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy.

4 0
3 years ago
Read 2 more answers
The graph shows two runners participating in a race.
Olin [163]

Answer:

'Daniela had a 5-meter head start, and Leonard caught up to her at 25 meters.'

Explanation:

hope that helps :)

6 0
3 years ago
Read 2 more answers
A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0 m s–2 for 8.0 s. How far does
ankoles [38]

Answer:

96m

Explanation:

Using SUVAT:

s=? u=0 a=3 t=8

s=ut+0.5*at^2

s=0.5*3*8^2

s=96m

4 0
3 years ago
Other questions:
  • A horizontal circular turntable rotates about its center at the uniform rate of 10.9 revolutions per minutes. Find the greatest
    6·1 answer
  • PLEASE HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·2 answers
  • Please help with this question
    9·1 answer
  • How does the second law of thermodynamics relate to the direction of heat flow?
    10·2 answers
  • There are many risks associated with nuclear power. Which is NOT a risk associated with nuclear power?
    12·2 answers
  • Составь словарный диктант из глаголов неопределённой формы которые есть в орфографическом словаре учебника рядом Перепишите слов
    6·1 answer
  • Select the correct answer.
    7·2 answers
  • On my bike, I was able to travel 40 miles in one hour. From this information, we can determine the bike's
    6·2 answers
  • Does sound travel faster through stiffer objects yes or no and explain why?
    9·2 answers
  • The postal service had a special deal. You could ship up to 2 kg for five dollars for a
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!