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
PilotLPTM [1.2K]
4 years ago
14

A cat that is held upside down and dropped with no initial angular momentum manages to land on its feet. Does the cat need to ac

quire any angular momentum to do this? Explain your reasoning.
Physics
1 answer:
melamori03 [73]4 years ago
7 0

Answer:

If initially the moment is zero, the final angular momentum must be different from zero in short, some momentum must be acquired during the fall

Explanation:

The cat that falls under the action of gravity is subjected to a torque given by

           τ = F r = d L / dt

Where the force is the force of gravity, r is the distance of this force to the center of mass of the cat that is slightly changed with the movement, whereby the variation of the angular momentum is different from zero.

If initially the moment is zero, the final angular momentum must be different from zero in short, some momentum must be acquired during the fall

You might be interested in
1. A record with a radius of 0.3m spins in a clockwise circle with a centripetal
Hitman42 [59]

Solve for the linear/tangential speed:

<em>a</em> = <em>v</em>²/<em>r</em>

where <em>a</em> = centripetal acceleration, <em>v</em> = speed, and <em>r</em> = radius.

4.7 m/s² = <em>v</em>²/(0.3 m)

<em>v</em>² = (0.3 m) (4.7 m/s²)

<em>v</em> ≈ 3.96 m/s

For every time the record completes one revolution, a fixed point on the edge of the record travels a distance equal to its circumference, which is 2<em>π</em> (0.3 m) ≈ 1.88 m. So if 1 rev ≈ 1.88 m, then the angular speed of the record is

(3.96 m/s) (1/1.88 rev/m) ≈ 7.46 rev/s

Take the reciprocal of this to get the period:

1 / (7.46 rev/s) ≈ 0.134 s/rev

So it takes the record about 0.134 seconds to complete one revolution.

6 0
3 years ago
Amanda goes shopping for light bulbs. In the light bulb aisle, she finds the following incandescent light bulbs. Can you help he
Luden [163]

Answer:

The least efficient light bulb is the first one (25 W - 210 Lumen)

Explanation:

Efficiency can be defined as what you want to obtain over what you need to produce it. In this case Eff= Wattage / Lumen. For each light bulb, their efficiency is: 8.4 / 11.12 / 15.7 Lum/W

4 0
3 years ago
The Milky Way galaxy (pictured above) is an example of a(n) __________________ galaxy. At the center of the galaxy is a galactic
OlgaM077 [116]
I think the answer is A.
8 0
3 years ago
Read 2 more answers
Does anyone know what the answers are?
baherus [9]

Answer:

Option (C) is the answer

Explanation:

may be it is possible if that we stand so far

4 0
3 years ago
An elevated water tank holds 1 million gallons of water. Determine the force (in lbf) that the tower structure must be able to w
bixtya [17]

Answer:

8,345,925 lb-f

Explanation:

We know pressure P = F/A = ρgh ⇒ F = ρghA = ρgV

F = ρgV where F = force, ρ = density of water = 1000 kg/m³ , g = acceleration due to gravity = 9.8 m/s² and V = 1 × 10⁶ gallons = 1 × 10⁶ gallons × 1m³/264.2 gallons = 3785 m³

So, F = ρgV = 1000 kg/m³ × 9.8 m/s² × 3785 m³ = 37,093,000 N

We now convert Newtons to pound-force.

1 N = 0.225 lb-f

So, F = 37,093,000 N = 37,093,000 N × 0.225 lb-f/1 N = 8,345,925 lb-f

So, the tower must be able to withstand 8,345,925 lb-f

5 0
3 years ago
Other questions:
  • A stone is placed in a graduated cylinder to determine its volume
    9·1 answer
  • The range of the tides is affected by the relative positions of the sun and the moon. During the new moon and full moon, the hig
    6·1 answer
  • A small metal bar, whose initial temperature was 30° C, is dropped into a large container of boiling water. How long will it tak
    5·2 answers
  • Coil of wire is connected to a power supply, and a current runs in the coil. A single loop of wire is located near the coil, wit
    5·1 answer
  • Es muy urgente porfavor! ( solo me teneis que ayudar a sacar el apartado d,e y f porfavor!
    12·1 answer
  • What is the turning effect of a force?
    5·2 answers
  • What is an earthquake<br>please help ​
    9·2 answers
  • Is it resistant to mud fire ​
    15·2 answers
  • Alpha and beta rays origin is same
    12·1 answer
  • So that your grandmother can listen to A Prairie Home Companion, you take her bedside radio to the hospital where she is staying
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!