Which are parts of a neuron?

Wagon wheel. While working on your latest novel about settlers crossing the Great Plains in a wagon train, you get into an argum

OverLord2011 [107]

Answer:

I = 16.7kgm²

Explanation:

Since, Torque is given by,

\tau = F*r = I*\alpha

here, I = Moment of inertia = ??

\alpha = angular acceleration of wheel = a/r

F = tangential tension acting on the wheel = T

a = acceleration of bag of sand = 2.95 m/s^2

r = radius of wheel = d/2 = 120/2 = 60 cm = 0.60 m

from force balance on sand bag,

mg - T = m*a

T = m*(g-a)

m = mass of sand bag = 20 kg

So, I = T*r/\alpha = m*(g-a)*r/(a/r)

Using known values:

I = 20*(9.81 - 2.95)*0.60/(2.95/0.60) = 16.74

I = 16.7 kgm² = Moment of inertia of wheel experimentally

also, Moment of inertia of wheel theoretically(I') = M*r²

given, M = mass of wheel = 70 kg

I' = 70*0.60²= 25.2 kgm² = Moment of inertia of wheel theoretically

7 0

2 years ago

Starting from the front door of your ranch house, you walk 50.0 m due east to your windmill, and then you turn around and slowly

Hunter-Best [27]

Answer:

Average velocity

$v=\frac{d}{t}\\ v=\frac{10m}{70s}\\v=.1428 \frac{m}{s}$

Average speed,

$S=\frac{D}{t}\\ S=\frac{90}{70}\\ S=1.29\frac{m}{s}$

Explanation:

(a)Average velocity

We have to find the average velocity. We know that velocity is defined as the rate of change of displacement with respect to time.

To find the average velocity we have to find the total displacement.

since displacement along east direction is 50m

and displacement along west=40m

so total displacement,

$d=50m-40m\\d=10m$

total time,

$t=28 s+42 s\\t=70 s$

therefore, average velocity

$v=\frac{d}{t}\\ v=\frac{10m}{70s}\\v=.1428 \frac{m}{s}$

(b)Average Speed:

Average speed is defined as the ratio of total distance to the total time

it means

Average speed= total distance/total time

here total distance,

$D= 50m+40m\\D=90m$

and total time,

$t= 28s+40s\\t=70s$

therefore,

Average speed,

$S=\frac{D}{t}\\ S=\frac{90}{70}\\ S=1.29\frac{m}{s}$

8 0

2 years ago

Briana pushed a 5 kg box of dance flyers with a force of 10 N. What is the acceleration of the box?

maks197457 [2]

Answer:

Explanation:

From force =ma

a=f/m

a=10/5

a=2m/s2

8 0

2 years ago

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What does it mean when we say that Simple Harmonic Motion is "periodic"? *

juin [17]

Answer; the free encyclopedia. In mechanics and physics, simple harmonic motion is a special type of periodic motion or oscillation where the restoring force is directly proportional to the displacement and acts in the direction opposite to that of displacement.

Explanation:

8 0

3 years ago

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Why is it dangerous to be exposed to X-rays but not (or at least much less) dangerous to be exposed to radio waves?

love history [14]

Answer:

Short wavelength, higher energy and greater penetrating nature of x rays makes them more dangerous compared to the radio waves that have longest wavelength range and lesser penetrating power.

Explanation:

Both radio waves and x rays belong to the electromagnetic spectrum. These two types of radiation travel at the speed of light. But the frequency of the X rays is much higher compared to the radio waves. Due to this , the x rays can penetrate deeper into the skin than the radio waves.

When the wave length is smaller, they rays carry more energy, like the X rays. This makes them interact with matter more prominently. Since radio waves have longer wavelength, they carry comparatively lesser energy, making their interaction with matter lesser.

So getting exposed to x rays is more dangerous than to radio waves.

7 0

2 years ago