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Agata [3.3K]
3 years ago
11

2. The driven gears have 45 teeth and 40 teeth respectively, and the driving gears have 25 and 30 teeth respectiv

Physics
1 answer:
Natalka [10]3 years ago
6 0

Answer:

17/11

Explanation:

hope it helps if not, sorry!

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By what length will a slab of concrete that is originally 18 m long contract when the temperature drops from 24°C to -16°C? The
RUDIKE [14]

Explanation:

According to Thermal Expansion of solids:

dl =  \alpha \times  l \times dt

dl =  {10}^{ - 5}  \times 18 \times 40

dl = 7.2 \times  {10}^{ - 3}

4 0
3 years ago
A car traveling at 27.4 m/s hits a bridge abutment. A passenger in the car, who has a mass of 65.0 kg, moves forward a distance
Minchanka [31]

Answer:

F=43570.9N

Explanation:

We can calculate the acceleration experimented by the passenger using the formula v_f^2=v_i^2+2ad, taking the initial direction of movement as the positive direction and considering it comes to a rest:

a=\frac{v_f^2-v_i^2}{2d}=\frac{-v_i^2}{2d}

Then we use Newton's 2nd Law to calculate the force the passenger of mass m experimented to have this acceleration:

F=ma=\frac{-mv_i^2}{2d}

Which for our values is:

F=\frac{-(65kg)(27.4m/s)^2}{2(0.56m)}=43570.9N

6 0
4 years ago
What is a wave called that moves up and down
charle [14.2K]
Transverse waves is what its called
7 0
4 years ago
Read 2 more answers
What is the 4th dimension? I have heard that it's time, it's a from of saying characteristic. I don't know I need help on this,
sashaice [31]

If you want to tell a friend about a fish you caught or a tree you cut down,
you're going to tell him WHERE you were ... its position in space, 3 numbers,
'x', 'y', and 'z' ... and also WHEN you were ... its position in time, one more
number. 

Dimensions are numbers used to describe the location of a point, and the
difference in location between two points.  With four numbers, you can exactly
describe the location of anything, and its distance from any other thing, in
space and time.


3 0
3 years ago
While traveling along a highway a driver slows from 32 m/s and comes to a stop with an acceleration of -6 m/s2. How long did it
diamong [38]

Answer: 6s

Explanation:

Vs=32m/s  speed at beginning of slowing down

Vf=0m/s     stop speed

a= -6 m/s²  acceleration

----------------

Use equation for acceleration :

a=(Vf-Vs)/t

a*t=Vf-Vs

t=(Vf-Vs)/a

t=(0-36)/-6

t=-36/-6

t=6 s

7 0
3 years ago
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