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Ganezh [65]
3 years ago
15

40 POINTS!

Physics
1 answer:
mestny [16]3 years ago
3 0
<h2><u>Answer</u></h2>

Both Kinetic energy and momentum of the system are conserved

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What is the approximate weight of the air inside the tire in English Engineering Units (tire outside diameter = 49", rim diamete
Mademuasel [1]

Answer:

1.265 Pounds

Explanation:

Data provided:

Tire outside diameter = 49"

Rim diameter = 22"

Tire width = 19"

Now,

1" = 0.0254 m

thus,

Tire outside radius, r₁ = 49"/2 = 24.5" = 24.5 × 0.0254 = 0.6223 m

Rim radius, r₂   = 22" / 2 = 11" = 0.2794 m

Tire width, d = 19" = 0.4826 m

Now,

Volume of the tire = π ( r₁² - r₂² ) × d

on substituting the values, we get

Volume of air in the tire = π (  0.6223² - 0.2794² ) × 0.4826 = 0.46877 m³

Also,

Density of air = 1.225 kg/m³

thus,

weight of the air in the tire = Density of air × Volume air in the tire

or

weight of the air in the tire = 1.225 × 0.46877 = 0.5742 kg

also,

1 kg = 2.204 pounds

Hence,

0.5742 kg = 0.5742 × 2.204  = 1.265 Pounds

3 0
3 years ago
Compare the momentums of a 50 kg dolphin swimming at 16.4 m/s and a 4100 kg elephant walking 0.20 m/s?
Mamont248 [21]
Their momentum is the same. 
momentum of dolphin=50kg*16.4m/s=820kg*m/s
momentum of elephant=4100kg*0.20m/s=820kg*m/s
6 0
3 years ago
Read 2 more answers
Where is the independent variable usually located in a scientific table? First column Second column Third through fifth columns
Reika [66]

Explanation:

On the horizontal side left side

4 0
3 years ago
What formula can be used to determine the velocity of an object in free fall?
PtichkaEL [24]
Assuming that you're given either an initial or final velocity, you can use the following equation and solve for the initial or final velocity. 

Vyf² = Vyi² - 2g(y - y₀)

Where, 
Vyf² = final velocity
Vyi₂² = initial velocity
g = 9.81 m/s²
(y - y₀) = the change in the distance along the y-axis.

You'll need also determine the positive and negative of your y-axis for your final solution because velocity can be positive or negative based on direction. Lastly, don't forget to square root both sides of your equation for your velocity. 

I hope this helps. 
4 0
3 years ago
If y=5sin (3x -40)<br>Calculate the frequency and period​
ioda

Answer:

0.477 Hz

2.09 s

Explanation:

y = A sin(ωx − φ)

A is the amplitude, ω is the angular frequency, and φ is the phase shift.

ω = 3 rad/s

f = ω / 2π ≈ 0.477 Hz

T = 1/f ≈ 2.09 s

8 0
3 years ago
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