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S_A_V [24]
4 years ago
8

A 75 kg pilot flies a plane in a loop. At the top of the loop, where the plane is completely

Physics
1 answer:
erica [24]4 years ago
6 0

Answer:

1.47 km

Explanation:

When the pilot hangs freely in the seat and does not push against the  seat belt, his centripetal acceleration would counter balance gravitational acceleration g = 9.81m/s2 = a

We can calculate the radius of the loop using velocity v = 120m/s and a

a = \frac{v^2}{r}

r = \frac{v^2}{a} = \frac{120^2}{9.81} = 1467.89 m or 1.46 km

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(b) Released from rest at the same height, a can of frozen juice rolls to the bottom of the same hill. What is the translational
Oksanka [162]

Answer:

Explanation:

a) using the energy conservation  equation

mgh = 0.5mv^2 + 0.5Iω^2

I(moment of inertia) (basket ball) = (2/3)mr^2

mgh = 0.5mv^2 + 0.5( 2/3mr^2) ( v^2/r^2)

gh = 1/2v^2 + 1/3v^2

gh = v^2( 5/6)

v =  \sqrt{\frac{6gh}{5} }

putting the values we get

6.6 ^{2} = \frac{6\times9.8h}{5}

solving for h( height)

h = 3.704 m apprx

b) velocity of solid cylinder

mgh = 0.5mv^2 + 0.5( mr^2/2)( v^2/r^2) where ( I ofcylinder = mr^2/2)

g*h = 1/2v^2 + 1/4v^2

g*h = 3/4v^2

putting the value of h and g we get

v= = 6.957 m/s apprx

5 0
4 years ago
ppose that you hold a vibrating 340 Hz tuning fork near a guitar string that is vibrating at 350 Hz. What you hear is?
galben [10]

Answer:

A beat with the frequency of 10Hz.

Explanation:

The frequencies from the tuning fork and guitar will cancel each other.

The frequency of tuning fork = 340Hz

The frequency of guitar string= 350Hz

The offset = 350Hz - 340Hz = 10Hz

A 10Hz frequency sound is still heard.

3 0
3 years ago
A student wrote the following statements about ocean waves. Statement 1: They have long wavelength. Statement 2: They are driven
Sergio039 [100]
The statements which best describe the properties of tsunami waves are these: 1. THEY HAVE LONG WAVELENGTH.
2. THEY TRAVEL AT VERY HIGH SPEED.
Tsunami typically occur as a result of sudden displacement of gigantic water masses which erupted due to earthquake that occur on the sea bed. One peculiar characteristic of tsunami is the very wide distances between its wavelengths. A tsunami is a very long wavelength waves of water, its wavelength is much more greater than that of ordinary wave and can be as much as 300 kilometer. 
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Tsunami also travels at very high speed; it can travel for a long period of time at high speed without losing much energy.
8 0
3 years ago
Find τf, the torque about point p due to the force applied by the achilles' tendon.
Luba_88 [7]
The formula for the torque is
<span>τf = p F
where
</span><span>τf is the torque
p is the distance where the force is applied by the tendon
F is force applied by the tendon

If there are given values, substitute in the equation and solve for the torque.</span>
3 0
4 years ago
A current of 3A passes through a 2.05cm diameter copper wire. if the wire has 8.5x1028 free electrons per cubic meter. How many
liberstina [14]

Answer:

For copper, ρ = 8.93 g/cm3 and M = 63.5 g/mol. Assuming one free electron per copper atom, what is the drift velocity of electrons in a copper wire of ...

24 pages

Explanation:

3 0
2 years ago
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