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grandymaker [24]
3 years ago
12

A plane flies 1,995 miles in a southwesterly direction from Baltimore to Phoenix in 5.00 hours . What is the velocity of the pla

ne ?
Physics
1 answer:
disa [49]3 years ago
4 0

displacement of the plane is given as

d = 1995 miles

time taken by the plane

t = 5.00 hours

now the velocity is given as

v = \frac{displacement}{time}

v = \frac{1995}{5}

v = 399 mi/h

so the velocity of airplane is 399 mi/h towards South West

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Lady bird [3.3K]
The Atwood's machine is in motion starting from rest, then Vf = Vo + a(t). 
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<span>The Atwood's Machine also has the formula d= distance = 1/2a(t²) </span>
<span>distance given is 6.365 m , then 6.365 = 1/2 a (1.9)², </span>
<span>a = 3.526 m/s² the same acceleration. </span>
<span>a= g(m1-m2) / m1+m2) </span>
<span>m1a + m2a = m1g - m2g </span>
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<span>3.526 m1 - 9.81 m1 = -9.81m2 - 3.526 m2 </span>
<span>-6.28 m1 = -13.34 m2 </span>
<span>0.47 m1= m2 </span>
<span>if 24J = 1/2mv² </span>
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<span>48/ 44.89 = m1 </span>
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6 0
4 years ago
The majority of sediments in the ocean are found...
makkiz [27]
I'm in middle school, but I think I know the answer, I am sorry if I am wrong.

It's D
6 0
4 years ago
Technician A says that gears may be used to apply torque to other rotating parts. Technician B says that gears may be used to mu
Goryan [66]

Answer:

Both technicians are right.

Explanation:

Torque is defined as a rotational force that can be calculated by the formula T= F.d. Being F the force applied to a body to make it rotate and d the distance since the force is applied.  

T= F . d

So technician A is saying that gear can apply a torque to another gear, and that is true because it’s applying a rotational force to the gear next to it, in simple terms  -anytime I make something rotate, I'm generating a torque-. And for technician B, the torque also can vary as a function of the distance of the force applied (size of the gear), so, it can multiply the torque and change the rotation speed.

5 0
4 years ago
n noisy factory environments, it's possible to use a loudspeaker to cancel persistent low-frequency machine noise at the positio
lys-0071 [83]

Answer:

7.888m

Explanation:

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velocity of the sound 'v' = 340 m /sec

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λ= v/f => 340/90

λ= 3.777m

The destructive interference condition is givn by

Δd= (m+\frac{1}{2}  ) λ

where, m=0,1,2,3,..

m=0, for minimum destructive interference

Δd= (0+\frac{1}{2}  ) x 3.777

Δd=1.888

Therefore, the required distance is

d_f=d_i + Δd => 6 + 1.888

d_f= 7.888m

Thus, So the speaker should be placed at  7.888 m

4 0
3 years ago
If 63 joules of work were necessary to move a 3.50 newton crate, how far was the crate moved?
katovenus [111]
Divide them by 53 and 3.50
5 0
3 years ago
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