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3 years ago

What is the frame of reference for a plane moving at 500 km/h?

Physics

2 answers:

lukranit [14]3 years ago

8 0

You can define a frame of reference depending on your point of view, but it would normally be the Earth.

so your answer is THE GROUND

RUDIKE [14]3 years ago

3 0

The frame of reference is the rotating earth underneath the flight path of the plane, the rate of rotation of the earth is 1036 miles per hour, meaning that the pilot has to compensate this fact when landing the aircraft.

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-A 1000 kg car is rolling down the street at 2.5 m/s. How fast would a 1800 kg car have to collide into it in

Readme [11.4K]

1.39m/s

Explanation:

Given parameters:

Mass of car M₁ = 1000kg

Velocity V₁ = 2.5m/s

Mass of second car M₂ = 1800kg

Unknown:

Velocity of second car V₂ = ?

Solution:

For the other body to come to rest, the momentum of the colliding cars must be equal and in the opposite direction:

Momentum of car 1 - momentum of car 2 = 0

Momentum of car 1 = Momentum of car 2

M₁V₁ = M₂V₂

The unknown is V₂

1000x2.5 = 1800V₂

V₂ = $\frac{2500}{1800}$ = 1.39m/s

Learn more:

Momentum brainly.com/question/2990238

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3 years ago

Liz has designed a sailboat. She wants to build a prototype of the boat. Liz has $12,000 to spend on the boat. $7,000 of that mo

Naddika [18.5K]

Answer:

A. Marine plywood only.

Explanation:

3 0

3 years ago

Read 2 more answers

The pressure in a section of horizontal pipe with a diameter of 2.5 cm is 139 kPa. Water ï¬ows through the pipe at 2.9 L/s. If t

My name is Ann [436]

Answer:

d = 2*0.87 = 1.75 cm

Explanation:

by using flow rate equation to determine the speed in larger pipe

$\phi =\pi r^2 v$

$v = \frac{\phi}{\pi r^2}$

$= \frac{2900 cm^3/s}{3.14(1.25cm)^2}$

= 591.10 cm/s

= 5.91 m/s

by Bernoulli's EQUATION

$p1 +\frac{1}{2} \rho v1^2 = p2 +\frac{1}{2} \rho v2^2$

$139000+ \frac{1}{2}*1000*5.91^2 = 101000 +\frac{1}{2}*1000* v2^2$

solving for v2

v2 = 10.53 m/s

diameter can be determine by using flow rate equation

$q = v \pi r^2$

$r^2 = \frac{q}{\pi v}$

$= \frac{2900}{3.14*1053}$

r = 0.87 cm

d = 2*0.87 = 1.75 cm

5 0

3 years ago

Please help...........................

Marianna [84]

Hi!

Neutrons are neutral, which means they don't exactly have an electrical charge. It's because of this neutral charge that it is represented with a '0'.

On the other hand, protons and electrons <em>do </em>have electrical charges. Electrons flow around the outside of the nucleus, with a negative charge.

Protons are stored in the nucleus with the neutrons, holding a positive charge.

Hopefully, this helps! =)

6 0

4 years ago

Read 2 more answers

Name three ways carbon and oxygen get into the environment.

Dafna1 [17]

Humans,trees,plants hope it helps

7 0

4 years ago