1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gnesinka [82]
3 years ago
13

Flying against the wind, an airplane travels 2670 km in 3 hours. Flying with the wind, the same plane travels 11,070 km in 9 hou

rs. What is the rate of the plane in still air and what is the rate of the wind?
Physics
1 answer:
xxMikexx [17]3 years ago
5 0

Answer:

speed of plane in still air = 1060 km/h

speed of wind = 170 km/h

Explanation:

Let teh speed of plane in still air is vp and the speed of air is va.

Irt travels 2670 km in 3 hours against the wind

So,

vp - va = 2670 / 3 = 890 km/h ..... (1)

It travels 11070 km in 9 hours along the wind.

vp + va = 11070 / 9 = 1230 km/h .... (2)

Adding both the equations

2 vp = 2120

vp = 1060 km/h

and va = 1230 - vp = 1230 - 1060 = 170 km/h

You might be interested in
Why did earth most likely form into distinct, separate layers? (HELP ASAP PLZ)
g100num [7]

Answer:

C

Explanation:

Rocks with hotter temperatures sank to the bottom of the Earth. The rocks with the hottest temperature became the core and the rocks with the least amount of heat became the crust.

Hope this helps!

8 0
3 years ago
Read 2 more answers
What is the current of the ammeter?
DaniilM [7]

Answer:

.6 A

Explanation:

V = IR

V/R = I

12/20 = I = .6 A

3 0
2 years ago
Read 2 more answers
A crane lifts a 400 N crate full of baked beans 15 m. How much work was done by the crane?
damaskus [11]

Answer:

6000 J

Explanation:

work = F x S

work = 400 x 15

work = 6000 J

3 0
3 years ago
You are designing a flywheel. It is to start from rest and then rotate with a constant angular acceleration of 0.200 rev/s^2. Th
Rama09 [41]

Answer:

 I = 8.75 kg m

Explanation:

This is a rotational movement exercise, let's start with kinetic energy

        K = ½ I w²

They tell us that K = 330 J, let's find the angular velocity with kinematics

      w² = w₀² + 2 α θ

as part of rest w₀ = 0

      w = √ 2α θ

let's reduce the revolutions to the SI system

      θ = 30.0 rev (2π rad / 1 rev) = 60π rad

let's calculate the angular velocity

      w = √(2  0.200  60π)

      w = 8.683 rad / s

we clear from the first equation

        I = 2K / w²

let's calculate

        I = 2 330 / 8,683²

        I = 8.75 kg m

4 0
3 years ago
It takes 6400 years for one gram of radium to decay away to only 1/16 (one-sixteenth) of a gram. The half-life of radium is
Vsevolod [243]
1/16........................................
4 0
3 years ago
Other questions:
  • When light (or another wave) bounces back from a surface ?
    6·1 answer
  • A frisbee is flying through the air. Which forces are acting on it (choose 3)​
    15·1 answer
  • An emu moving with constant acceleration covers the distance between two points that are 92 m
    9·1 answer
  • A student is given an assignment to demonstrate diffraction. He takes a photograph of a straw in a glass of water. The straw app
    15·2 answers
  • How must a force be applied to cause resonance?
    7·1 answer
  • Find the density, in g/cm3, of a metal cube with a mass of 50.3 g and an edge length (l) of 2.65 cm. the volume (v) of a cube is
    14·1 answer
  • 1. Ja pendulum has a length of 0,500 m.What is the period of the pendulum? Use
    5·1 answer
  • A tuning fork vibrating in water with a frequency of 840 Hz produces waves that are 2.5 m long. If a tuning fork vibrating at 50
    15·1 answer
  • 10. On Christmas Eve night when all the Who's are sleeping, are they still using energy? Explain this by using
    5·1 answer
  • HELP ME PLSS!! Will mark brainiest
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!