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
liraira [26]
2 years ago
11

An airplane is heading due south at a speed of 560 km/h . If a wind begins blowing from the southwest at a speed of 80.0 km/h (a

verage). Calculate magnitude of the plane's velocity, relative to the ground.
Physics
1 answer:
polet [3.4K]2 years ago
5 0

Answer:

the magnitude of Vpg = 493.711 km/h

Explanation:

given data

speed Vpg = 560 km/h

speed Vwg = 80 km/h

solution

we get here magnitude of the plane velocity w.r.t. ground is

we know that the Vpg = Vpw + Vwg       .....................1

writing the component of the velocity that is

Vpw = (0 km/h î - 560 km/h j )

Vwg = (80 cos 45 km/h î + 80 sin 45 km/h j)

adding these

Vpg = (0+80 cos 45 km/h ) î  + ( -560 + 80 sin 45 km/h j)i

Vpg = (42.025 )  î  (-491.92 km/h)j

now we take magnitude

the magnitude of Vpg = \sqrt{(42.025^2+(-491.92)^2)} km/h

the magnitude of Vpg = 493.711 km/h

You might be interested in
According to the kinetic theory, collisions between molecules in a gas _____.a.are inelasticb.never occurc. cause a loss of tota
KonstantinChe [14]

Answer:

d. perfectly elastic

Explanation:

According to the kinetic theory for collisions of gas molecules:

1.The loss of energy is negligible or we can say that it is zero.

2.Molecules of the gas move in a random manner.

3.The collision between molecules and with the wall of the container is perfectly elastic.That is why loss in the energy is zero.

Therefore the correct answer will be d.

d. perfectly elastic

3 0
3 years ago
Calculate the de Broglie wavelength of an electron accelerated from rest through a potential difference of (a) 100 V, (b) 1.0 kV
forsale [732]

Answer:

(a) \lambda=1.227\ A

(b) \lambda=0.388\ A

(c) \lambda=0.038\ A

Explanation:

Given that,

(a) An electron accelerated from rest through a potential difference of 100 V. The De Broglie wavelength in terms of potential difference is given by :

\lambda=\dfrac{h}{\sqrt{2meV} }

Where

m and e are the mass of and charge on an electron

On solving,

\lambda=\dfrac{12.27}{\sqrt{V} }\ A

V = 100 V

\lambda=\dfrac{12.27}{\sqrt{100} }\ A

\lambda=1.227\ A

(b) V = 1 kV = 1000 V

\lambda=\dfrac{12.27}{\sqrt{V} }\ A

\lambda=\dfrac{12.27}{\sqrt{1000} }\ A

\lambda=0.388\ A

(c) If V=100\ kV=10^5\ V

\lambda=\dfrac{12.27}{\sqrt{10^5} }\ A

\lambda=0.038\ A

Hence, this is the required solution.

7 0
3 years ago
A bicyclist steadily speeds up from rest to 11.0m/s during a 5.50s time interval. Determine all unknowns and answer the followin
Marina86 [1]

Explanation:

acceleration is 2 m/s^2

v-u/t

distance travelled is 30.25 meter

(v^2-u^2)/2a

11*11/2*2

121/4

30.25 m

5 0
3 years ago
17. What is the speed of a race horse that runs<br> 1500 m in 125 s?
Hoochie [10]

Answer:

12 miles per second

Explanation:

6 0
3 years ago
Read 2 more answers
A piece of amber is charged by rubbing with a piece of fur. If the net excess charge on the fur is 8.9 nC ( 8.9 10-9 C), how man
Alika [10]

Answer:

Number of electrons, n=5.56\times 10^{10}

Explanation:

Given that,

Charge on the fur, q=8.9\ nC=8.9\times 10^{-9}\ C

A piece of amber is charged by rubbing with a piece of fur. We need to find the electrons were added to the amber. It can be calculated using the quantization of charge as

q = n × e

Where

n is the number of electrons

e is the charge on electron

n=\dfrac{q}{e}

n=\dfrac{8.9\times 10^{-9}}{1.6\times 10^{-19}}

n=5.56\times 10^{10}\ electrons

So, n=5.56\times 10^{10}\ electrons number of electrons are added to the amber. Therefore, this is the required solution.

7 0
3 years ago
Other questions:
  • 1. In a(n) ______________________ circuit, all parts are connected one after another along one path.
    5·2 answers
  • When two objects of different masses, different temperatures, and different sizes are placed in thermal contact, energy will alw
    7·1 answer
  • Read the passage.
    13·1 answer
  • When the voltage across a steady resistance is doubled, the current?
    6·1 answer
  • For the graph above, what is the independent variable? What is the dependant variable?
    10·1 answer
  • The energy band gap of GaAs is 1.4eV. calculate the optimum wavelength of light for photovoltaic generation in a GaAs solar cell
    7·1 answer
  • The earth exerts a force of 1900 N on an or-
    6·1 answer
  • What do you call a molecule composed of two atoms of the same element?
    9·1 answer
  • List out any 4 objectives of education​
    5·1 answer
  • Alchemists searched for ways to change lead into gold. Which type of change
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!