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
sergiy2304 [10]
4 years ago
9

Calculate the broadcast wavelength of the radio station 99.90 fm. seconds

Physics
1 answer:
taurus [48]4 years ago
8 0

The radio waves are electromagnetic wave, so it travels with velocity of light i.e 3\times 10^{8} \ m/s.

We can use the relation between frequency, wavelength and speed as

\lambda =\frac{c}{f}

Here c is speed of light, \lambda is wavelength and f is frequency and its value is given 99.90 FM, it is actually in megahertz  (i.e 99.90 MHz).

Therefore,

\lambda =\frac{3 \times 10^{8}\ m/s }{99.90 \times 10^{6} \ Hz} = 3.003 \ m.

Thus, the broadcast wavelength of the given radio station is 3.003 m.

You might be interested in
I will make you as brainiest ​
Amiraneli [1.4K]

Answer:

the heat of the water will cause the empty bottle to expand so as the air of the bottle gets bigger the balloon will get bigger

3 0
2 years ago
two vehicles have a head on collision. one vehicle has a mass of 3000 kg and moves at 25 m/s while the second vehicle has a mass
emmasim [6.3K]

Answer:

The speed of the combined vehicles is 6.82m/s

Explanation:

Using the law of conservation of momentum which stayed that the sum of momentum of bodies before collision is equal to their sum of momentum after collision. After collision, both object moves with the same velocity.

Momentum = mass×velocity

Before collision:

Momentum of vehicle or mass 3000kg moving with velocity 25m/s

= 3000×25

= 75000kgm/s

Pa = 75000kgm/s

Momentum of vehicle with mass 2500kg moving with velocity of -15m/s

= 2500×-15

= -37500kgm/s

After collision:

Momentum = (3000+2500)V

Where v is their common velocity

Momentum after collision = 5500V

Based on the law:

75000+(-37500) = 5500V

75000-37500 = 5500V

37500 = 5500V

V = 37500/5500

V = 6.82m/s

7 0
3 years ago
A stone is thrown vertically upward with a speed of 12m/s from the edge of a cliff 70 m high (a) How much later it reaches the b
jonny [76]

Answer

given,

vertical speed of stone,v = 12 m/s

height of the cliff = 70 m

a) time taken by the stone to reach at the bottom of the cliff

We know that,

S = u t + 1/2 a t²

- 70 = 12 t - 0.5 x 9.8 t²

4.9 t² - 12 t - 70 = 0  

solving the equation

t = 5.2 s (neglecting the negative value)

b) again using equation of motion

   v = u + a t

   v = 12 - 9.8 x 5.2

  v = -38.96 m/s

ignoring the negative sign

magnitude of velocity is equal to 38.96 m/s

c) total distance travel by the stone

  vertical distance covered by the stone

 v² = u² + 2 g h

 0 = 12² - 2 x 9.8 x h

 h = 7.34 m

to reach the stone to the same level distance travel be doubled.

Total distance travel by the stone

H = h + h + 70

H = 7.34 x 2 + 70

H = 84.7 m.

8 0
3 years ago
Where is the light energy converted into an electron flow.
schepotkina [342]

During photosynthesis, light energy is converted into an electron flow in the reaction center chlorophyll.

<h3>What is photosynthesis?</h3>

Photosynthesis can be defined as a biological and chemical process through which green plants (autotrophs) convert light energy (sunlight) into chemical energy.

<h3>The chemical reaction for photosynthesis.</h3>

In Science, photosynthesis is represented by the following chemical reaction:

Carbon \;dioxide + water + light energy \rightarrow sugar + oxygen

In conclusion, the electrons found within the pigment molecules are excited by visible light, which is then converted into an electron flow in the reaction center chlorophyll.

Read more on photosynthesis here: brainly.com/question/3529377

8 0
2 years ago
A child cart is given an initial velocity of 8 m/s and undergoes a constant acceleration of 4 m/s2. Calculate the distance moved
Nesterboy [21]

Answer: This is Yazan From 10-C

Explanation

5 0
3 years ago
Other questions:
  • Atoms with a low electronegativity, like lithium, have a weak attractive force
    14·2 answers
  • Plz! How to solve this question? The answer is B.
    14·1 answer
  • An object whose mass is 100 lb falls freely under the influence of gravity from an initial elevation of 600 ft above the surface
    13·1 answer
  • An _______ is a device used to heat air by conduction
    12·2 answers
  • Find the magnetic field strength at 1.50 m from the center of the circular region (e.g., outside the electric-field region).
    9·1 answer
  • Complete the following statement: today, the standard unit of time is defined in terms of
    11·1 answer
  • Earth's orbit around the sun is not perfectly circular. The nearest point of its orbit is 1.471E8 kilometers. The mass of the su
    10·1 answer
  • . With the use of the Hubble Space Telescope, scientists recently discovered a giant runaway star. It is 90 times larger than th
    7·1 answer
  • Different between si unit and derived unit​
    15·1 answer
  • Friction helps your vehicle stop quickly.<br> A. TRUE<br> B. FALSE
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!