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
s344n2d4d5 [400]
3 years ago
13

A radar astronomer who is new at the job claims she beamed radio waves to Jupiter and received an echo exactly 48 min later. Sho

uld you believe her? Why or why not?
Physics
1 answer:
BigorU [14]3 years ago
6 0

Answer:

Should not believe her because the time taken is too short.

Explanation:

Time taken for echo to reach Earth = 48 min

Time taken by radio wave to reach Jupiter = 24 min

Distance between Earth and Jupiter when closest = 588 million kilometers = 588×10⁹ m

Distance between Earth and Jupiter when farthest = 968 million kilometers = 968×10⁹ m

Speed of radio wave = Speed of light = 3×10⁸ m/s

Distance = Velocity × Time

⇒Distance = 3×10⁸×24×60

⇒Distance = 432×10⁹ m

Which does not fall under the range of distance of Jupiter. So, I should not believe her.

You might be interested in
6. An article, which costs Rs. 850 is sold at a profit of 6%.
geniusboy [140]

Answer:

b) Rs.901  is the selling price

Explanation:

selling price = cost price+profit percentage/100 x cost price

cost price = 850

profit percentage = 6%

selling price = 850+6/100 x 850 = 901

soln 2

                              if 100 % = 850

therefore what about 106% = ?

106 x 805/100 = 901

ans = 901

if you need any clarification or more explanation pls do mention on the comment section.i would like to help more

Hope this helps and if it does mark as branliest answer thx

5 0
3 years ago
Coherent light of wavelength 540 nm passes through a pair of thin slits that are 3.4 × 10-5 m apart. At what angle away from the
Scrat [10]

Answer: 1.8\°

Explanation:

The diffraction angles \theta_{n} when we have a slit divided into n parts are obtained by the following equation:

dsin\theta_{n}=n\lambda (1)

Where:

d=3.4(10)^{-5}m is the width of the slit

\lambda=540 nm=540(10)^{-9}m is the wavelength of the light  

n is an integer different from zero.

Now, the second-order diffraction angle is given when n=2, hence equation (1) becomes:

dsin\theta_{2}=2\lambda (2)

Now we have to find the value of \theta_{2}:

sin\theta_{2}=\frac{2\lambda}{d} (3)

Then:

\theta_{2}=arcsin(\frac{2\lambda}{d})   (4)

\theta_{2}=arcsin(\frac{2(540(10)^{-9}m)}{3.4(10)^{-5}m})   (5)

Finally:

\theta_{2}=1.8\°   (6)

5 0
3 years ago
Why do adults make bigger splashes when they jump into swimming pools than small children?
Semenov [28]

Answer:

it bc the adults are bigger then us kid so when they dip in the pool it makes bigger splashes

Explanation:

5 0
3 years ago
What happens to the electric potential energy of a negatively charged ion as it moves through the water from the negative probe
Nataly [62]

Answer:

Decreases.

Explanation:

Electric potential energy is the potential energy which is associated with the configuration of points charge in a system and it is the result of conservative coulomb force.

When the negatively charge ion is at the position of the negative probe than its potential energy is positive when it is move towards the positive probe it's potential energy becomes negative due to the negative ion.

Therefore, potential energy is decreases when negative charge ion moves through the water from negative probe to positive probe.

5 0
3 years ago
A student swings a container of water in a vertical circle of radius 1.0 m. Calculate the minimum speed of the container so that
12345 [234]

Answer:

Explanation:

The centripetal acceleration requirement must equal gravity at the top of the circle

mg = mv²/R

  v = √Rg

  v = √(1.0(9.8))

  v = 3.1304951...

  v = 3.1 m/s

6 0
3 years ago
Other questions:
  • Based on their locations on the periodic table, which best compares the properties of the metalloids arsenic (As) and antimony (
    15·2 answers
  • An elite Tour de France cyclist can maintain an output power of 470 W during a sustained climb. Part A At this output power, how
    6·1 answer
  • You weight is result of the gravitational force of earth on your body what is the cor responding reaction force
    10·1 answer
  • If you added sand to your coffee, what kind of mixture would your coffee now<br> be?
    13·1 answer
  • Which of these Would you include in a free body diagram of a coin sitting on a table
    9·1 answer
  • Please help me!!!!!!!!!!!!!!!​
    7·1 answer
  • 6. Which formula could you use according to the scenario? Five grams of substance occupy 3 cm3 of a flask. Om = du OD Ot= d​
    8·1 answer
  • The mass of 25cm of ivory was found to be 0.045kg. caculate the density of ivory in SI units​
    9·1 answer
  • How many electrons should be in an atom’s valence shell (with the exception of hydrogen and helium) to become stable? 2 4 6 8.
    15·1 answer
  • Gravitational force exist between you and the building why are you not pulled towards the building?​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!