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
prisoha [69]
2 years ago
6

A table tennis ball with a mass of 0. 003 kg and a soccer ball with a mass of 0. 43 kg are both set in motion at 16 m/s. Calcula

te and compare the momenta of both balls.
SAT
1 answer:
NikAS [45]2 years ago
4 0

Answer:

0.048 kgm/s, 6.88 kgm/s

Explanation:

m = 0.003 kg, M = 0.43 kg, v = 16 m/s

The momentum of a table tennis ball = mv = 0.003 * 16 = 0.048 kgm/s

The momentum of a soccer ball = Mv = 0.43 * 16 = 6.88 kgm/s

The two balls have same speed, but different masses. A table tennis ball has smaller mass, so the momentum is smaller too.

You might be interested in
A bat emits a sound at a frequency of 3. 00 × 104 hz as it approaches a wall. The bat detects beats such that the frequency of t
OLga [1]

Taking into account the Doppler efect, the speed of the bat is closest to 5.02 \frac{m}{s}.

The Doppler effect is defined as the apparent frequency change of a wave produced by the relative movement of the source with respect to its observer. In other words, this effect is the change in the perceived frequency of any wave motion when the sender and receiver, or observer, move relative to each other.

The following expression is considered the general case of the Doppler effect:

f1=f\frac{v+-vR}{v+-vE}

Where:

  1. f1, f: Frequency perceived by the receiver and frequency emitted by the issuer respectively. Its unit of measurement in the International System (S.I.) is the hertz (Hz), which is the inverse unit of the second (1 Hz = 1 s⁻¹)
  2. v: Velocity of propagation of the wave in the medium. It is constant and depends on the characteristics of the medium. In this case, the speed of sound in air is considered to be 340 m/s
  3. vR, vE: Speed ​​of the receiver and the sender respectively. Its unit of measure in the S.I. is the m/s
  4. ±, ∓:
  • We will use the + sign:

In the numerator if the receiver approaches the sender

In the denominator if the sender moves away from the receiver

  • We will use the sign -:

In the numerator if the receiver moves away from the emitter

In the denominator if the sender approaches the receiver

In this case, a bat emits a sound at a frequency of 3.00×10⁴ Hz= 30,000 Hz as it approaches a wall.

The bat detects beats such that the frequency of the echo is 900 hz higher than the frequency the bat is emitting.

So, you know:

  • f1= 30,000 Hz + 900 Hz= 30,900 Hz
  • f= 30,000 Hz
  • v= 340 m/s
  • vE=vR= vbat
  • Receiver approaches the sender

Replacing in the expression is considered the general case of the Doppler effect:

30900 Hz=30000 Hz\frac{340 \frac{m}{s} +vbat}{340\frac{m}{s} -vbat}

Solving:

\frac{30900 Hz}{30000 Hz} =\frac{340 \frac{m}{s} +vbat}{340\frac{m}{s} -vbat}

1.03=\frac{340 \frac{m}{s} +vbat}{340\frac{m}{s} -vbat}

1.03×( 340\frac{m}{s} -vbat)= 340 \frac{m}{s} + vbat

1.03×340\frac{m}{s} - 1.03×vbat= 340 \frac{m}{s} + vbat

350.2\frac{m}{s} - 1.03×vbat= 340 \frac{m}{s} + vbat

350.2\frac{m}{s} - 340 \frac{m}{s}= vbat + 1.03×vbat

10.2 \frac{m}{s}= 2.03×vbat

10.2 \frac{m}{s}÷ 2.03 = vbat

<u><em>5.02 </em></u>\frac{m}{s}<u><em>= vbat</em></u>

In summary, the speed of the bat is closest to 5.02 \frac{m}{s}.

Learn more about the Doppler effect:

  • brainly.com/question/17107808
  • brainly.com/question/14929897
6 0
2 years ago
Who sings RANADA <br> A.) Post Malone <br> B.)Travis Scott <br> C.) NBA Youngboy
joja [24]

Answer:

c

Explanation:

3 0
3 years ago
Read 2 more answers
In what ways does the belief in witches influence both the settingan
DaniilM [7]

Answer:

yes

Explanation:

i need youuuuu

3 0
3 years ago
Which of the following will be the ratio of the perimeter of the blue triangle to the red triangle.
Kazeer [188]

The ratio (red to blue) of the perimeters of the similar triangles is 12:7

Assuming that the similar triangles are equilateral triangles, then all their sides will be equal.

Perimeter of a triangle = s1 + s2 + s3

For the red triangle;

Perimeter of the red triangle = 12 + 12 + 12

Perimeter of the red triangle = 36

For the blue triangle:

Perimeter of the blue triangle = 7 + 7 + 7

Perimeter of the blue triangle = 21

Taking the ratio of their perimeters;

Ratio of red to blue = 36:21 = 12:7

Hence the ratio (red to blue) of the perimeters of the similar triangles is 12:7

Learn more here: brainly.com/question/15046223

8 0
3 years ago
How long ago did oceans begin to form? 12. 5 MYA 137 MYA 285 MYA 3800 MYA.
Igoryamba
Yo no se perdon! Yo no seeeeeeeeeeeeeeeee
5 0
2 years ago
Other questions:
  • Read the following passage to answer questions 7 and 8. The sentences are numbered to help you answer the questions
    5·1 answer
  • The ____________ and the gall bladder work together to produce, store, and use bile to help digest ___________. A) liver; fats B
    8·2 answers
  • If I tag someone on my private story and they are not on it will they still see it?
    8·2 answers
  • Just because i loved this &lt;3
    8·1 answer
  • Find mean and median​
    13·1 answer
  • After Li Shimin ascended the throne, he actively listened to the opinions of his ministers, ruled the world with civility, and e
    11·1 answer
  • Both mitosis and meiosis are forms of cell division that produce daughter cells containing genetic information from the parent c
    15·1 answer
  • Which statements accurately describe the persian wars.
    10·1 answer
  • How do scientists measure the strength of acids and bases
    8·1 answer
  • During a group therapy session, a client with hypomania threatens to strike another client. What intervention is best for the nu
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!