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
DochEvi [55]
3 years ago
6

A sound wave from a jackhammer travels through a section of concrete with a fixed frequency. At the concrete's boundary is mud.

The diagram below shows the path of the sound wave as it travels from the concrete into the mud. What happens to the sound wave when it passes from the concrete into the mud? A. Its direction and speed remains the same. B. Its direction and speed changes. C. Its direction changes but speed remains the same. D. Its direction remains the same but speed changes.
Chemistry
2 answers:
Ira Lisetskai [31]3 years ago
6 0

Answer:

It might be too late now, but the correct answer for the question is B.

Explanation:

According to the graph you can see when it hit the boundary of the mud it curved downward making the direction change; which then the mud probably had a hollow shell, where the speed was moving much faster.

kaheart [24]3 years ago
5 0

Answer:

B. It's direction and speed changes.

Explanation:

I just got it right.

You might be interested in
Convert 16.8 L of nitrogen monoxide gas at STP to grams .
german

Answer:

See explanation

Explanation:

1 mole of a gas occupies 22.4 L

x moles occupies 16.8 L

x = 1 mole *  16.8 L/22.4 L

x = 0.75 moles

number of moles = mass/molar mass

mass =  number of moles  * molar mass

mass =  0.75 moles * 30.01 g/mol = 22.5075 g = 2.25 * 10^1 g

the coefficient of the scientific notation answer = 2.25

the exponent of the scientific notation answer = 1

significant figures are there in the answer = 6

the right most significant figure in the answer = 3

2.

number of moles = 12.5g/38g/mol = 0.3289 moles

1 mole occupies 22.4 L

0.3289 moles occupies 0.3289 moles * 22.4 L/1 mole

= 7.36736 L = 7.36736 * 10^0 L= 7.37 * 10^0 L

the coefficient of the scientific notation answer =7.37

the exponent of the scientific notation answer = 0

significant figures are there in the answer = 6

the right most significant figure in the answer= 3

8 0
3 years ago
Which statement correctly identifies the nuclide that is most likely to be unstable and describes why?
iVinArrow [24]
The answer would be B.

U-238 has a n to p ration of 1.6:1. 146 neutrons and 92 protons.

It is actually the most commonly used isotope is reactors.

C-14 is also a radioactive isotope with 8 neutrons and 6 protons.

The usual and ideal n to p ratio is 1:1 such as C-12 or Mg-24
8 0
3 years ago
Solution A has a pH of 10, and solution B has a pH of 1. Which statement best describes these solutions?
Free_Kalibri [48]

Answer:

Solution A is a Weak Alkali, Solution B is a strong Acid.

Explanation:

At pH 10, the colour is blue, therefore it's a weak alkali.

At pH 1, the colour is red, therefore it's a strong Acid.

7 0
3 years ago
X) = 3x - 13<br> g(x) = 2x2 - 4x-5<br> {x) = -4-7<br> 6. Find (f- g(x).
Nastasia [14]

Answer:

sorry

Explanation:

don know

8 0
3 years ago
True or false.<br> A bond between a metal atom and a nonmetal atom is likely an iconic bond
vlada-n [284]
It is true...obviously

5 0
3 years ago
Other questions:
  • Which of the following would result in decreased entropy?
    8·2 answers
  • What does the wavelength of a wave measure?
    6·2 answers
  • What makes metalloids a group of their own?
    12·2 answers
  • What element can scratch a diomand?
    5·1 answer
  • Please help!!! ill mark u brainly
    12·1 answer
  • Which of the following statements is true about the relationships between photon energy, wavelength, and frequency?
    13·1 answer
  • Use the provided reduction potentials to calculate ArGº for the following balanced redox reaction: Pb2+(aq) + Cu(s) → Pb(s) + Cu
    5·1 answer
  • How does one recognize a redox reaction?
    13·1 answer
  • What do scientist use to form a hypothesis
    15·2 answers
  • Use the information from the diagram to calculate the enthalpy of combustion for methane. (HELP ASAPPP!!)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!