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
tiny-mole [99]
3 years ago
7

Which best describes reflection and refraction? Waves change direction when encountering boundaries in reflection but not in ref

raction.
Waves change direction when encountering boundaries in refraction but not in reflection.

Waves change direction when encountering boundaries in both reflection and refraction.

Waves do not change direction when encountering boundaries in either reflection or refraction.


ANSWER: Waves change direction when encountering boundaries in both reflection and refraction.
Physics
2 answers:
Radda [10]3 years ago
9 0

Answer :Waves change direction when encountering boundaries in both reflection and refraction.

Explanation:

zmey [24]3 years ago
4 0

When a wave bounces off a barrier and changes direction that is called reflection. Refraction, however occurs when a wave changed mediums, so if a wave were to go from moving in air to moving in water, the wave would change a direction that is based upon the index of refraction of that given medium.

So, if the answer is classifying a medium as a "boundary" then yes, they both change direction, however, a physical boundary only causes a change in direction in reflection.

You might be interested in
Two people are each
docker41 [41]

Answer:

the rope should break

Explanation:

she with equal amounts of pulling are on each side then the rope should slowly start to tare apart and snap/break.

hope this helps you

3 0
2 years ago
Astronomers discover a bright X-ray source in the Milky Way. They see no counterpart in the optical bands, but it has another st
VladimirAG [237]

Answer:

a. a black hole

Explanation:

X-ray emission from the central degrees of the Milky Way Bright X-ray emission traces the coherent edge brightened shell-like feature, dubbed the northern chimney, located north of Sgr A* and characterized by a diameter of about 160 pc. On the opposite side, the southern chimney appears as a bright linear feature. Bright X-ray emission is observed at high latitude

8 0
3 years ago
ou purchase a rectangular piece of metal that has dimen- sions 5.0 * 15.0 * 30.0 mm and mass 0.0158 kg. The seller tells you tha
Natalija [7]

Answer: 7022.2kg/m³, yes, I was cheated

Explanation:

Density of an object is defined as the ratio of the mass of the object to its volume. Mathematically;

Density = Mass/Volume

Note that the unit of both mass and volume must be standard unit.

Given mass = 0.0158kg

Dimension of the metal = 5mm×15mm×30mm

Note that 1mm = 0.001m

The volume of the metal will be

0.005×0.015×0.03

= 0.00000225m³

Density = 0.0158/0.00000225

Average density of the metal = 7022.2kg/m³

Since the standard density of Gold is 19,320kg/m³ and is higher than the density prescribed for me, it shows the I was cheated.

4 0
3 years ago
Speed is a component of skill related fitness what does speed enable you to do.
Mrrafil [7]

I'd say move faster, unless it's asking something else.

7 0
3 years ago
A basketball player is 4.22 m from
max2010maxim [7]

Answer: The height above the release point is 2.96 meters.

Explanation:

The acceleration of the ball is the gravitational acceleration in the y axis.

A = (0, -9.8m/s^)

For the velocity we can integrate over time and get:

V(t) = (9.20m/s*cos(69°), -9.8m/s^2*t + 9.20m/s^2*sin(69°))

for the position we can integrate it again over time, but this time we do not have any integration constant because the initial position of the ball will be (0,0)

P(t) = (9.20*cos(69°)*t, -4.9m/s^2*t^2 + 9.20m/s^2*sin(69°)*t)

now, the time at wich the horizontal displacement is 4.22 m will be:

4.22m = 9.20*cos(69°)*t

t = (4.22/ 9.20*cos(69°)) = 1.28s

Now we evaluate the y-position in this time:

h =  -4.9m/s^2*(1.28s)^2 + 9.20m/s^2*sin(69°)*1.28s = 2.96m

The height above the release point is 2.96 meters.

3 0
3 years ago
Read 2 more answers
Other questions:
  • An automobile with a radio antenna 1.0 m long generates an emf, V1, since it is traveling at 100.0 km/h in a location where the
    14·2 answers
  • A block of mass 0.1 kg is attached to a spring of spring constant 22 N/m on a frictionless track. The block moves in simple harm
    9·1 answer
  • Powered ventilation systems should be turned on for how many minutes before starting the engine to ensure all gasoline vapors ha
    9·2 answers
  • Are materials that dissolve in water hydrophobic or hydrophilic
    7·2 answers
  • A truck covers 40.0 m in 7.10 s while uniformly slowing down to a final velocity of 2.05 m/s.
    8·1 answer
  • How do think animals grow from babies to adults
    7·1 answer
  • The vector sum of the forces acting on the beam is zero, and the sum of the moments about the left end of the beam is zero. (a)
    11·1 answer
  • A scientist wants to use a model to help present results of his detailed scientific investigation
    13·1 answer
  • Why was Earth very hot at the beginning of its formation? Select all that apply.
    9·1 answer
  • Describe the motion of an object as it accelerates. IN YOUR OWN WORD!! ASAP
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!