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
Ronch [10]
3 years ago
5

Please help me!!!.......​

Physics
1 answer:
nignag [31]3 years ago
6 0

Answer: its a

Explanation:

You might be interested in
Waves can transfer energy through
lina2011 [118]

Answer:

electromagnetic waves

Explanation:

"wave" is a common term for a number different ways in which energy is transferred

3 0
3 years ago
The moment of a force is calculated from the product of the ———— and the———— distance from the line of action of the force to th
bixtya [17]

Answer: It is the product of the (force)multiplied by the (perpendicular) distance from the line of action of the force to the pivot

Explanation:

7 0
3 years ago
A ray of light crosses a boundary between two transparent materials. The medium the ray enters has a larger optical density. Whi
Tpy6a [65]

Answer:

The wavelength of the light decreases as it enters into the medium with the greater optical density.

The frequency of the light remains constant as it transitions between materials.

Explanation:

- When a ray of light crosses a boundary between two different materials, it undergoes refraction: the ray changes direction, and it also changes speed, according to the relationship:

v=\frac{c}{n}

where v is the speed of the ray of light in the material, c is the speed of light in a vacuum, n is the index of refraction of the material, which is larger for a medium with larger optical density. So, from the equation, we see that the larger the optical density, the smaller the speed of the wave.

- The frequency of the light does not depend on the properties of the medium, so it remains unchanged: therefore the statement

The frequency of the light remains constant as it transitions between materials.

is correct.

- Moreover, the wavelength of the ray of light is related to the speed and the frequency by the equation

\lambda=\frac{v}{f}

where v is the speed and f the frequency. Since we have seen that v decreases and f remains constant, this means that the wavelength decreases as well, so the statement

The wavelength of the light decreases as it enters into the medium with the greater optical density.

is also correct.

5 0
3 years ago
A giraffe is slowly walking across a field. Is it balanced or unbalanced?
vodka [1.7K]
Your answers are correct
3 0
3 years ago
Explain why objects moving in fluids must have special shapes ?
Alexus [3.1K]

Explanation:

Fluids exert both drag and lift forces on moving objects.  Drag is the frictional force opposing motion.  Lift is the force perpendicular to motion.

Some objects, like parachutes, are designed with large cross sectional areas to increase drag force.  Usually though, objects are designed to minimize drag force.  It's why cars, planes, and boats have sleek shapes.

Airplane wings have shapes called airfoils that generate lift.  It's what makes them fly.  The same shape is found in racecar spoilers.  These spoilers use lift force to push down on the rear tires, increasing traction.

8 0
3 years ago
Other questions:
  • If the diameter of each of a car's wheels is 0.4 meters, approximately, what was the average speed of the car for its three-hour
    5·2 answers
  • Does friction cause mechanical energy to change to thermal energy
    13·1 answer
  • If the kinetic energy of a particle is doubled, by what factor has its speed increased?
    11·2 answers
  • You heat up a 3.0 kg aluminum pot with 1.5 kg of water from 5 to 90o Celsius. The specific heat capacity of Aluminum is 900 J/kg
    5·1 answer
  • Electrons move from negative to positive while the voltage flows ________ to _______ .
    9·1 answer
  • How far away is the furthest artificial satellite orbiting earth?
    10·1 answer
  • 1. A block with a mass of 5.0 kg is pushed on a frictionless surface by applying a horizontal force of 80.0 N. The block starts
    13·1 answer
  • Which of the following choices correctly pairs the organism with its phylum?
    13·1 answer
  • Glucose solution is administered to a patient in a hospital. The density of the solution is 1.308 kg/l. If the blood pressure in
    10·1 answer
  • A vector is something with a magnitude and direction. Explain in 1 or 2 sentences the analogy between a vector and the voltage d
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!