PHYSICS HIGH SCHOOL

Which term defines the process of a wave bending as it enters a new medium?A. reflection
B. refraction
C. destructive bending
D. constructive bending

Answers

Answer 1
Answer: The term that defines the process of a wave bending as it enters a new medium is called B. REFRACTION

Refraction is the bending of a wave when it enters a medium where its speed is different. This phenomenon is explained by the conservation of energy and conservation of momentum.

Law of Conservation of energy states the total energy of an isolated system remains constant.

law of conservation of momentum states that in a closed system the total momentum is constant.

In refraction, when a medium changes, the phase velocity also changes but its frequency does not; it remains constant.



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What happens as a result of an increase in the intensity of a sound wave? -the frequency of a soundwave increases. -the velocity of the sound wave decreases. -the energy of the soundwave increases. -the amplitude of the soundwave decreases

Answers

As a result of an increase in the intensity of a sound wave, the energy of the sound wave increases!

Answer: c. The energy of the sound wave increases.

Explanation:

How much work does a person do in pushing a box with a force of 10 N over a distance of 4.0 m in the direction of the force?

Answers

There's an equation that says work = force * distance * cos (theta)

Theta being the angle between the surface and the object.

So, since the direction is the same as that of the force, you can say that theta is equal to zero.

Cos (0) = 1

So, W = (10) * (4) * (1) = 40 Joules

Imagine that a car is traveling from your left to your right at a constant velocity. Which two actions could the driver take that may be represented as (a) a velocity vector and an acceleration vector both pointing to the right and then (b) changing so the velocity vector points to the right and the acceleration vector points to the left?

Answers

Answer:

(a). The speed of car will increases.

(b). The speed of car will decreases.

Explanation:

Given that,

A car is traveling from your left to your right at a constant velocity.

We need to find two actions could the driver take

Using given data

(a). If the velocity and acceleration of car to the right

It means the velocity and acceleration of car is in same direction then the speed of car will increases.

(b). If the velocity to the right and the acceleration to the left

It means the velocity and acceleration of car is in opposite direction then the speed of car will decreases.

Hence, (a). The speed of car will increases.

(b). The speed of car will decreases.

Which of the following is the best example of a proper hypothesis? Orange popsicles taste sweeter than grape popsicles. If two objects are dropped at the same height, the heavier object will hit the ground first. Children who wear backpacks do better academically. I think there is no effect on hearing if you listen to loud music only three hours a day.

Answers

Answer:

If two objects are dropped at the same height, the heavier object will hit the ground first.

Explanation:

A proper hypothesis has the form:

"If ... , then ... ".

Now, why the other sentence aren't hypothesis?

  • Orange popsicles taste sweeter than grape popsicles.

This sentence its an OPINION. It may be true that, for the speaker/writer, orange popsicles taste sweeter, but this is an subjective opinion, and difficult to test.

  • Children who wear backpacks do better academically.

This sentence its an STATEMENT. If we wish to make an proper hypothesis, it should take the form:

If children wear backpacks, then they do better academically.

  • I think there is no effect on hearing if you listen to loud music only three hours a day.

This sentence its another OPINION.  This opinion COULD be tested, but the proper way of write it as an hypothesis would be:

If someone listed to loud music only three hours a day, then there shoul be no effect on his/her hearing.

Answer:

Answer is:If two objects are dropped at the same height, the heavier object will hit the ground first.

Explanation:

Ammonia is a weak base because produce ____ ion in solution?

Answers

ammonia is a weak base  ( electrolyte) because ammonia reacts with water to produce ammonium and hydroxide ions. When hydroxide ion reacts with ammonium, it results to water and ammonia. it only proves that ammonia is rather a base because of its acceptance of hydrogen ion from water.

Ammonia is a weak base because it produces hydroxide (OH-) ions in solution.

Why is ammonia a weak acid?

Ammonia is a weak base because it produces hydroxide ions (OH-) in solution.

When ammonia dissolves in water, it accepts a proton from water, forming the ammonium ion (NH4+), and leaves hydroxide ions behind. This partial dissociation results in a small concentration of hydroxide ions, causing the solution to be slightly basic.

Unlike strong bases, which fully dissociate and release a large number of hydroxide ions, ammonia's limited ability to produce hydroxide ions makes it a weak base.

More on ammonia can be found here:brainly.com/question/29519032

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How do I calculate the equivalent resistance?

Answers

you need to specify between which nodes.

Rab = R1+R5+R3 ; R2,R4 are ignored because CD is opened curcuit.

Rbd = R3 + R4

anyway, the cuircuit seems incomplete
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