PHYSICS HIGH SCHOOL

Who Can Help ? Much Love If You Can .Select all that apply.
A convex lens _____.

converges light
bulges in the middle
diverges light
is thinner in the middle

Answers

Answer 1
Answer:

Answer:

Options C and the D are the correct answer.

Explanation:

There are two types of lenses: concave lenses and convex lenses. A convex lens is thinner in the middle. On the other hand, convex lenses are also called diverging lens because after the light passes through it, the ray light spreads out. Due to this, diverges light and is thinner in the middle are the correct answer.
Answer 2
Answer: converges light to a focal point.

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According to the law of conservation of mass, in a chemical reaction, the mass of the reactant will always be different from the mass of the product.

Answers

That is not true.

According to the law of conservation of mass, in a chemical reaction, the mass of the reactants will always be the same as the mass of the products.

A police car is parked by the side of a highway and its siren emits a sound measuring 750 Hz. As you approach the police car from a distance, you hear a change in the sound. The change is in the sound's

Answers

As you approach the police car with blaring siren, you hear a change in pitch and frequency. The apparent pitch changes as a result of the Doppler effect. Frequency determines pitch; frequency and wavelength are inversely proportional. You wouldn't "hear" either one. The result is pitch.

D) pitch and frequency.

Answer:

The correct answer would be frequency, intensity, and amplitude.

It can be explained with the help of Doppler effects which states that the frequency or wavelength of sound changes (increases or decreases) as source and observer move towards or away from each other.

Due to this effect, the frequency and intensity of siren increase as we move towards the siren.

In addition, amplitude also increases as we move towards the source of the sound and decreases as the observer moves away from the source.

Why evaporation are called surface phenomenon?

Answers

It is called surface phenomenon because when the molecules at the surface obtain kinetic energy because of heat and light absorption and overcome binding forces and then evaporate out so it is called surface phenomenon....
The water formed on the surface of the water evaporation loss (evaporation), consisting of plant transpiration water loss (transpiration) is called. Soil near the plant and the resulting water loss is called by evapotranspiration.

Find the total displacement of a mouse that travels 1.0m north and then 0.8m south.

Answers

           In this case two vectors are colinear and they have an opposite orientation.
           N + ( - S ) = N - S = 1 m - 0.8 m = 0.2 m
           Answer:
           The total displacement is 0.2 m north.
 

Prior to determining the experimental design, a scientist typically? A. makes observations. B. forms a hypothesis. C. performs an experiment. D. predicts the result of an experiment.

Answers

Prior to determining the experimental design, a scientist typically forms a hypothesis. The answer is letter B. this is to prepare the scientist, the possible outcome of their research before the experimental design whether they are wrong or not.

Suggest why signals to satellites are transmitted as slightly divergent beam and not as a parallel beam.

Answers

I can think of two reasons:

1).  EVERY transmitted radio signal is transmitted as
a divergent beam.  We don't have the technology to
transmit it as a perfectly parallel beam.
That's a good thing, because ...

2).  If it were a perfect pencil-thin parallel beam, then
it would be practically impossible to keep it perfectly
aimed at the satellite.
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