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schepotkina [342]
3 years ago
6

Which statement best compares the accelerations of two objects in free fall?

Physics
2 answers:
Svetllana [295]3 years ago
3 0
Answer: option D). The objects have the same acceleration.

The acceleration of both objects is g (acceleration of gravity).

In freefall the only force acting is the attraction of the earth (gravity). There is not air resistance.The acceleration is not dependent either of the mass or the surface area of the object.
Dennis_Churaev [7]3 years ago
3 0

The answer is: D) The objects have the same acceleration.

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Which trophic level ingests the most biomass in order to receive the energy they need?.
Kitty [74]

Answer:

trophic level: primary consumers

Explanation:

a lot of producers are needed to be consumed to creat energy so that is I say trophic level 3

4 0
3 years ago
A fish swims 10 cm from the front wall of an aquarium that is 35cm wide. The front wall of the aquarium is glass with negligible
DanielleElmas [232]

El problema es un caso generalmente tipico en optica concerniente a Apparent depth vs real depth

We see the objects closer than their real depth to the surface. We see objects only if the rays coming from them reaches our eyes.

The equation is given by,

D_a = \frac{D_r}{\eta}

Where,

D_a =Apparenth depth

D_r =Real depth

\eta =Refractive index of the medium of object

For water \eta is equal to 1.33

<em>I attach an image of the theory that could help clarify the measurements.</em>

We have,

D_a = \frac{D_r}{\eta}

D_a = \frac{10}{1.333}

D_a = 7.5cm

<em>Therefore the apparent distance between the front wall of the aquarium to the fish is 7.5cm</em>

B) The distance between fish and mirror is given by,

d=35-10= 25

So we have that real distance from the front wall of to image of fish is

dr=25+35=60cm

Applying our equation we have that,

D_a = \frac{D_r}{\eta}

D_a = \frac{60}{1.333}

D_a = 45.1cm

<em>Therefore the apparent distance from the front wall of the aquarium to the image of the fish is 45.1cm</em>

<em />

<em />

4 0
3 years ago
Give two examples of direct current electricity.​
ludmilkaskok [199]

Answer:

<h3>Ion beams and Electrochemical are two examples of direct current electricity.</h3>
6 0
4 years ago
The position of an object that is oscillating on a spring is given by the equation x = (17.4 cm) cos[(5.46 s-1)t]. what is the a
bulgar [2K]

The angular frequency of this motion is 5.46 rad/s.

The oscillation of spring is an example of Simple Harmonic Motion(SHM).

The general equation of an SHM is given by the formula.

X = Acos(wt)

Here A is the amplitude

ω is the angular frequency

T is the time

Comparing the above equation with the given condition,

X = 17.4 cm cos(5.46t)

A = 17.4 cm

ω = 5.46 rad/s

T = 1 s

Hence, the angular frequency of this motion is 5.46 rad/s.

To know more about the "general equation of SHM", refer to the link below:

brainly.com/question/14869852?referrer=searchResults

#SPJ4

6 0
2 years ago
It took 500 N of force to push a car 4 meters. How much work was done?
djverab [1.8K]

Answer:

200 J

Explanation:

W = F S

W= 500 x 4

W = 2000

6 0
3 years ago
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