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dsp73
3 years ago
14

Astronauts in orbit are not truly weightless. True or False?

Physics
2 answers:
Gwar [14]3 years ago
8 0
I believe is true !!!!!!!!
jok3333 [9.3K]3 years ago
6 0
True
hope that helps lol
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The average height of an apple tree is 4.00 meters. How long would it take an apple falling from that height to reach the ground
kati45 [8]

Answer:

The time is 0.90 sec.

Explanation:

Given that,

Height = 4.00 m

We need to calculate the time

Using equation of motion

s = ut-\dfrac{1}{2}(-g)t^2

For free fall, u = 0

t =\sqrt{\dfrac{2s}{g}}

Where, s = distance

g = acceleration due to gravity

t = time

Put the value into the formula

t =\sqrt{\dfrac{2\times4.00}{9.8}}

t= 0.90\ sec

Hence, The time is 0.90 sec.

3 0
3 years ago
What is the medium through which sound travels inside a bird’s body? (HINT: three-letter word)
Korvikt [17]

The medium through which sound travels inside a bird’s body is the air. This is further explained below.

<h3>What is Air?</h3>

Generally, Air is simply defined as the invisible combination of gases, and this gas exists around the Earth.

In conclusion, Sound wave allows birds to communicate.

Read more about sound

brainly.com/question/14595927

#SPJ1

4 0
2 years ago
An electromagnetic wave has a frequency of 4.0 x 10^18 Hz. What is the wavelength of the wave?
LenaWriter [7]

Answer:

7.5 × 10^-11 m

Explanation:

Hope this helps !

3 0
3 years ago
Read 2 more answers
Newtons second law in words??​
Dennis_Churaev [7]

Answer:

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object

Explanation:

it's newton's second law

5 0
2 years ago
A ray of red light in air is incident at an angle of 30. on a
Vlad [161]

Answer:

20 degrees.

Explanation:

From Snell’s law of refraction:

sinθ1•n1 = sinθ2•n2

where θ1 is the incidence angle, θ2 is the refraction angle, n1 is the refraction index of light in medium1, and n2 is the refraction index for virgin olive oil. The incidence angle of the red light is θ1 = 30 degrees.

The red light is in air as medium1, so n1 (air) = 1.00029

So, to find θ2, the refracted angle:

sinθ1•1.00029 = sinθ2•1.464

sin(30)•1.00029 / 1.464 = sinθ2

0.5•1.00029 / 1.464 = sinθ2

sinθ2 = 0.3416291

θ2 = arcsin(0.3416291)

θ2 = 19.976 degrees

To the nearest degree,

θ2 = 20 degrees.

8 0
2 years ago
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