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dybincka [34]
2 years ago
6

A baseball is hit high and far. Which of the following statements is true? At the highest point,

Physics
1 answer:
erma4kov [3.2K]2 years ago
6 0

Answer:

option C

Explanation:

When the baseball is hit high and far it has some horizontal velocity at the highest point so option an i.e. velocity at the highest point is eliminated.

the baseball act as a projectile at the highest point so, there is always downward acceleration acting on the body. so, option e and d is eliminated.

At the highest point, the vertical velocity is zero and neglecting the air resistance we can say that the velocity of the body is slowest.

Hence, the correct answer is option C

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the density of dry air at 20 degrees celsius is 1.20 g/L. What is the mass of air, in kilograms, of a room that measures 24.0m b
horsena [70]
<h2>Mass of air in a room that measures 24.0 m by 15.0 m by 4.0 m is 1728 kg.</h2>

Explanation:

Density of air = 1.20 g/L = \frac{1.20\times 10^{-3}kg}{10^{-3}m^3}=1.2kg/m^3

Size of room is 24.0m by 15.0 m by 4.0 m

Volume of room = 24 x 15 x 4 = 1440 m³

We know the equation

            Mass = Volume x Density

            Mass = 1440 x 1.2

            Mass = 1728 kg  

Mass of air in a room that measures 24.0 m by 15.0 m by 4.0 m is 1728 kg.

8 0
3 years ago
Anyone who is willing to help me do some 8th grade science questions<br>NO LINKS
NISA [10]

Answer:

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Explanation:

3 0
3 years ago
Electromagnetic waves differ from the other types of waves because they are
Ronch [10]

Correct answer choice is :



B) Able to travel through a vacuum.



Explanation:



Electromagnetic waves are applied to carry long/short/FM wavelength radio waves, and TV/telephone/wireless signals or services. They are also effective for transferring energy in the form of microwaves, infrared radiation, visible light, ultraviolet light, X-rays, and gamma rays. Electromagnetic waves change from mechanical waves in that they do not need a medium to generate. This means that electromagnetic waves can move not only in the air and solid matters but also in the void of space.


Read more on Brainly.com - brainly.com/question/1697984#readmore

4 0
3 years ago
Read 2 more answers
True or False:
bulgar [2K]

Answer:

False

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True

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8 0
3 years ago
Which graph shows an object that is dropped?
Olegator [25]

Answer:

I'm pretty sure it's the third one where velocity goes from positive to negative

Explanation:

the positive velocity is before the object hits the ground and the negative is after

8 0
3 years ago
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