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Julli [10]
3 years ago
9

An object in free fall is dropped from a building. Its starting velocity is 0 m/s. Ignoring the effects of air resistance, what

is the speed (in m/s) of the object after falling 3 seconds
Physics
1 answer:
Amanda [17]3 years ago
7 0

Answer:

30m/s^2

Explanation:

Acceleration=Final Velocity-Initial Velocity/Time

10m/s^2= Final Velocity-0m/s/3

30m/s^2= Final Velocity

Final Velocity=30m/s^2

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How are observation and inference different
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3 0
4 years ago
What is the mass of a baseball clocked moving at a speed of 105 mph or 46.9 m/s and wavelength 9.74 × 10-35m?
Andrew [12]
For this problem to be solved, we make use of the de Broglie formula which is written below as follows:

λ = h/mv
where h is 6.626×10⁻³⁴ J·s

9.74 × 10⁻³⁵ m = 6.626×10⁻³⁴ J·s/ (m)(46.9 m/s)
Solving for m,
<em>m = 0.145kg</em>
6 0
3 years ago
The Venn diagram shown below compares the nuclear reactions in the sun and nuclear power plants.
inessss [21]

Answer:

In nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction or a radioactive deficiency process in which the nucleus of an atom split into 2 smaller, lighter nuclei.

7 0
4 years ago
Read 2 more answers
. Two parallel conducting plates are separated by 10.0 cm, and one of them is taken to be at zero volts. (a) What is the electri
exis [7]

Answer:

Explanation:

electrical field strength = potential diff / distance

= ( 450 - 0 ) / 8 x 10⁻²

= 5625 V/m

b )

potential difference = electric field x distance

= 5625 x .10

= 562.5 V

6 0
3 years ago
Can someone please help me answer 14 and 15??
ziro4ka [17]
14. The Aurora is an incredible light show caused by collisions between electrically charged particles released from the sun that enter the earth's atmosphere and collide with gases such as oxygen and nitrogen. The lights are seen around the magnetic poles of the northern and southern hemispheres.

15.
About 5.4 billion years from now, the sun will have exhausted all of its hydrogen. The sun's core will get really hot and dense, thus shrinking; however, the outer region of the sun will expand and grow. ... Even if the expanding dying sun doesn't reach Earth, the sun's high temperatures will completely burn the planet.
7 0
4 years ago
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