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zepelin [54]
3 years ago
12

The first scientist to show that atoms emit any negative particles was

Physics
1 answer:
densk [106]3 years ago
4 0
The first scientist to show that atoms emit any negative particles was : J.J Thomson
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Kenny klutz drops his physics book off his aunt's high-rise balcony.it hits the ground below 1.5 s later?
tatuchka [14]

Gravity causes a falling object to fall 9.8 m/s faster every second it falls.

Kenny's book started out with no speed when it was dropped. 
1.5 sec later, it was falling at (9.8 x 1.5) = 14.7 m/s .

During the fall, its average speed was  1/2(0 + 14.7) = 7.35 m/s .

Distance it covered = (average speed) x (time) =

                                             (7.35 m/s) x (1.5 sec) = 11.025 m

8 0
3 years ago
What is the purpose of chloroplasts, and why do you think it is missing from the root hair cell?
Karolina [17]

Explanation:

Mitochondria are essential parts of many eukaryotes, but they are useless without oxygen. Therefore, chloroplasts are extremely important. They produce breathable air for life. Root hairs are seen to not have chloroplasts as their job is to collect water and nutrients.

<h2><em><u>BRAINILIEST</u></em><em><u> </u></em><em><u>PLEASE</u></em><em><u> </u></em></h2>
8 0
3 years ago
Your physical education teacher has set up a modified shuttle run event for a class competition. From the starting position, you
motikmotik

+14-17+16-28 = -17+16-14 = -1-14=-15 ... west, and out of breath

3 0
3 years ago
If f^-1(y) is the inverse of f(x) which statements must be true?
Salsk061 [2.6K]
Let us assume f(x) = 2x - 5
f⁻¹(x) = (x + 5)/2
f(f⁻¹(x)) = 2((x + 5)/2) - 5 = x
f⁻¹(f(x)) = (2x - 5 + 5)/2 = x
The domain of a function is the range of its inverse and vice versa
The range of a function is the domain of its inverse and vice versa
Therefore, statements A, B, D and E are true
6 0
3 years ago
A coin released at rest from the top of a tower hits the ground after falling 1.5 s. What is the speed of the coin as it hits th
Reptile [31]

Initial speed of the coin (u)= 0 (As the coin is released from rest)

Acceleration due to gravity (a) = g = 9.81 m/s²

Time of fall (t) = 1.5 s

From equation of motion we have:

\boxed{ \bf{v = u + at}}

By substituting values in the equation, we get:

\longrightarrow v = 0 + 9.81 × 1.5

\longrightarrow v = 14.715 m/s

\therefore Speed of the coin as it hits the ground/Final speed of the coin = 14.715 m/s

6 0
3 years ago
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