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vova2212 [387]
3 years ago
5

Henri Becquerel and the Curies found out that _____.

Physics
2 answers:
SIZIF [17.4K]3 years ago
5 0
Atoms were not indivisible and indestructible
Ainat [17]3 years ago
4 0
Atoms were not indivisible and indestructable
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Estimate the order of magnitude of the length of a football field,
marissa [1.9K]

Answer:

d

Explanation:

6 0
3 years ago
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Help mee plss its very urgent i need this before 11 pm est
dmitriy555 [2]

Answer:

7. 2 kg

8. 0.5 kg

9. 4 kg

Explanation:

The equation is F=MA

where F is force in Newtons

M is mass in kg

A is acceleration in m/s^2

for each you substitute in the F and A, and you are finding M. Meaning you divide F by A.

M = F/A

6/3 = 2

6/12 = 0.5

20/5 = 4

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3 years ago
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Calculating average speed
djverab [1.8K]

Average speed =

               (distance covered during some period of time)
divided by
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3 years ago
In a race, Usain bolt accelerates at 1.99 m/s^2 for the first 60.0 m, then decelerates at -0.266 m/s^2 for the final 40.0 m. How
GalinKa [24]
7 miles long i think bc i dont know bc i am bad at math and math is good
6 0
3 years ago
Stapp rode a rocket sled, accelerating from rest to a top speed of 282 m/s (1015 km/h) in 5.00 s, and was brought jarringly back
ser-zykov [4K]

Answer:

a)a=5.74\ g\ m/s^2

b)a=20.55\ g\ m/s^2

Explanation:

Given that

Initial velocity u =0 m/s

Speed at 5 s v= 282 m/s

Rocket accelerated up to 5 s :

We know that

v= u + at

282= 0+ a x 5

a=56.4\ m/s^2

So the acceleration

a=56.4\ m/s^2

a=5.74\ g\ m/s^2

Rocket come to rest in 1.4 s :

Final velocity of rocket v=0 m/s

Initial velocity = 282 m/s

v= u + at

0= 282 - a x 1.4

a=201.42\ m/s^2

a=20.55\ g\ m/s^2

So the deceleration

a=20.55\ g\ m/s^2

5 0
4 years ago
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