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frosja888 [35]
3 years ago
5

Hai xe chuyển động trên cùng một đoạn đường , khi xe (1) ở A thì xe (2) ở B phía trước với AB=5km . Xe (1) đuổi theo xe (2) . Tạ

i C cách B một đoạn BC=10km thì xe (1) đuổi kịp xe (2) . Tìm tỉ số vận tốc của hai xe
Physics
1 answer:
12345 [234]3 years ago
4 0

Answer:

b

Explanation:

because it shows you it

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WILL MARK BRAINLIST. HELP ASAP
Pachacha [2.7K]

Answer:

Less than the distance

3 0
3 years ago
What <br> material gives the soil its high fertility?
NARA [144]

Answer:

Humus

Explanation:

Its Humus I believe. I remember learning something like this.

8 0
2 years ago
During a neap tide, which phase could the moon be in? select all that apply
snow_lady [41]
Hello,

Here is your answer:

The proper answer to this question is option B "<span>third quarter".

Here is how:

Neap tides are caused when the moon is three thirds full which causes the current to up rise therefore making a neap tide.

Your answer is B.

If you need anymore help feel free to ask me!

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4 0
2 years ago
Read 2 more answers
The same 2000 kg truck formerly traveling at 32 m/s, plows into a
kvasek [131]

Answer: |F| = 1.28 x 10⁵ N

Explanation:

an impulse results in a change of momentum

FΔt = mΔv

F = m(vf - vi)/t

F = 2000(0 - 32) / 0.5

F = -128,000

|F| = 1.28 x 10⁵ N

5 0
3 years ago
two pendulums of lengths 100cm and 110.25cm start oscillating in phase. after how many oscillations will they again be in same p
goldfiish [28.3K]

Angular frequency of pendulum is given by

\omega = \sqrt{\frac{g}{l}}

for both pendulum we have

\omega_1 = \sqrt{\frac{9.81}{1.00}}

\omega_1 = 3.13 rad/s

For other pendulum

\omega_2 = \sqrt{\frac{9.81}{1.1025}}

\omega_2 = 2.98 rad/s

now we have relate angular frequency given as

[tex\omega_1 - \omega_2 = 3.13 - 2.98 = 0.15 rad/s[/tex]

now time taken to become in phase again is given as

t = \frac{2\pi}{\omega_1 - \omega_2}

t = \frac{2\pi}{0.15} = 41.88 s

now number of oscillations complete in above time

N = \frac{t}{\frac{2\pi}{\omega_1}}

N = \frac{41.88}{\frac{2\pi}{3.13}}

N = 21 oscillation


3 0
3 years ago
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