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2 years ago

WILL GIVE BRAINLEIST!!! PLEAAE HLEPNME

Physics

2 answers:

Lubov Fominskaja [6]2 years ago

3 0

Answer:

The oxidation state

Explanation:

hope i helped

Ψ(￣∀￣)Ψ

AfilCa [17]2 years ago

3 0

Answer:

Oxidation state: the charge an atom has if it was bonded ionically to other atoms. Different oxidation states indicate different abilities to bond with other atoms.

Explanation:

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Select the correct answer from each drop-down menu.

fgiga [73]

Low place to a high place I think

5 0

2 years ago

Read 2 more answers

A rocket takes off from Earth and reaches a speed of 105 m/s in 18.0 s. If the exhaust speed is 1,200 m/sand the mass of fuel bu

Amanda [17]

Answer:

The initial mass of the rocket is 526.2 kg.

Explanation:

Given that,

Final speed = 105 m/s

Time = 18.0 s

Exhaust initial speed = 1200 m/s

Mass of burned fuel = 110 kg

We need to calculate the initial mass

The velocity change of rocket under gravity is defined as,

$v=u\ ln(\dfrac{m_{i}}{m})-gt$ ....(I)

We know that,

$m=m_{i}-m_{bf}$

Put the value of m in equation (I)

$v=u\ ln(\dfrac{m_{i}}{m_{i}-m_{bf}})-gt$

$m_{i}=\dfrac{m_{bf}}{1-e^-{\dfrac{v+gt}{u}}}$

$m_{i}=\dfrac{110}{1- e^-{\frac{105+9.8\times18}{1200}}}$

$m_{i}=526.2 kg$

Hence, The initial mass of the rocket is 526.2 kg.

7 0

2 years ago

calculate the force between two objects that have masses of 20 kg and 100 kg separated by a distance of 2.6 m

olga55 [171]

The gravitational force between the objects is $1.97\cdot 10^{-8} N$

Explanation:

The magnitude of the gravitational force between two objects is given by the equation:

$F=G\frac{m_1 m_2}{r^2}$

where

$G=6.67\cdot 10^{-11} m^3 kg^{-1}s^{-2}$ is the gravitational constant

$m_1, m_2$ are the masses of the two objects

r is the separation between the objects

For the two objects in this problem:

$m_1 = 20 kg\\m_2 = 100 kg$

And their distance is

r = 2.6 m

So, the gravitational force between them is

$F=\frac{(6.67\cdot 10^{-11})(20)(100)}{2.6^2}=1.97\cdot 10^{-8} N$

Learn more about gravitational force:

brainly.com/question/1724648

brainly.com/question/12785992

#LearnwithBrainly

7 0

2 years ago

Although the evidence is weak, there has been a concern in recent years over possible health effects from the magnetic fields ge

sergey [27]

Answer:

The magnetic field strength is $B = 2 \mu T$

Explanation:

From the question we are told that

The length line above the ground is $R = 20m$

The current of the line is $I = 200A$

The voltage of the line is $V = 110kV$

Generally magnetic field strength is mathematically represented as

$B = \frac{\mu_o I}{2 \pi R}$

Where $\mu_0$ is the permeability of free space $= 4\pi * 10^{-7} N/A^2$

$B = \frac{(4\pi * 10^{-7} N/A^2) *200}{2 \pi *20}$

$= (2.0*10^{-7})[\frac{200}{20} ]$

$= 2*10^{-6}T$

$= 2 \mu T$

Earths magnetic field is approximately given as $50 \mu T$

So the percentage would be

$= \frac{Magnetic \ Field \ Intensity \ Of \ Line}{Earth's \ Magnetic \ Field} * 100$

$= \frac{2 \mu T }{50 \mu T } * 100$

$=4$ %

7 0

2 years ago

Three multiple choice science questions.

Ratling [72]

C
A
B
I HOPE THIS HELPS

6 0

2 years ago