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Yanka [14]
2 years ago
14

4. What is the coefficient of x in the expression x + 3y + 2? A. 0 B. 1 C. 2 D. 3

Physics
2 answers:
grigory [225]2 years ago
8 0

Answer:

B) 1

Explanation:

There is not a coefficient before x, so automatically the answer is 1

lord [1]2 years ago
7 0

Answer :-

Hi there!

\:\mathsf\red{Your\:answer\:is\:B.\:(1)}

<h2>Explantion :- </h2>

We know

Coefficient is the number or value which should be putten in front of the variable given.

Here,

'x' is the variable. Before <u>x</u>, there is no number mentioned. So the number would be 1.

\:\sf\purple{Hope\:this\:helps\:you!\::)}

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stira [4]

Answer:

Explanation:

Given

acceleration is given by

a=-g-c_Dv^2

where \ddot{y}=a

\dot{y}=v

Also acceleration is given by

a=v\frac{\mathrm{d} v}{\mathrm{d} s}

ds=\frac{v}{a}dv

\int ds=\int \frac{v}{-g-0.001v^2}dv

\Rightarrow Let -g-0.001v^2=t

-0.001\times 2vdv=dt

vdv=-\frac{dt}{0.002}

at\ v_0=50\ m/s,\ t=-g-0.001(50)^2

t=-g-2.5

at v=0,\ t=-g

\int_{0}^{s}ds=\int_{-g}^{-g-2.5}\frac{-dt}{0.002t}

\int_{0}^{s}ds=\int^{-g}_{-g-2.5}\frac{dt}{0.002t}

s=\frac{1}{0.002}lnt|_{-g}^{-g-2.5}

s=\frac{1}{0.002}\ln (\frac{g+2.5}{g})

s=113.608\ m

when air drag is neglected maximum height reached is

h=\frac{v_0^2}{2g}

h=\frac{50^2}{2\times 9.8}

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3 0
3 years ago
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8 0
3 years ago
Suppose you have two magnets. Magnet A doesn't have its poles labeled, but Magnet B does have a clearly labeled north and south
Elina [12.6K]

Before going to answer this question first we have to know the fundamental principle of magnetism.

A magnet have two poles .The important characteristic of a magnet is that like poles will repel each other while unlike poles will attract each other.

Through this concept the question can be answered  as explained below-

A-As per first option the side of  magnet A is repelled by the south pole  of magnet B. Hence the pole of a must be south .It can't be north as it will lead to attraction.

B-The side of magnet A is repelled by the  north pole of magnet B. Hence the side of A must be  north pole.It can't be a south pole.

C-The side of magnet A is attracted by the south pole  of magnet  B .Hence the side of magnet A must be north.Hence this is right

D-The side of magnet A is attracted by the north pole of magnet B. Hence the side of A must south.It can't be north as it will lead to repulsion.

Hence the option C is right.

3 0
2 years ago
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A car covers 400 km in an hour towards west .calculate the velocity​
crimeas [40]

Answer:

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Explanation:

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=400/1

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