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3 years ago

Determine the Net Force acting on the object (represented by the solid circle) in this diagram.

Physics

1 answer:

wlad13 [49]3 years ago

6 0

Answer:

200 N to the left

Explanation:

If we say left is negative and right is positive, then the net force is:

∑F = -300 N + 100 N

∑F = -200 N

The net force is 200 N to the left.

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Why a steel ship becomes magnetized as it is constructed?

Inessa [10]

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4 years ago

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3 years ago

The velocity of a particle traveling in a straight line is given by v = (6t - 3t²) m/s, where t is in seconds. If s = 0 when t =

qaws [65]

Answer

given,

v = (6 t - 3 t²) m/s

we know,

$v = \dfrac{dx}{dt}$

$a = \dfrac{dv}{dt}$

position of the particle

$dx = v dt$

integrating both side

$\int dx = (6t - 3 t^2)\int dt$

x = 3 t² - t³

Position of the particle at t= 3 s

x = 3 x 3² - 3³

x = 0 m

now, particle’s deceleration

$a = \dfrac{dv}{dt}$

$a = \dfrac{d}{dt}(6t - 3 t^2)$

a = 6 - 6 t

at t= 3 s

a = 6 - 6 x 3

a = -12 m/s²

distance traveled by the particle

x = 3 t² - t³

at t = 0 x = 0

t = 1 s , x = 3 (1)² - 1³ = 2 m

t = 2 s , x = 3(2)² - 2³ = 4 m

t = 3 s , x = 0 m

total distance traveled by the particle

D = distance in 0-1 s + distance in 1 -2 s + distance in 2 -3 s

D = 2 + 4 + 2 = 8 m

average speed of the particle

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8 0

3 years ago

Suppose you have two small pith balls that are 5.5 cm apart and have equal charges of -29 nc?

zysi [14]

The question is missing, however, I guess the problem is asking for the value of the force acting between the two balls.

The Coulomb force between the two balls is:
$F= k_e \frac{ q_1 q_2}{r^2}$
where $k_e=8.99\cdot10^9~N m^2 C^{-2}$ is the Coulomb's constant, $q_1=q_2=29~nC=29\cdot 10^{-9}~C$ is the intensity of the two charges, and $r=5.5~cm=0.055~m$ is the distance between them.

Substituting these numbers into the equation, we get
$F=2.5~10^{-3}~N$

The force is repulsive, because the charges have same sign and so they repel each other.

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3 years ago

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aivan3 [116]

Answer:

I would agree with your selection.

Explanation:

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3 years ago