The response that enumerates the unbalanced forces is a bunch of people playing tug-of-war with two young children on one side and two huge adults on the other.
Is the force used in tug of war balanced or unbalanced?In a tug of war, if both teams are applying the same amount of force on the rope, balanced forces are displayed. The forces pulling on the rope are opposing in direction and of equal magnitude.
What's an illustration of an imbalanced force?The imbalanced soldiers are acting onto the football if you kick it and it goes from one area to another. After being kicked, the ball goes from one location to another. An illustration of an uneven force is this.
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The three small spheres shown in the figure (Figure 1)carry charges q1= 4.45 nC , q2=-7.50 nC , and q3= 2.15 nC
A)Find the net electric flux through the closed surface S1
shown in cross section in the figure.
B)Find the net electric flux through the closed surface S2
shown in cross section in the figure.
C)Find the net electric flux through the closed surface S3
shown in cross section in the figure.
D)Find the net electric flux through the closed surface S4
shown in cross section in the figure.
E)Find the net electric flux through the closed surface S5
shown in cross section in the figure.
A) The net electric flux through the closed surface S₁ is given by the equation: Net electric flux = q1/4πε0
= 4.45 nC / (4π x 8.85 x 10-12 C2/Nm2)
= 0.541 x 10-3 Nm2/C .
Electricity is a form of energy that exists in nature and is created through the movement of electrons between atoms. It is the force that powers all of the electrical appliances and devices in our homes and offices.
B) The net electric flux through the closed surface S₂ is given by the equation:
Net electric flux = q1/4πε0 + q2/4πε0
= (4.45 nC + (-7.50 nC)) / (4π x 8.85 x 10-12 C2/Nm2)
= -2.05 x 10-3 Nm2/C
C) The net electric flux through the closed surface S₃ is given by the equation:
Net electric flux = q1/4πε0 + q2/4πε0 + q3/4πε0
= (4.45 nC + (-7.50 nC) + 2.15 nC) / (4π x 8.85 x 10-12 C2/Nm2)
= -0.239 x 10-3 Nm2/C
D) The net electric flux through the closed surface S₄ is given by the equation:
Net electric flux = q1/4πε0 + q2/4πε0 + q3/4πε0 + q1/4πε0
= (4.45 nC + (-7.50 nC) + 2.15 nC + 4.45 nC) / (4π x 8.85 x 10-12 C2/Nm2)
= 0.302 x 10-3 Nm2/C
E) The net electric flux through the closed surface S₅ is given by the equation:
Net electric flux = q1/4πε0 + q2/4πε0 + q3/4πε0 + q1/4πε0 + q2/4πε0
= (4.45 nC + (-7.50 nC) + 2.15 nC + 4.45 nC + (-7.50 nC)) / (4π x 8.85 x 10-12 C2/Nm2)
= -1.75 x 10-3 Nm2/C.
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A) The net electric flux through the closed surface S₁ is given by the equation: Net electric flux = q1/4πε0
= 4.45 nC / (4π x 8.85 x 10⁻¹² C²/Nm²)
= 0.541 x 10⁻³ Nm²/C .
What is electricity?Electricity is a form of energy that exists in nature and is created through the movement of electrons between atoms. It is the force that powers all of the electrical appliances and devices in our homes and offices.
B) The net electric flux through the closed surface S₂ is given by the equation:
Net electric flux = q1/4πε0 + q2/4πε0
= (4.45 nC + (-7.50 nC)) / (4π x 8.85 x 10⁻¹² C²/Nm²)
= -2.05 x 10⁻³ Nm²/C
C) The net electric flux through the closed surface S₃ is given by the equation:
Net electric flux = q1/4πε0 + q2/4πε0 + q3/4πε0
= (4.45 nC + (-7.50 nC) + 2.15 nC) / (4π x 8.85 x 10⁻¹² C²/Nm²)
= -0.239 x 10⁻³ Nm2/C
D) The net electric flux through the closed surface S₄ is given by the equation:
Net electric flux = q1/4πε0 + q2/4πε0 + q3/4πε0 + q1/4πε0
= (4.45 nC + (-7.50 nC) + 2.15 nC + 4.45 nC) / (4π x 8.85 x 10-12 C²/Nm²)
= 0.302 x 10⁻³ Nm²/C
E) The net electric flux through the closed surface S₅ is given by the equation:
Net electric flux = q1/4πε0 + q2/4πε0 + q3/4πε0 + q1/4πε0 + q2/4πε0
= (4.45 nC + (-7.50 nC) + 2.15 nC + 4.45 nC + (-7.50 nC)) / (4π x 8.85 x 10⁻¹² C²/Nm²)
= -1.75 x 10⁻³ Nm²/C.
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A body moving at 50m/s decelerates uniformly at 2/ms? until it comes to rest. What distance does it cover from the time it starts to decelerate to the time it comes to rest.
Answer:
625
Explanation:
To solve this problem, we can use the following kinematic equation:
v^2 = u^2 + 2as
Where:
v = final velocity (0 m/s since the body comes to rest)
u = initial velocity (50 m/s)
a = acceleration (-2 m/s^2 since the body is decelerating)
s = distance
We want to find the distance (s) that the body covers from the time it starts to decelerate to the time it comes to rest. We can rearrange the equation to solve for s:
s = (v^2 - u^2) / (2a)
Substituting the values we have:
s = (0^2 - 50^2) / (2 x (-2)) = 625 meters
Therefore, the body covers a distance of 625 meters from the time it starts to decelerate until it comes to rest.
Projectile Motion Practice Problems (horizontal and at an angle)
1. Josh kicks a soccer ball with a velocity of 15 m/s at an angle of 38° above the
horizontal.
a. What are the X and Y components of his velocity?
b. How long is the ball in the air?
c. How far will the ball go?
Answer:
Explanation:
a. The X and Y components of the velocity can be found using trigonometry:
X = V * cos(θ) = 15 m/s * cos(38°) ≈ 11.63 m/s
Y = V * sin(θ) = 15 m/s * sin(38°) ≈ 9.14 m/s
b. The time the ball is in the air can be found using the Y component of the velocity and the acceleration due to gravity:
Y = V * sin(θ) * t - (1/2) * g * t^2
where g = 9.8 m/s^2 is the acceleration due to gravity
Solving for t, we get:
t = 2 * Y / g ≈ 1.87 s
c. The distance the ball travels can be found using the X component of the velocity and the time in the air:
distance = X * time = 11.63 m/s * 1.87 s ≈ 21.78 m