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3 years ago

11

True or false the law of coservation of charge states that charge is neither created nor destroyed but transferred from one obje

ct to another

1 answer:

Hoochie [10]3 years ago

8 0

True, charge can not be created or destroyed, only transferred

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11. When an object is speeding up in the positive direction, what vs happering to its

Alina [70]

Answer:

im pretty sure its b

Note that when the acceleration is negative — on the interval [0, 2) — that means that the velocity is decreasing. When the acceleration is positive — on the interval (2, 4] — the velocity is increasing. Speeding up and slowing down.

4 0

3 years ago

An effort of 200 N is used to lift a load of 800 N by using a lever. If the load is at a distance of 40 cm from the fulcrum then

Alchen [17]

The effort distance will be 160 cm.Applying the moment at the center as follows will provide the effort distance:

<h3 /><h3>What is the mechanical advantage?</h3>

Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtain the efficiency of forces in levers and pulleys.

Given data;

Effort, $\rm F_e=00 N$

Load, $\rm P= 400 \ N$

Distance from the fulcrum, $\rm d=40 \ cm$

The effort distance is found by applying the moment at the center as;

$\rm F_e \times d= P \times d' \\\\ 200 \ N \times d'=800 \ N \times 40 \ cm \\\\ d'=160 \ cm$

Hence, the effort distance will be 160 cm

To learn more about the mechanical advantage refer to the link;

brainly.com/question/7638820

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7 0

2 years ago

Three ropes A, B and C are tied together in one single knot K. (See figure.)

noname [10]

The tension in the rope B is determined as 10.9 N.

<h3>Vertical angle of cable B</h3>

tanθ = (6 - 4)/(5 - 0)

tan θ = (2)/(5)

tan θ = 0.4

θ = arc tan(0.4) = 21.8 ⁰

<h3>Angle between B and C</h3>

θ = 21.8 ⁰ + 21.8 ⁰ = 43.6⁰

Apply cosine rule to determine the tension in rope B;

A² = B² + C² - 2BC(cos A)

B = C

A² = B² + B² - (2B²)(cos A)

A² = 2B² - 2B²(cos 43.6)

A² = 0.55B²

B² = A²/0.55

B² = 65.3/0.55

B² = 118.73

B = √(118.73)

B = 10.9 N

Thus, the tension in the rope B is determined as 10.9 N.

Learn more about tension here: brainly.com/question/24994188

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3 0

2 years ago

If I want to figure out the DISTANCE covered and I know the SPEED and TIME

Sergio [31]

Answer:

D=S(t) ................

6 0

3 years ago

According to coulombs law, what will happen to the force between two charged particles if the magnitude are increased by 6 times

seropon [69]

Answer: The electrostatic force will be the same

Explanation:

According to Coulomb's Law, when two electrically charged bodies come closer, appears a force that attracts or repels them, depending on the sign of the charges of this two bodies or particles.

In this sense, this law states the following:

"The electrostatic force $F_{E}$ between two point charges $q_{1}$ and $q_{2}$ is proportional to the product of the charges and inversely proportional to the square of the distance $d$ that separates them, and has the direction of the line that joins them"

$F_{E}= K\frac{q_{1}.q_{2}}{d^{2}}$ (1)

Being $K$ is a proportionality constant.

Now, if each $q_{1}$ and $q_{2}$ are increased by 6, and the distance between them as well, we will have the following:

$F_{E}= K\frac{6 q_{1}. 6 q_{2}}{(6d)^{2}}$ (2)

$F_{E}= 36 K\frac{q_{1}. q_{2}}{36d^{2}}$ (3)

Simplifying:

$F_{E}= K\frac{q_{1}.q_{2}}{d^{2}}$ (4)

Comparing (1) with (4) we can see the electrostatic force is the same.

4 0

4 years ago