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3 years ago

How can we determine the angle of a resultant vector

Physics

1 answer:

klasskru [66]3 years ago

8 0

The angle of a resultant vector is given by the equation $tan \theta = \frac{R_y}{R_x}$

Explanation:

When we compute the resultant vector starting from 2 (or more) vectord, we add the components along the x- and y- direction of the original vectors, in order to find the component of the resultant vector along the two directions.

Let's call:

$R_x$ the component of the resultant vector along the x-direction

$R_y$ the component of the resultant vector along the y-direction

The magnitude of the resultant vector is then given by Pythagorean's theorem:

$R=\sqrt{R_x^2+R_y^2}$

While the angle can be found by taking the arctangent of the ratio between the y-component and the x-component, mathematically:

$tan \theta = \frac{R_y}{R_x}$

Note that this angle is measured between the resultant vector and the positive direction of the x-axis.

Learn more about vector components:

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Alenkasestr [34]

Answer:

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Explanation:

The concept to solve this problem is given by Energy Transferred, the equation is given by,

$Q = mc\Delta T$

Where,

Q= Energy transferred

m = mass of water

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Replacing the values where mass is 50g and temperature is 80°C to 0°C we have,

$Q = mc\Delta T$

$Q = 50*0.11*(80-0)$

$Q = 440cal$

Then we can calculate the heat absorbed by m grams of ice at 0°C, then

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How Q_1=Q_2, so

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$m=\frac{440}{80}$

$m = 5.5g$

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3 years ago

If we were to illuminate them only with light from the Balmer transition considered above, would the solar panels produce a curr

Ugo [173]

Answer:

Explanation:

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2 years ago

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We also know the capacitance of a parallel-plate capacitor is given by:

C = κε₀A/d

C is the capacitance

κ is the capacitor's dielectric constant

ε₀ is the electric constant

A is the area of the plates

d is the plate separation

If we substitute C:

ΔV = Qd/(κε₀A)

We assume the stored charge and the area of the plates don't change. Then if we double the plate spacing, i.e. we double the value of d, then the potential difference ΔV is also doubled.

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Answer:

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Answer:

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