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3 years ago

What variable does each of the symbols in the equation represent?

Physics

1 answer:

taurus [48]3 years ago

4 0

Answer:

Pls give the equation and for what is that equation for?

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Students create a standing wave

kenny6666 [7]

wavelength =wavevelocity

--——————

Frequency

Frequency = 1/T => 1 / 6.73 = 0.1486

Wave velocity = L/T => 3.75 / 6.73 = 0.5572

Therefore, wave length = 0.5572/0.1486 = 3.75m

3 0

3 years ago

One strategy in a snowball fight is to throw

Oxana [17]

second question: How many seconds after the first snowball

should you throw the second so that they

arrive on target at the same time?

Answer in units of s.

Answer:

Part 1: 28°

Part 2: 1.367

Explanation:

Part 1:

Given: 62°

Simple

θ = 90°- 62°

Part 2:

Y-direction

Δy $=v_{yo} t+\frac{1}{2} a_{y} t^{2}$

$0=[16.2sin(62)]t_{1}+1/2(-9.8)t_{1}^{2} \\$

$t_{1} =\frac{2[16.2sin(62)]}{9.8}$

$t_{1}=2.91913s$

$0=[16.2sin(28)]t_{2}+1/2(-9.8)t_{2}^{2}$

$t_{2} =\frac{2[16.2sin(28)]}{9.8}$

$t_{2}=1.55213s$

Δt $=t_{1}-t_{2}$

Δt $=2.91913-1.55213$

Hope it helps :)

7 0

4 years ago

4. A billiard ball rolls from rest down a smooth ramp that is 8.0 m long. The

Arisa [49]

Answer:

Explanation:

The formula S=(at^2)/2 will be used during the entire explanation.

1. 4 = (2t^2)/2

t = 2 s.

V = at = 2 * 2 = 4 m/s

2. 8 = (2t^2)/2

t = 2.8 s

iii. 2s

iv. 2.8 - 2 = 0.8s

Hope you understand)

8 0

3 years ago

Find the equivalent resistance, the current supplied by the battery and the current through each resistor when the specified res

VLD [36.1K]

Answer:

$R_{eq}$ = 19 Ω, I = 0.105 A, V1 = 1.05 V and V2 = 0.95 V

Explanation:

The correct way to solve this type of problem is to find the current or voltage values for the equivalent resistance and from here find the other values.

For a series circuit the equivalent resistance is the sum of the resistance

$R_{eq}$ = R1 + R2

$R_{eq}$ = 10 +9

$R_{eq}$ = 19 Ω

Let's use the equation for the voltage

V = I $R_{eq}$

I = V / $R_{eq}$

I = 2/19

I = 0.105 A

In a series circuit the current is constant, so let's use the voltage equation for each resistor

V1 = I R1

V1 = 0.105 10

V1 = 1.05 V

V2 = 0.105 9

V2 = 0.95 V

Note that the sum of this voltage is the total voltage applied.

6 0

3 years ago

A 17.3 eV electron has a 0.295 nm wavelength. If such electrons are passed through a double slit and have their first maximum at

4vir4ik [10]

Answer:

0.541 nm

Explanation:

The condition for maxima is,

$dsin\theta=m\lambda$

Here, m=0,1,2,.....

And d is the slit separation, m is the order of maxima, $\lambda$ is the wavelength.

Given that, the 17.3 eV electron posses a wavelength of

$\lambda=0.295 nm\\\\\lambda=0.295\times 10^{-9}m$

And the order of maxima is $m=1$ .

And the angle at which first order maxima occur is, $\theta=33^{\circ}$ .

Put these values in maxima condition while solving for d.

$d=\frac{1\times 0.295\times 10^{-9}m}{sin33^{\circ}} \\d=\frac{0.295\times 10^{-9}m}{0.545} \\d=0.541\times 10^{-9}m}\\d=0.541 nm$

Therefore, the slit separation is 0.541 nm.

7 0

3 years ago