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denis-greek [22]
3 years ago
10

Do you guys know how to find out the Wave Speed using frequency and wavelength?

Physics
1 answer:
Eduardwww [97]3 years ago
6 0
Given the relationship: v = wavelength times frequency

this should be as simple as multiplying it out :)

for any other variable just rearrange

velocity = lambda x frequency

where lambda is the wavelength

units:

m/s = m x Hz (1/s)
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A 20 ohm lamp and a 5 ohm lamp are connected in series and placed across a potential difference of 50 V.
iogann1982 [59]

Hi there!

1.

Since the two resistors are in series, we can simply add:
R_T = R_1 + R_2 + ... R_n

R_T = 20 + 5 = \boxed{25 \Omega}

2.

In series, the potential difference of each resistor (lamp) ADDS UP. We can begin by finding the current through the circuit using Ohm's law:
V = IR\\\\I = \frac{V}{R_T}

Plug in the values:
I = \frac{50}{25} = 2 A

Now,

we can use Ohm's law to find the individual voltage for each lamp.

20 Ohm lamp:
V = 2 * 20 = \boxed{40 V}

5 Ohm lamp:
V = 2 * 5 = \boxed{10 V}

3.

To solve, we can use the power equation.

P (\text{Watts})= IV

Plug in the values for each.

20 Ohm lamp:
P = 2 * 40 = \boxed{80 W}

5 Ohm lamp:
P = 2 * 10 = \boxed{100 W}

7 0
1 year ago
A student releases a marble from the top of a ramp. The marble increases speed while on the ramp then continues across the floor
Sergeu [11.5K]

Answer:

35.2941176 cm/s

Explanation:

round it if you need too

Distance divided by time.

7 0
3 years ago
Two different substances, Substance A and Substance B, are in direct contact with each other and are at different temperatures.
Alenkinab [10]

Answer:

resonance

Explanation:

The particles of substance B will cause the particle of substance A to vibrate at the same frequency

8 0
2 years ago
Read 2 more answers
Sinkholes can form when
kherson [118]
Land surfaces change, erosion happens, the ground collapses, etc.
7 0
3 years ago
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In outer space, a piece of rock continues moving at the same velocity for
Ray Of Light [21]

The absence of external force in the outer space, allows the piece of rock to continue moving at the same velocity for thousands of years.

<h3>Absence of external force on the outer space</h3>

The outer space is almost an absolute vacuum, because it's nearly empty. There is no matter such as air in the outer space that will provide an external force needed to change the velocity of the piece of rock.

From Newton's first law of motion, an object in a state of rest or uniform motion in a straight line, will continue in that state unless it is acted upon by an external force.

Thus, the absence of external force in the outer space, allows the piece of rock to continue moving at the same velocity for thousands of years.

Learn more about outer space here: brainly.com/question/24701339

7 0
2 years ago
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