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Sladkaya [172]
3 years ago
5

Why does wave height increase in shallow water??

Physics
1 answer:
Vitek1552 [10]3 years ago
3 0
As the water russhes toward the shore, it rises because it is pushing against it.<span />
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What kind of wave is a sound wave?
kicyunya [14]
A wave sound is a longitudinal <span>wave.
HOPE THIS HELPS :)

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4 0
3 years ago
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How much energy is transferred electrically by a 2000 W cooker in half an hour?
Kryger [21]

Responder:

E = 1440 kJ

Explicación:

Se da que,

La potencia de un horno de cocción es de 800 W

El voltaje al que se opera es de 230 V

Tiempo, t = 30 minutos = 1800 segundos

Necesitamos encontrar la energía eléctrica utilizada por el horno de cocción. El producto de la potencia y el tiempo es igual a la energía consumida. Entonces,

5 0
3 years ago
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A heat pump absorbs heat from the atmosphere at a rate of 30 kW. If work is being done to run this heat pump at a rate of 7.7 kW
Volgvan

Answer:

Option D 3.9

Explanation:

First, you need to use the correct equation which is the following:

COP = Q/W

Where:

Q = heat absorbed

W = work done by the pump

COP = coefficient of perfomance

We have all the data, so, all you need to do is replace in the above expression and you shoould get the correct result:

COP = 30 / 7.7

COP = 3.896

This result you can round it to 3.9. option D.

8 0
3 years ago
A 3-kg skateboard is rolling down the sidewalk at 4 m/s when it collides with a 1-kg skateboard that was initially at rest. If t
irga5000 [103]

Answer:

2 m/s

Explanation:

Parameters given:

Mass of first skateboard, m = 3 kg

Initial speed of first skateboard, u = 4 m/s

Mass of second skateboard, M = 1 kg

Initial speed of second skateboard, U = 0 m/s

Final speed of second skateboard, V = 6 m/s

Using the principle of the conservaton of momentum, the total initial momentum is equal to the total final momentum.

Momentum is the product of mass and velocity. This implies that:

m*u + M*U = m*v + M*V

(3*4) + (1*0) = (3*v) + (1*6)

12 + 0 = 3v + 6

=> 3v = 12 - 6

3v = 6

v = 6/3 = 2 m/s

The final speed of the 3 kg skateboard is 2 m/s

8 0
4 years ago
Read 2 more answers
He amount of current flowing in a circuit can be measured by
Papessa [141]

First question:
The magnitude of current flowing in a circuit is described in
units of Amperes.  The device used to measure it is an Ampmeter,
or Ammeter.

Second question:
This question is so absurd that it should not be dignified with an
answer.  Although 'E' is often used as the symbol for Electromotive
force, potential difference, and voltage, there's certainly no rule. 
Anyone is free to use  'M',  'Q',  'Θ', or  'Щ' to denote voltage when
they write electrical formulas, just as long as they make sure to
explain the meaning of whatever symbols they use.

7 0
4 years ago
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