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Degger [83]
4 years ago
8

Ocean waves are traveling to the east at 4.9 m/s with a distance of 23 m between crests. (b) With what frequency do the waves hi

t the front of a boat when the boat is moving westward at 1.1 m/s
Physics
1 answer:
ser-zykov [4K]4 years ago
6 0

Answer:

0.26086 Hz

Explanation:

solution:

The relative speed of the wave is:

v = 4.9+1.1 = 6 m/s

the frequency is:

f = v/λ

 = 6/23

 = 0.26086 Hz

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Convert gravitational potential energy to kinetic energy.
Digiron [165]

Answer:

1.7 J

Explanation:

The energy carried by a single photon is given by

E=hf

where h is the Planck's constant and f is the frequency of the photon.

The photon of our exercise has a frequency of f=1.7 \cdot 10^{17} Hz, therefore its energy is

E=hf=(6.63 \cdot 10^{-34}Js)(1.7 \cdot 10^{17} Hz)=1.1 \cdot 10^{-16} J

4 0
3 years ago
Which wave, A or B, has lower energy? A, because it has a higher amplitude B, because it has a higher amplitude A, because it ha
frutty [35]

Energy of wave depends on its amplitude and it is given as

E = \frac{1}{2} kA^2

here k = constant

A = amplitude

so energy will increase or decrease depends on the amplitude of the wave

So here if we need to check which wave has lower energy then we need to compare the amplitude.

If the amplitude is less then energy must be less

So please check in the figure that which wave out of A and B has lesser amplitude to find out the wave of lesser energy

5 0
3 years ago
Read 2 more answers
What is an example of a wheel and an axle
bija089 [108]
Door knob, rolling pin
4 0
3 years ago
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The water from a fire hose follows a path described by y equals 3.0 plus 0.8 x minus 0.40 x squared ​(units are in​ meters). If
ivanzaharov [21]

Explanation:

It is given that, the water from a fire hose follows a path described by equation :

y=3+0.8x-0.4x^2........(1)

The x component of constant velocity, v_x=5\ m/s

We need to find the resultant velocity at the point (2,3).

Let \dfrac{dx}{dt}=v_x and \dfrac{dy}{dt}=v_y

Differentiating equation (1) wrt t as,

\dfrac{dy}{dt}=0.8\times \dfrac{dx}{dt}-0.8x\times \dfrac{dx}{dt}

v_y=0.8\times v_x-0.8x\times v_x

v_y=0.8v_x(1-x)

When x = 2 and v_x=5\ m/s

So,

v_y=0.8\times 5\times (1-2)

v_y=-4\ m/s

Resultant velocity, v=\sqrt{v_x^2+v_y^2}

v=\sqrt{5^2+(-4)^2}

v = 6.4 m/s

So, the resultant velocity at point (2,3) is 6.4 m/s. Hence, this is the required solution.

8 0
3 years ago
Which state of matter is made up of particles that build repeating patterns such as the crystalline structure of sodium chloride
SCORPION-xisa [38]

B. solid

Explanation:

The solid state of matter is made up of particles that build repeating patterns. Solid is one of the four physical states of matter.

  • Matter is described as anything that has weight and occupies space.
  • The four states of matter are solid, liquid, gas and plasma.
  • Solid particles are known to be closely packed and held together by very strong attractive forces.
  • Solid like sodium chloride are said to be crystalline because they have crystals.
  • Crystals are ordered atomic structures formed by repeating units of the fundamental molecular units.
  • The repeating patterns of the crystals builds to form a solid.
  • Other states of matter do not posses the repeating crystalline structure of solids.

Learn more:

Crystalline brainly.com/question/6528456

#learnwithBrainly

7 0
3 years ago
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