Use the drop-down menu to answer the question. which sound wave-object interaction is used by animals in echolocation?

Answer:

dk

Explanation:

Answer:

In this case the board is moving towards the observer so the board will receive the frequency as a moving observer

The board then emits the sound received and becomes a moving source according to the driver in the ambulance

f' = f (V + Vo) / V     where V is the speed of sound and f' is the frequency received by the moving board

Now the board becomes a moving source and

f' = f (V / (V - Vs)       and V is again the speed of sound

Combining these equations we get

f = (V + Vo) / (V - Vs) = 700 (350 + 4) / (350 - 4) = 716 / s

The driver would hear 16 beats / sec

Note: one can do these separately

f' = 700 * (350 + 4)  / 350  = 708  frequency received for moving observer

f' = 708 * 350 / (350 - 4) = 716 / sec   moving source stationary observer

Every 5 sec one would hear 5 * 16 = 80 beats

All of the above

As it's given that

Means the plane it's perpendicular to it xy plane.

Hence all are correct

Answer:

Explanation:

It is given that the electric is uniform in the z-direction.

Therefore,

The tension in the string at the 60-cm mark will be 0.9 N.The tension force is applied along the whole length of the wire, pulling energy equally on both ends.

The tension force is described as the force transferred through a rope, string, or wire as it is pulled by opposing forces.

The given data in the problem is;

The length of  the stick is, L= 1.20 m =120 cm

T is the tension in the string at the 60-cm mark;

T₁ is the tension at the 20-cm mark

From the torque equilibrium law;

[tex]\rm mg(30)-T_2(40)+T_2 (40) =0 \\\\\ T_1(0)=mg (30)\\\\\ T_2(40)=1.2 (30) \\\\ T_2= 0.9 \ N[/tex]

Hence the tension in the string at the 60-cm mark will be 0.9 N.

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Answer:

has free electrons

Explanation:

A conductor has free electrons while an insulator does not. Free electrons are electrons which are not bounded tightly to their parent atoms, and are free to move given the right conditions (ie. a strong EM field).

Answer:

Explanation:

Part A

Resistances in Series Add

Rt = R1 + R2

Rt = 33 + 22

Rt = 55 ohms

Part B

Current is found by using ohms law

I = E/R

E = 120 volts

R = 55 ohms

I = 120/55

I = 2.18

Part C

E = I * R

E = ?

I = 2.18

R = 22 ohms

E = I * R

E = 2.18 * 22

E = 48 volts when I is not rounded in Part B

E = I * R

E = ?

I = 2.1818...

R = 33

E = 2.181818... * 33

E = 72 when the repeating decimal is allowed to repeat.

Part D

The total voltage drop across both resistors adds

E = 72 + 48

E = 120 Volts

Answer:

5 Newton to right direction

Explanation:

5N to the right will be vanishes with 5N to the left..... then the another 5N to right will be the force that move the box

Answer:

They are very distant.

Explanation:

With relativistic red shifts that take into account dilation of space-time, as Einstein predicted.

Answer:

10V

Explanation:

Hollow sphere means two spherical surfaces inside

So charge on the surface =Charge at any point in sphere i.e voltage remains constant.

So

potential at centre=Potential at surface=10V

Option B is correct

Answer:

a state in which opposing forces or influences are balanced.

Explanation:

Answer: A state of balance between two forces

Explanation: hope this helps!

The quantities that can be measured from the disk-shaped platform include mass, radius for moment of inertia, and rotational frequency for omega.

It should be noted that inertia simply means the property of all matter by which they tend to remain in constant and uniform motion unless they're acted by an external force.

In this case, the quantities that can be measured from the disk-shaped platform include mass, radius for moment of inertia, and rotational frequency for omega.

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Asteroids are made up of metals and rocky material, while comets are made up of ice, dust and rocky material. Both asteroids and comets were formed early in the history of the solar system about 4.5 billion years ago.

Answer:

v1-v2    is motion of m2 relative to m1     v2-v1 is motion of m1 relative to m2

Explanation:

Answer:

this may not be what you're looking for but here you go

Explanation:

A horizontal line means the object is not changing its position - it is not moving, it is at rest. A downward sloping line means the object is returning to the start. Speed-Time graphs are also called Velocity Time graphs. Speed-Time graphs look much like Distance-Time graphs.

For a radio station broadcasts at a frequency of 83.8 MHz with a power of 16.5 kW, the number of photons is mathematically given as

P=6.92*10^{29}photon/sec

Generally, the equation for the energy   is mathematically given as

E=hf

Therefore

E=6.63*10^{34}*83*10^6

E=5.561*10^26J

In conclusion, the number of photons

P=dN/dt

P=38500/5.561*10^{26}

P=6.92*10^{29}photon/sec

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The harmonic frequency is the frequency of the harmonic motion. Whereas the resonance frequency is the frequency at which the oscillation achieves its highest point.

Mechanical systems and charged particles all have a frequency that they vibrate at. this frequency is referred to as the resonance frequency or natural frequency.

When the matching vibrations of another item enhance the amplitude of an object's oscillations, this is known as resonance.

A harmonic is a wave with a frequency that is a positive integer multiple of the original wave's frequency.

Whereas the resonance frequency is the frequency at which the oscillation achieves its highest point.

The fundamental frequency is the lowest resonant frequency, while the overtones are the higher resonant frequencies. Harmonics are all resonant frequencies that are multiples of the fundamental.

Hence we may deduce that harmonics and resonance frequency have a direct relationship.

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Answer:

electrical 'pressure' measurement

Explanation:

Answer:

[tex]194.44kw[/tex]

Explanation:

[tex]power = \frac{workdone}{time \: taken} [/tex]

[tex] p = \frac{8750000}{45} [/tex]

[tex]p = 194444.44watt[/tex]

[tex]p = 194.44kw[/tex]

Answer:

I think the answer would be B

Explanation:

Hope this helps:)...if it's wrong I'm sorry for wasting your time and may God bless you:)

Standing waves is the perfect answer for this

A kinetic friction simply means the force that is in the opposite direction to the body's movement.

Your information is incomplete. Therefore, an overview of kinetic friction will be given. Kinetic friction simply means an inhibitory force that's present when an object begins to move.

In this case, a kinetic friction simply means the force that is in the opposite direction to the body's movement that slides with respect to the surface.

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Answer:

the same    588 N

Explanation:

Answer:

Speed= 10meters per second, Frequency = 4hz

Explanation:

First we need to find the frequency of the wave. The formula for frequency is: f (frequency) = 1 / T (period). This means we need to convert the period into seconds and then use it as a denominator with one on the numerator.

Since the period is 0.25,

1/0.25= 4hz

Now, we just need to multiply the frequency with the wavelength

4hzx2.5= 10

= 10 meters per second

Answer:

10 m^3 /s

Explanation:

1 m  X  2 m  X  5 m /s = 10 m^3/s

Answer:

See below

Explanation:

Find the NET forces on the objects

A  20==>

B    0

C  30==>

D  15==>    

So biggest accel = C because it has the most force acting on it

 next is A because it has the next biggest force

    next is  D        then    B ...B has no net force acting on it  

Answer:

1. False

Corrected statement: The body at terminal velocity will have equal weight to the drag force.

2. True

3. False

Corrected Statement: The force that accelerated a falling body is the force of gravity.

Explanation:

1. This statement is false. Terminal velocity occurs when the magnitude of the drag force is equal to the magnitude of the force of gravity. This causes zero net force, meaning zero accleration and the object is at its maximim (terminal) velocity.

2. True - if a body is in stable equilibrium, the line of grvaity must be within the base of support.

3. A falling body towards the center of a planet is caused by the force of gravity.

Answer:

Its 57.723 billion meters but D is the closest to that.

Following are the ways that Venus does not follow the patterns of the other inner planets because Venus lacks life and water oceans, like does Earth.

Mercury, Mars , Earth,and Venus  and  are known as inner planets because their surfaces are compact and rocky, similar to Earth's terra firma.

Venus and the other inner planet are pretty different as well. Following are the ways that Venus does not follow the patterns of the other inner planets are;

1. Venus has an atmosphere that is nearly 100 times thicker than Celestial bodies with extremely heated surface temperatures.

2. Venus lacks life and water oceans, like does Earth.

3. In comparison to Earth and the other planets, the Venus rotates backwards.

Hence,  Venus does not follow the patterns of the other inner planets.

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Answer:

✓ Ion

Explanation:

Which term BEST describes the form of beryllium shown? Protons=4 Neutrons=5 Electrons=2

✓ Ion