A wave has a period of n seconds. What is the frequency of this wave?

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Answer:

it is a magnetic field

Explanation:

Current

Hope this helps!

The index of refraction of this liquid will be 1.28. It is found as the ratio of the sin of the angle of incidence and the angle of reflection.

The refractive index of a substance is a dimensionless quantity that specifies how quickly light passes through it in optics.

The given data in the problem is;

Angle of incidence (i)= 65°

Angle of refraction(r) = 42°

The formula for the index of refraction is;

[tex]\rm n = \frac{sin \ i }{sin \ r} \\\\ \rm n = \frac{sin 65 ^0}{sin 42^0} \\\\ n=1.28[/tex]

Hence, the index of refraction of this liquid will be 1.28.

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Answer:

electrical 'pressure' measurement

Explanation:

Answer:

1kg

Explanation:

Use the formula

F=ma

m=F/a

m=2N/2m/s^2

m=1kg

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:

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

Answer:

1/3 amp

Explanation:

V = IR

V/R = I

120 / 360 = 1/3 amp

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:

dk

Explanation:

Answer:

the same    588 N

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]

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:

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

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).

For someone who claims that based on temperature measurements, the temperature of fluid rises during a throttling process,  this assertion is true since no thermodynamic rules are broken.

Generally, Thermodynamics is simply defined as a field of science that is responsible for the relationship between heat and other types of energy.

In conclusion, The temperature of the fluid fluctuates or stays the same during the throttling process.

As a result, this assertion is true since no thermodynamic rules are broken.

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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.

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:

a state in which opposing forces or influences are balanced.

Explanation:

Answer: A state of balance between two forces

Explanation: hope this helps!

Answer:

10 m^3 /s

Explanation:

1 m  X  2 m  X  5 m /s = 10 m^3/s

Answer:

Heat flows from the reactor to the water

Explanation:

Good luck! :)

Answer:

✓ Ion

Explanation:

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

✓ Ion

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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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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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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Answer:

dd=4.3 ly=4.3 •9.46•10°15 m=4.1 10°16m.

Explanation:

Answer:

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

Explanation:

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:)