Which of the following is an example if harmonic motion?

The reflecting wave flips upside-down on a stretched string when the wave moves from a less dense part of the rope moves toward a boundary that has a higher density. Hence the correct answer is (Option E).

A reflecting wave is a wave that abruptly changes its propagation direction when it hits the boundary between two media.

An echo is a real-world example of a reflecting wave.

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i hate you right now..... im gonna be thinking about this all day now....... ohhhhhhh no i need my 5 monsters now cause i aint sleepin now......

Answer:

a bicycle moving

Explanation:

due to the force that is applied towards the wheels of a bicycle and also gravitation the wheels. of a bicycle are therefore able to move

Answer:

Good human ears can detect sound from about 50 Hz to about 20,000Hz (20 kHz); this can be called the audible range of frequencies.

so c.50 hertz

Explanation:

Hope it helps :)

Answer:

50 hertz

Explanation:

This is right

Answer:

always accelerating

Explanation:

Answer:

B. Always accelerating

Explanation:

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The type of energy is stored in the barbell when it is held above the weightlifter's head is gravitational potential energy.

This is the type of energy possessed by an object due to its position above te ground level.

Potential energy of an object is given by the following formulas;

P.E = mgh

where;

Thus, the type of energy is stored in the barbell when it is held above the weightlifter's head is gravitational potential energy.

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The initial angular momentum of the propeller before the torque was applied will be 32 kg m²/s.

Torque is the force's twisting action about the axis of rotation. Torque is the term used to describe the instant of force. It is the rotational equivalent of force. Torque is a force that acts in a turn or twist.

The amount of torque is equal to force multiplied by the perpendicular distance between the point of application of force and the axis of rotation.

The given data in the problem is;

The rotational inertia is,I  = 2.0 kg m²

The clockwise torque is, T = 4.0Nm

The time period is,t= 4.0s,

The angular speed is,ω= 24 * (rad)/s

The initial angular momentum of the propeller is,I₀

The angular acceleration is found by the relation;

[tex]\rm \tau = I \times \alpha \\\\ \alpha =\frac{\tau}{i} \\\\ \alpha =\frac{4.0}{2.0} \\\\ \alpha= 2.0 \ rad/sec^2[/tex]

The initial angular velocity is found as;

[tex]\rm \omega_f = \omega_0 + \alpha t \\\\ \omega_0 = \omega_f -\alpha t \\\\ \omega_0 =24 -[(-2.0)\times 4.0)] \\\\ \omega_0 = 16 \ rad/sec[/tex]

The initial angular momentum of the propeller is found as;

[tex]\rm L_0 = I \omega_0 \\\\ L_0 = 20 \times (1.6) \\\\ I_0 = -32 \ kgm^2/s[/tex]

Hence,the initial angular momentum will be 32 kg m²/s.

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Answer: 14 kg•m2/s

Explanation:

Trust me it’s from khan

The climate change can directly impact the formation of hurricanes because increasing temperature increases intensity of hurricanes.

Evaporation increases as temperatures rise which also causes the transfer of heat from the oceans to the atmosphere. As the storms travel across oceans whose water is warm, they absorb more water vapor and heat which increases rainfall as well as intensity of hurricanes.

So we can conclude that the climate change impacted the formation of hurricanes due to increasing temperature that increases intensity of hurricanes.

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Answer:

amount and speed of traffic on the acceleration lane and expressway.

Answer:

W = 1/2 x P x E

Explanation:

Let :

Formula

Solving

Let's see

[tex]\\ \rm\rightarrowtail W=P\vec{E}(cos\theta_i-cos\theta_f)[/tex][tex]\\ \rm\rightarrowtail W=P\vec{E}(cos0-cos60)[/tex]

[tex]\\ \rm\rightarrowtail W=P\vec{E}(1-1/2)[/tex]

[tex]\\ \rm\rightarrowtail W=\dfrac{P\vec{E}}{2}[/tex]

Explanation:

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Answer:

The answer should be light or other electromagnetic radiation

Explanation:

Such as x-rays or other things like that.

-Hope This Helps!

-Justin:)

Answer:

All of the current flows through the short circuit branch and Bypasses the other branches. This causes the excessive amount of current to flow since there is practically no resistance. Short-circuit across the power supply can damage or destroy it.

Explanation:

Hope this helps you!

Answer:

Mining is the extraction of valuable minerals or other geological materials from the earth from an orebody, lode, vein, seam, or reef, which forms the mineralized package of economic interest to the miner. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, dimension stone, rock salt, potash, gravel, and clay.

Explanation:

Answer:

Three resources that are mined from earth's crust are:
-Coal
-Gold
-Iron ore

Some more are:
-Aluminum
-Copper
-Lime
-Phosphate rock
-Gypsum
-Sand
-Gravel
-Rock
etc.

Explanation:

Have a great rest of your day
#TheWizzer

Answer:

C

Explanation:

watt = j/sec     and work  = j    

so multiply   watt * sec to get  work

1000 j/sec  *  5 sec = 5000 j  = 5 x 10^3

The block that is sitting motionless on top of a wall contains potential energy.

Energy is the ability to do work. There are several forms of energy. For the block that is sitting motionless on top of a wall, the block contains potential energy.

The potential energy is the block is used to do work when the block falls. The block can break a piece of glass on the floor due to the energy that it contains.

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The light oscillates electrons which then absorbs some of the energy and reemit it thereby causing a delay.

This is defined as a subatomic particle which has a negative charge. In the glass of water the light oscillates the electrons which absorbs some energy.

The re-emission is what slows light when it passes from air into glass or water.

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Answer:

The correct answer is C

Explanation:

Hope this helped :)

if im wrong pls tell me.

→ Mass is measured in(unit)

→ The tool which is commonly used

nd many more......

[tex]\sf{\:мѕнαcкεя\: ♪...}[/tex]

Answer:

→ Mass is measured in(unit)

kilogram (kg) nd

smaller mass in gram(g)

→ The tool which is commonly used

triple beam balance

electronic balance

weighing machine

Explanation:

Answer:

D.

Explanation:

The answer should be D. because if it increases by a factor of 2 then it will decrease at a factor of 4.

I hope it helps! Have a great day!

Anygays-

Answer:

See below ↓↓

Explanation:

Formula

Force

Case (i) : Maximum Pressure

Case (ii) : Minimum Pressure

Answer:

It is when the focus of the ellipse that is closer to the point where Mars is moving the fastest.

Explanation:

I hope it helps! Have a great day!

Anygays-

Answer:

F - M a      force exerted by scales on student

M a = M (9.8 + 4.9) m/s^2      upwards chosen as positive

a = 1.5 g        net acceleration of student  due to force of scales

W =M g       weight of student   (actual weight)

Wapp = M 1.5 * g      apparent weight (on scales) of student

In an elevator which is accelerating upwards with 4.9 m/[tex]s^{-2}[/tex], Mike's weight will be 1.5 times the actual weight.

Hence, the apparent weight will be 1.5 times the real weight.

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Answer:

S = v0 t + 1/2 a t^2       a = 0 seems given in the problem

Vp  t = Vr t + 16

both travel for time t but the police car is going faster and travels 16 km farther

t (Vp - Vr) = 16

t = 16 km / (100 - 80) km/hr

t = 16 / 20 hr = 4/5 hr = 48 min

Answer: I think it is C.

Explanation: In an inelastic collision, the object hits the item and stays with it. Therefore, both momentum and kinetic energy need to be presen.t

Answer:

The Electric Force on Negative Charge is 2.968 N

Explanation:

charge on each corner, q = 2.38 micro coulomb

Side of square, a = 75.2 cm

Coulombic constant, K = 8.98755 x 10^9 Nm²/C²

sides of the square are A,B,C and D

and all sides of a square are equal so

AB = BC = CD = DA = 75.2 cm = 0.752 m

Diagonal, AC = BD = 1.414 x 0.752 = 1.06 m

Electric field at D due to charge at A

EA= Kq÷AB^2

= 8.98755×10^9 × 9.87×10^-6 ÷ 0.752^2

EA= 156863.82 N/C

Similarly Electric field at D due to charge C

EC=Kq÷CD^2

= 8.98755×10^9 ×9.87×10^-6 ÷ 0.752^2

EC= 156863.82 N/C

Electric field at D due to charge at BB

EB=Kq÷BD^2

EB=8.98755×10^9 × 9.87×10^-6 ÷ 1.06^2

EB=78949.01 N/C

Resolve the compoents

Ex = EA + EB cos 45

Ex = 156863.82 + 78949.01 x 0.707

Ex = 212689.2 N/C

Ey = EC + EB Sin 45

Ey = 156863.82 + 78949.01 x 0.707

Ey = 212689.2 N/C

The resultant electric field is

E = 1.414 x 212689.2 = 300787.95 N/C

the electric force on the negative charge is

F = q x E

F = 9.87 x 10^-6 x 300787.95

F = 2.968 N

Answer:

they might adapt or move to a new place

Explanation:

Answer:

Define the problem . what's exactly going on ?

- set some goals

- examine the consequences

- put your solution into practice

- brainstorm possible solutions

- Team working

Explanation:

ANY PROBLEM RELATED TO MANI CUSTOMER BILLING ACCOUNTING IN BOOKKEEPING ETC

NING A WAY TO MAKE THE COMPANY MORE PRODUCTS FIDABLE THROUGH NEW SERVICE OR PRODUCT OFFERING NEW PRICING IDEA PROMOTING AND SALES IDEA

Answer:

Look below.

Explanation:

1.) The resistance of a light bulb filament is effected by both length and cross-sectional area. Thicker wires have less resistance. A 120-Watt bulb has a greater current and a smaller resistance. Thus, a 120-Watt bulb must have a thicker filament than a 60-Watt bulb (assuming the lengths of the filaments are identical). We also think of lightbulbs in terms of their power ratings in watts. Let us compare a 25-W bulb with a 60-W bulb. Since both operate on the same voltage, the 60-W bulb must draw more current to have a greater power rating. Thus the 60-W bulb’s resistance must be lower than that of a 25-W bulb. If we increase voltage, we also increase power. For example, when a 25-W bulb that is designed to operate on 120 V is connected to 240 V, it briefly glows very brightly and then burns out. Precisely how are voltage, current, and resistance related to electric power?

2.) Energy transferred = 120 × 2 = 240 J. This equation can be rearranged to V = E ÷ Q. So voltage is energy transferred divided by charge.

3.) Power= Voltage × Current

4.) W=Pt