What is the effective resistance between the points A and D? A) 1.3 Ω B) 2.2 Ω C) 10 Ω D) 12 Ω

Answer: Thermal and Elastic

Explanation:

Answer:

thermal and gravitational potential

Explanation:

because

when we gives thermal energy then

its energy is change into kinetic energy

and

any object goes up then its kinetic energy change into gravitational potential energy

This sounds like thermal expansion.

Answer:

D. Any mirror

Explanation:

The main difference between mirrors and lenses is the following:

- Mirrors work based on the principle of reflection: reflection occurs when a light ray hits a surface and it bounces back in the same medium changing direction, withouth crossing the interface between the two mediums. In this case, the speed of the light ray does not change, since it depends only on the refractive index of the medium, n:

[tex]v=\frac{c}{n}[/tex]

where c is the speed of light in vacuum: and since the light ray is reflected into the same medium, n does not change, so the speed does not change.

- Lenses work based on the principle of refraction: refraction occurs when a light ray crosses the interface between two mediums, changing direction. However, in this case the speed of the ray also changes: in fact, the ray is now in a different medium, so according to the equation

[tex]v=\frac{c}{n}[/tex]

the speed of the light ray has also changed.

Therefore, the correct answer is

D. Any mirror

Answer:

D. any lens - a p e x

Answer:

B. X-rays!

Explanation:

The answer would be A because sound waves and electomagnetic waves carry energy and they can both refract.

Answer: A. Both waves carry energy and refract.

Explanation: Rarefaction is where vibrating particles are spread apart.

Answer:

C. Money to pay off other debts and interest

Money to pay off other debts and interest are usually considered wise and justified.

Answer:Option c

Explanation:

Personal loans give persons an access to funds that can be used as their wish and they are unsecured. This means that they do not need you to put down collateral for obtaining the loan.  

A personal loan usually has higher rate of interests than that of secured loan. They offer lower rate of interest than credit cards. It is advisable to use personal loans to pay off debts form credit cards will support you in saving interests and help you to get out of the debt faster period of time.

Vo = 30 m/s Vf = 26 m/s, t = 20ms = 0.02s

A = Vo + Vf / t

A = 30 + 26 / 0.02

A = 56 /0.02

A = 2800 m/s^2

The  average acceleration of the racket is 2,800 m/s²

The given parameters include;

initial speed of the racket, u = 30 m/s

recoil velocity of the racket, v = 26 m/s

time of collision, t = 20 m/s

To find:

Let the backward or recoil velocity be in negative direction

The average acceleration of the racket is calculated as;

[tex]average \ acceleration \ =\frac{\Delta \ velocity}{\Delta \ time} = \frac{v - u}{t} \\\\average \ acceleration \ = \frac{-26 - 30}{20 \times 10^{-3}}= \frac{-56}{20 \times 10^{-3}} = -2,8 00\ m/s^2\\\\magnitude \ of \ average \ acceleration = 2,800 \ m/s^2[/tex]

Thus, the  average acceleration of the racket is 2,800 m/s²

Learn more here: https://brainly.com/question/15270488

Answer:

10 N, [tex]53.1^{\circ}[/tex] north-east

Explanation:

The two forces applied on the object are perpendicular to each other, so we can find the magnitude of their resultant by using the Pythagorean theorem:

[tex]R=\sqrt{(6 N)^2 + (8 N)^2}=10 N[/tex]

The direction of the force instead is given by

[tex]\theta = tan^{-1} (\frac{F_n}{F_e})[/tex]

where F_n is the force pointing north, and F_e is the force pointing east, and the angle is measured with respect to the east direction. Substituting,

[tex]\theta=tan^{-1} (\frac{8 N}{6 N})=tan^{-1} (1.333)=53.1^{\circ}[/tex]

Answer: the answer would be X

Explanation:

Answer:

X

Explanation:

The energy possessed by the position of the body is called gravitational energy. The formula for the gravitational potential energy is given by

U = m x g x h

Gravitational Potential energy of W:

m x g x h = m x 1.6 x 32 = 51.2 m

Gravitational Potential energy of X:

m x g x h = m x 3.7 x 16 = 59.2 m

Gravitational Potential energy of Y:

m x g x h = m x 1.6 x 35 = 56 m

Gravitational Potential energy of Z:

m x g x h = m x 3.7 x 12 = 44.4 m

The gravitational potential energy is maximum for X

Answer:

The flow of photons

Explanation:

Final answer:

The flow of water in the Water Wheel simulation represents the flow of electrons, similar to how electrons flow through a circuit.

Explanation:

The flow of water in the Water Wheel simulation represents the flow of electrons. Just like water flowing through a system, electrons can flow through a circuit, powering devices and creating electric current. Changing the flow of water in the simulation is similar to adjusting the flow of electrons in a circuit by changing the voltage or resistance.

Yes indeed, that is a true statement.  Truer words are seldom written, and I could not agree with you more.

In case you are asking a question, I can kind of see how this might be a question if there is a blank after "... the change in ..." that is to be filled with one or more new words.

If that is the situation, then the blank can be filled with "frequency or wavelength" .

The Doppler effect is the change in the wavelength (or frequency) of energy in the form of a wave due to the motion of the source and/or receiver.

                                             f’ = f (c + vr) / (c + vs)

where,

To know more about the Doppler effect, refer to:

https://brainly.com/question/3826119

#SPJ2

Answer:

Allows current to flow in one direction.

Explanation:

Answer:Diodes can be used as rectifiers, signal limiters, voltage regulators, switches, signal modulators, signal mixers, signal demodulators, and oscillators. The fundamental property of a diode is its tendency to conduct electric current in only one direction.

Explanation:

Answer:

Explanation:

Depends on what you are measuring.

For example, in Chemistry, KE is measuring temperature. Temperature is the average of all the molecules present and their motion (using a gas as our base).

In physics, KE at beginning levels, is the speed of a moving object.

Answer:

Oi, mate its false

Explanation:

because if an leaf floats down from a tree it is not considered an object for a free-fall

Answer:

False

Explanation:

Answer: A lizard :)

Explanation:Frogs lay there eggs in the water for example a underwater stick. Newts also lay there eggs underwater or in a underwater enviroment. And catfishes also lay they eggs under water. Where i live (Florida) there are millions of lizards and sometimes i find them on the ground or on land. I also did some research and its a fact that lizerds do in fact lay there eggs on the ground.

I really hope this helps have a great rest of your day :) :) :) :) :)

The answer is:

The heat absorbed by the iron skillet is equal to 473 Joules.

To solve the problem, we need to use the formula to calculate the quantity of heat absorbed, also, we need to remember that specific heat of the iron, which is equal to:

[tex]s=\frac{0.45J}{g*\°C }[/tex]

Where,

J, is the energy transferred.

g, is the mass of the object or substance.

°C, is the temperature measured in Celsius degrees.

We can calculate the heat absorbed using the following equation:

[tex]q=m*dT*s[/tex]

Where,

q, is the heat absorbed

m, is the mass of the object

dT, is the change in temperature

s, is the specific heat of the substance.

We are given the following information:

[tex]mass=70g\\dT=28\°C-13\°C=15\°C\\s=\frac{0.45J}{g*\°C }[/tex]

So, substituting and calculating, we have:

[tex]q=m*dT*s[/tex]

[tex]q=70g*15\°C*\frac{0.45J}{g*\°C }=472.5J=473J[/tex]

Hence, the heat absorbed is equal to 473 Joules.

Have a nice day!

Answer:on apex the correct answer is true

Explanation:

Answer:

[tex]1.16\cdot 10^{-7} N[/tex]

Explanation:

The force of gravity between two objects is given by:

[tex]F=G\frac{m_1 m_2}{r^2}[/tex]

where

G is the gravitational constant

m1, m2 are the masses of the two objects

r is their separation

In this problem, we have

m1 = m2 = 1170 kg is the mass of each car

r = 28 m is their separation

Substituting,

[tex]F=(6.67\cdot 10^{-11} )\frac{(1170 kg)^2}{(28 m)^2}=1.16\cdot 10^{-7} N[/tex]

Force is the product of mass and acceleration. The Force between the two-car is 1.1646 x 10⁻⁷ N.

Force can be defined as an influence that can change the motion of an object. It can be given by the formula,

F = m x a

Given to us

Masses of the car, m = 1170 kg

Distance between the car, d = 28 m

We know that according to the force of gravity,

[tex]F = G\dfrac{m_1m_2}{d^2}[/tex]

G = gravitational constant (6.67 × 10⁻¹¹ N·m²/kg²),

m₁ = mass of object 1

m₂ = the mass of object 2

d = distance between two objects

Substitute the values,

[tex]F = (6.67 \times 10^{-11})\dfrac{1170 \times 1170}{28^2}\\\\F = 1.1646 \times 10^{-7}\ N[/tex]

Hence, the Force between the two-car is 1.1646 x 10⁻⁷ N.

Learn more about Force:

https://brainly.com/question/26115859

Answer:

Explanation:

I can give you four for certain.

Copper

Gold

Silver

Aluminum

the upward force the desk pushes on the book.

from the free body diagram of the book, it is clear that on the book, there are two forces acting.

1) normal force F by the desk in Upward direction.

2) force of gravity by earth in downward direction.

The Upward normal force by the desk on the book balances the force of gravity by earth in downward direction. that is why the book remains stationary on the desk.

The normal force acting on the book is a supporting force that is equal in magnitude and opposite in direction to the book's weight, keeping it in static equilibrium.

A book is sitting on a desk, and the best description of the normal force acting on the book is that it is a supporting force exerted by the desk that is perpendicular to and away from the surface. This force is necessary to support the weight of the book, counteracting the force of gravity and preventing the book from accelerating downwards. Newton's third law of motion tells us that this normal force is equal in magnitude and opposite in direction to the force that the book exerts on the desk, which is its weight due to gravity. In this instance, if the desk exerts an upward force of 32 N, this is because the book's weight (force due to gravity) is also 32 N, resulting in a state of static equilibrium where the net external force on the book is zero.

Seawalls, groins, jetties and other shoreline stabilization structures have had tremendous impacts on our nation's beaches. Shoreline structures are built to alter the effects of ocean waves, currents and sand movement. They are usually built to "protect" buildings that were built on a beach that is losing sand.

Answer:

Seawalls are made for coastal defense purposes

Explanation:

Seawalls are massive structures which are designed  to prevent coastal erosion and other damages due to wave action during huge storms such as hurricanes.

My family used to live near one. It are very satisfying to watch during rain storms, because you can hear the sound of the rain falling on top of it. I also loved watching the waves hit the sea wall then roll back down.

Hope this helps. ( Sorry I go a little carried off)

Answer:

I believe it is true.

Explanation:

Hope my answer has helped you!

Hello There!

This is "True"

For a stationary observer, when the source of sound is moving, its pitch appears to change.

Answer:

 B. is the right answer

A) True. protons and neutrons have almost the same mass.

B) Not true. Booo !  protons and neutrons have the same charge.  

C) True.  unlike protons and electrons neutrons have no charge.  

D) True.  protons and electrons have opposite charges.

Answer:

B. An engine does 100 joules of work in 2 seconds.

Explanation: I hope u get it right.

Answer: A king

Explanation: A king has a everything  he needs to live as long as he lives

Answer: B

f=c/wavelength

So we see if the wavelength is larger then the frequency gets smaller and the smaller the wavelength the higher the frequency.

Any questions feel free to ask. Thanks

Final answer:

Glen's correct explanation is that if a wave has a long wavelength, it will have a low frequency, showing the inverse relationship between frequency and wavelength for electromagnetic waves.

Explanation:

Glen is explaining the relationship between the wavelength and frequency of electromagnetic radiation to his friend, Harold. The correct explanation of this relationship is embodied in option B: If a wave has a long wavelength, it will have a low frequency. This principle is underpinned by the universal speed of light (c), at which all electromagnetic waves travel. The relationship among these characteristics can be represented by the equation c = fλ, where c is the speed of light, f is the frequency, and λ is the wavelength. Thus, for all electromagnetic waves, a greater frequency implies a smaller wavelength and vice versa, demonstrating an inverse relationship between these two properties.

Answer:

139 N

Explanation:

Thats the answer on e2020

The significance of the force of hysteria force inside the path of 98 N2 is 139 N.

SOLUTION:

given force = 98 N

   the angle of pulling = 22 °

       force = 98 cos22°

                   = 139 N

The importance of the pressure is the variety that represents the energy of the pressure. for instance: think the force is = 10 N closer to the east. 'towards east' shows the path at the same time as '10' is the importance of the pressure. So basically, magnitude is the 'value' or 'amount' of any bodily amount.

The bodily force exerted on an item. The force implemented is perpendicular to the surface of gadgets in line with unit area. The simple formula for stress is . Unit of stress is Pascals (Pa).

A simple instance of strain can be visible via preserving a knife to a bit of fruit. if you hold the flat part of the knife against the fruit, it won't cut the floor. The pressure is spread out of a huge place.

The frenzy or pull on an item with mass that causes it to alternate its pace. Force is an outside agent able to change the state of relaxation or movement of a particular frame.

Learn more about force here: https://brainly.com/question/25239010

#SPJ2

Answer:

Infrared

Explanation:

This is the electromagnetic spectrum just above the visible light spectrum with higher energy (and higher frequency). This electromagnetic radiation is responsible for feeling the heat when you place your hand close to the side of a fire. It is also harnessed in night vision where bodies that emit some form of heat are visible due to their emission of IR.

Heat transfer by radiation primarily depends on the surface area, the fourth power of the absolute temperature, and the emissivity of the object. This is dictated by the Stefan-Boltzmann law of radiation. All objects based on their temperature difference with the surrounding environment absorb and emit radiation leading to heat transfer.

Heat transfer by radiation depends on several factors. The primary ones are the surface area of the object, the fourth power of the absolute temperature, and the emissivity of the object. This can be represented by the equation from the Stefan-Boltzmann law of radiation: = oеAT4, where o is the Stefan-Boltzmann constant, A is the surface area of the object, T is the absolute temperature and e is the emissivity.

All objects release and absorb radiation. The net rate of heat transfer by radiation (absorption minus emission) relates to both the temperature of the object and the surrounding environment. For example, on a sunny day, the radiation from the sun warms your skin, demonstrating the principle of radiative heat transfer.

https://brainly.com/question/10219972

#SPJ3

Answer:

i would think the first two, but i cant be sure.

Explanation:

Answer: The answer is A

Explanation: The bumper is the first part of an automobile to be impacted when in a head-on accident