Which of these are created by changing magnetic and electric fields?

1.) Radiations which travel with different speeds

2) Compressions which travel with different speeds

3) Transverse waves which travel with the speed of light

4) longitudinal waves which travel with the speed of sound

Answer:

Its state is in uniformly accelerated motion

Explanation:

When an object is acted upon the force of gravity only, we said that the object is in free fall.

According to Newton's second law of motion:

[tex]F=ma[/tex]

where F is the net force on an object, m is its mass, a its acceleration, when the net force on an object (F) is non-zero, than the object accelerates (because a is non-zero), so the object is in accelerated motion.

In case of free fall, the rate of acceleration of the object is equal to [tex]g=9.8 m/s^2[/tex], the acceleration due to gravity, and it is constant. So, the object is moving by uniformly accelerated motion.

B. 24 ohms. D. Touch/hold feature

D. From negative to positive =negative charges

B. 24 ohms.

in parallel, combined resistance is less than the lowest resistance

Final answer:

The Touch/Hold feature of a DMM allows measurement reading after removing the probes. Electrons travel from negative to positive, and the total resistance of a 40 ohm and 60 ohm resistor in parallel is 24 ohms.

Explanation:

The feature of a Digital Multimeter (DMM) that allows you to connect the test probes in the circuit, remove the probes, and then read the measured value on the display is known as the Touch/Hold feature. When answering the direction electrons travel, they move from negative to positive, which corresponds to conventional current direction from positive to negative in circuit theory.

Regarding the circuit containing a 40 ohm resistor and a 60 ohm resistor connected in parallel, the total resistance value you should read with a DMM is calculated by using the formula for parallel resistance: 1/R_total = 1/R1 + 1/R2. In this case, it would be 1/R_total = 1/40 + 1/60, which gives R_total = 24 ohms after calculating the sum and inverting it.

Answer:

OXYGEN

Explanation:

from odyssey

To calculate the distance to a star, astronomers observe it from different places along Earth's orbit around the Sun. If they measure the object's position several months apart, their "two eyes" will have a separation of well over 100 million miles!

The de Broglie wavelength of rubidium atoms at 0.20 µK can be found using the de Broglie equation after determining the atoms' momentum, which involves calculating their velocities at the given temperature. Since the temperature is extremely low, the de Broglie wavelength will be relatively large.

The student is seeking the de Broglie wavelength of rubidium atoms cooled to 0.20 µK in an atom trap. To find the de Broglie wavelength, we must first calculate the momentum of the atoms, which can be done using the temperature and kinetic theory to find the velocity and then the momentum, assuming nonrelativistic speeds. The de Broglie wavelength (λ) is given by the equation λ = h/p, where h is Planck's constant and p is the momentum of the particle.

Without knowing the exact mass of rubidium or its velocity at this temperature, we cannot calculate the specific wavelength. However, since the temperature is very low, we can expect the wavelength to be relatively large compared to what it would be at higher temperatures due to the inversely proportional relationship between momentum and wavelength.

By changes of state if you mean like liquid to gas, solid to liquid etc then the the changes of state would be:

vaporization (Liquid to gas

condensation (gas to liquid)

Sublimation(solid to gas)

Deposition (gas to solid)

Melting (solid to liquid)

Freezing ( liquid to solid)

Answer:

False

Explanation:

It is false that you will stop learning new tasks and skills once you are hired for your first job. Even if you have been able to obtain a job, this does not mean you can stop learning. It is likely that your job will present new challenges, and you need to be prepared for these. Moreover, you might also change jobs in the future, and knowing how to perform a wide variety of skills would most likely help you in your future.

Answer:

C

Explanation:

25% is two half lives.

Each half life requires 5730 years.

So two half lives requires  

2

×

5730

Related questions

Answer:  C) Multiply 5730 years by 2 since two half-lives have gone by for carbon.

Explanation:

Multiply 5730 years by 2 since two half-lives have gone by for carbon. 5730 years will go by and 50% will remain. When 25% is remaining, another 5730 years will have passed. Therefore, multiply 5730 years by 2.

The Answer would be C because it is a process called synchronous rotation. which means that one side of the moon is always facing us. or (tidal locking)

Answer:

C. The moon is tidally locked with the Earth.

Explanation:

Note that

[tex]W = Fd \cos \theta[/tex]

Thus, here,

W = (2000 N)(30 m)(cos 15) = 57955.54958  J

Here, we only have 2 significant figures. Hence, in 2 significant figures,

[tex]W = 5.8*10^4 \; J[/tex].

Answer:

5.8 × 10^4 J

Explanation:

Given that,

Distance, s = 14 m

Time, t = 2 minutes = 2*60 = 120 s

Velocity = ?

Since, we know that,

Velocity = Distance / time

V = s/t

V = 14/ 120

V= 0.11667 m/s

The average velocity of Sandra will be 0.11667 m/s

Sandra’s average velocity is 0.1166 m/s

Explanation:

Velocity is a vector quantity and it is defined as the rate of change in displacement with respect to time. So ratio of displacement to time taken for that displacement or distance covered will give the magnitude of velocity.

Average velocity is defined as the average of different velocities exhibited by the object to cover different distances in different time intervals. As here only one distance and one time interval is given, average velocity of Sandra will be equal to the magnitude of velocity of Sandra.

So as Sandra moves 14 m distance in 2 m time, the velocity is

            [tex]\text {Average velocity }=\text {Magnitude of Velocity}=\frac{\text {Distance}}{\text {Time}}[/tex]

As the time is given in the units of minute, it should be converted to seconds. So the next step will be

    [tex]\text { Average Velocity }=\frac{14 \mathrm{m}}{2 \times 60 \mathrm{s}}[/tex] = 0.1166 m/s

Remark

There are 2 kinds of Beta Decay. This one is an example of a neutron becomes a proton and the emitted  particle is an electron.

[tex]_{11}^{23}\text{Na}\longrightarrow_{12}^{23}\text{Mg}+_{-1}^{ 0}\text{1e-}[/tex]

Answer:

pH is a measure of the hydrogen ion concentration in an aqueous solution. Essentially, pH measures acidity and alkalinity on a scale from 0.0 to 14.0.

Answer:

B. Become a white dwarf star.

Explanation:

As the Sun is a medium size star in mid of its life of around 10 Billion years. When it will exhaust all the Hydrogen in the core, it will go through a long process of death: Converting into a red giant to Planetary Nebula to a white dwarf. It will spend trilliion of years in white dwarf phase before fading and converting to a Black dwarf.

If it had been a massive star it would have made a Supernova and then ultimately a black hole or a neutron star.

Our sun, a medium-sized star, will eventually turn into a white dwarf once its hydrogen fuel is exhausted. This is following the standard stellar evolution process. However, larger stars may explode as a supernova or form a black hole.

Our Sun is a star of average mass and will follow the stellar evolution process of stars in its mass range. It is predicted that once it exhausts its hydrogen fuel, it will eventually expand into a red giant and subsequently shed its outer layers, leaving behind a star core. This star core will shrink under its own gravity and become a white dwarf star.

In contrast, stars significantly larger than the Sun can explode in a spectacular event known as a supernova. Very massive stars have the potential to collapse under their own gravity and form a black hole.

https://brainly.com/question/32220788

#SPJ6

Given that

Velocity of missile (v) = 20 m/s ,

Angle of missile (Θ) = 53°

Determine ,   Vertical component  = v sin Θ

                                                        = 20 sin 53°

                                                        = 15.97 m/s

22.94 seconds, or in estimation it is 23 seconds.

7,800/340, is how you find that out and so it would take

22.94117647058824 seconds

A carpenter using saws and cutting tools as the tools make loud noises.

Answer:

a carpenter using saws and cutting tools

Explanation:

In noise cancelling system we know that two sounds are cancelled just by using the concept of destructive interference.

Here when two sounds which are in opposite phase are superimposed with each other then due to this superposition of waves the resultant intensity will be less than the intensity of any individual wave.

This phenomenon is known as destructive interference.

This is used to decrease the level of sound in such a part of work where we have large sound in output so here correct answer will be

a carpenter using saws and cutting tools

This is because it produce large noise while we use this cutting tools

Answer:

Sonar can be used to measure the depth of the ocean bottom

Explanation:

Sonar is a device which uses ultrasound waves to measure the depth of the ocean.

When a sonar is used on a boat, the device emits an ultrasound wave. This wave travels from the boat to the bottom of the ocean, then it is reflected and travels back to the boat. By knowing the speed of the sound wave in water, and by measuring the time it takes for the wave to come back, one can measure the depth of the ocean. In fact:

- v is the speed of the sound wave in water (approximately 1500 m/s)

- t is the total time it takes for the wave to leave the sonar and come back

- d is the distance between the boat and the bottom of the ocean

The sound wave takes a time t to cover twice the distance between the boat and the bottom of the ocean (2d), so we have

[tex]v=\frac{2d}{t}[/tex]

So we can calculate the depth of the ocean:

[tex]d=\frac{vt}{2}[/tex]

Acceleration = (change in speed) / (time for the change)

Change in speed = (speed at the end) - (speed at the beginning).

Change in speed = (10 m/s) - (zero) = 10 m/s

Time for the change = 3 sec

Acceleration = (10 m/s) / (3 sec)

Acceleration = (3 and 1/3) m/s²  or 3.333 m/s²

To calculate the acceleration, use the change in velocity divided by the time. For an object going from rest to 10 m/s in 3 seconds, the acceleration is 3.33 m/s².

The question addresses the calculation of acceleration of an object in motion. To find the acceleration, we can use the formula:

Acceleration (a) = Change in velocity (omenclature) / Time (t)

In this scenario, the object goes from rest (initial velocity, u = 0 m/s) to a final velocity (v) of 10 m/s in a time (t) of 3 seconds.

Thus, acceleration (a) is calculated as:

a = (v - u) / t

a = (10 m/s - 0 m/s) / 3 s

a = 10 m/s / 3 s

a = 3.33 m/s²

The acceleration of the object is therefore 3.33 m/s².

At some speed, the drag or force of resistance will equal the gravitational pull on the object. At this point the object ceases to accelerate and continues falling at a constant speed called the terminal velocity (also called settling velocity).

Nuclear power generates large amounts of power with limited production of greenhouse gases.

is the answer

Answer: Nuclear power generates large amounts of power with limited production of greenhouse gases.

Explanation:

A gem is a stones that is used to make jewelry. A crystal is apure substance that has molecules arranged in "a regular geometric pattern". A gem can also be a crystal, whereas a crystal can not be a gem.

Hope this helps. <3

the answer is 3

hope it helped

3 hits because it should take 3 strong hits to get it over the net.

Your answer should be Cold Blooded Animals. Cold blooded animals don't have control over their own body temperature like humans or mammals do, most times cold blooded animals are reptiles, amphibians, etc. so they have to lay on rocks or someplace in the sunlight to warm up and have to go to water or shady areas to cool off. Hope this helps! =^-^=

Ohms law: This law relates voltage difference between two points. Mathematically, the law states that V=IR;

                Where

                          V = voltage difference ; in volts

                          I = Current ; in Amperes

                          R = Resistance ; in ohms

1. Answer : given that R = 10 ; V= 12 V ;  I = ?

From ohms law,    I = V/R

                                = 12/10

                                = 1.2 Amp.

2. Answer:  given that R = 10 ; V= ? ;  I = 5

From ohms law,    V = IR

                                 = 10×5 = 50 V

3 . Answer:  given that R = ? ; V= 120 ;  I = 5

From ohms law,    R =  V/I

                                 = 120/5

                                 = 24 Ω

4 . Answer:  given that R = ? ; V= 10 ;  I = 20

From ohms law,    R =  V/I

                                 = 10/20

                                 = 0.5 Ω

5 . Answer:  given that R = 480 ; V= 24 ;  I = ?

From ohms law,  I =  V/R

                              = 24/480

                              = 0.05 A

6. Answer:  given that R = 150 ; V= ? ;  I = 1

From ohms law,  V = IR

                               = 1 × 150

                               = 150 V

Answer:

"the force of attraction between two objects"

Explanation:

According to Newton's Universal Law of Gravitation, gravity is a force of attraction acting between objects that possess mass. The fact that we only observe gravitational attraction (as opposed to repulsion) makes gravity unique among the known forces.

Answer:

the force of attraction between two objects

Explanation:

Let the initial velocity be u = 23 m/s

Let the final velocity be v.

Vehicle stops finally, therefore v = 0 m/s

Here during the braking, vehicle decelerates with constant acceleration,  thus the change in velocity is linear from initial velocity to final velocity.

for the Given condition:

Write the expression for the average speed [tex]V_{avg}[/tex]

[tex]V_{avg} =  \frac{u+v}{2}\\[/tex]

Substitute the values in the above expression.

[tex]V_{avg} = \frac{23+0}{2}\\              = 11.5 m/s[/tex]

Hence, the average speed during braking is 11.5 m/s

3700000 no problem ok