Why are ions formed?
Group of answer choices

A.Because atoms have the same number of protons and electrons

B. Because atoms want 8 valence electrons

C. To make our lives difficult

D. Because atoms gained neutrons

Answer:

5.59 m/s2

Explanation:

F = 1900 N

m = 340 kg

F = ma

Therefore, a = 1900/340 = 5.59

Answer:

have a greater mechanical advantage

Explanation:

this enables the mechanism to output a large amount of force compared to the force put into it due to ratio of the wheel and the axle therefore providing enough force to steer the rather heavy wheels while saving the driver some muscle power

Answer:

Electrical energy is transferred from the wall socket to the computer. Electrical energy is transformed to sound and light energy when the computer is turned on. Electrical energy is transformed to heat energy when the computer stays on.

This is most like Fixed-interval reinforcement schedule.

Therefore the answer is Fixed-interval

The scenario described in the question is most similar to a fixed-interval reinforcement schedule, in which reinforcement is delivered after a fixed period of time, such as every two weeks, as long as the behavior occurs.

This type of reinforcement schedule is often used in the workplace to encourage reliable attendance and work performance.

Option variable-ratio, involves reinforcement after a variable number of responses and is often associated with gambling behavior. Option fixed-ratio, involves reinforcement after a fixed number of responses, while option variable-interval, involves reinforcement after a variable amount of time has elapsed.

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Answer:

Work done = 838470 Joules.

Explanation:

Given the following data;

Power = 19 hp

Time = 1 minute to seconds = 60 seconds.

Next, we would convert the unit of power in "hp" to "Watt."

1 Watt = 0.00135962 horsepower

x Watt = 19 horsepower

Cross-multiplying, we have;

19 = 0.00135962x

x = 19/0.00135962

x = 13974.5 Watts.

Now, to find the work done in moving the mower;

Work done = power * time

Substituting into the formula, we have;

Work done = 13974.5 * 60

Work done = 838470 Joules.

The difference in the two path lengths, l2 - l1, is equal to (5/2) times the wavelength of the sound.

To find the path length difference, we need to consider the interference pattern created by the two speakers. Since point P is at the third sound intensity minimum (dark fringe) from the central sound intensity maximum, we know that it corresponds to the third destructive interference.

For dark fringes in interference patterns, the path difference between the two waves is given by:

l2 - l1 = (m + 1/2) * λ

where m is the order of the fringe and λ is the wavelength of the sound.

In this case, since P is at the third dark fringe, m = 2.

Therefore, the path difference is:

l2 - l1 = (2 + 1/2) * λ = (5/2) * λ.

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The force acting on the car is 5.49 Newton.

The definition of force in physics is: The push or pull on a massed object changes its velocity. It has a direction and a magnitude.

Given that: acceleration of the car: a = 4.95 m/s^2.

Mass of car: m = 1.11 kg.

the force acting on it = ma

= 4.95 × 1.11 Newton

= 5.49 Newton.

Hence, the force acting on it  is  5.49 Newton.

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Answer:

True

Radiometric dating is a process of identifying the age of a material based on known half-lives of decaying radioactive materials found in both organic and inorganic objects. Radiometric dating is often used to determine the age of rocks, bones, and ancient materials.

Answer:

false

Explanation:

Answer:

c. Y

Explanation:

Newton's third law of motion states that action and reaction are equal and opposite. Hence for every action, there is an equal and opposite reaction.

Considering the system of forces shown in the image, W and Y are  opposite forces. When the driver slams on the brakes, he will be pushed forward towards the windscreen. The force Y exerted by the seat belt keeps him on the drivers seat by moving him backwards towards the seat.

Answer: The sound will increase in pitch.

Explanation:

According to the Doppler Effect, sounds will increase in pitch as they are nearing the listener, and then decrease in pitch as the sound moves further away. This is because when sound waves travel a shorter distance, the waves are more compact (higher frequency), producing a higher pitch. The further a listener is from the sound, the lower the pitch because the sound waves are more spread apart (lower frequency).

I believe the answer to your question would be True

Answer:

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion

Explanation:

we have that from the Question"Three people trying to move a box. Which set of forces will result in a net force on the box of 20 N to the right?" it can be said that  

From the Question we are told

Three people trying to move a box. Which set of forces will result in a net force on the box of 20 N to the right?

Generally the equation for Net Force is mathematically given as

Fn=Fx+Fy...

Therefore

The force from the option that give a  Net Force  of 20 to the right is

\(Fn=(28+10)-(18)\\\\Fn=20N\)

Therefore

The set of forces which will result in a net force on the box of 20 N to the right is

Option D

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Answer: The correct answer is A

55N, 16N, 17N

Explanation: I took the quiz

The statement is incorrect as the Speed of anything cannot be negative.

The speed of a body is a scalar quantity and the speed of anybody may be defined as the distance covered by the body per unit of time. the speed of anybody is represented in the form of Distance and time as:

Speed = Distance/time

As both Distance and time are quantities that can never have a negative value therefore the speed of a body also can never have a negative value. In this statement a student refers to a bird and says that its speed is - 7m/s which indicates that the speed is negative that is why this statement is wrong as speed can never have a negative value. The speed of a body is always positive or zero.

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Answer:

Im not 100% sure so don't completly rely on these answer s

#1 is B

#2 ia B

#3 is A

#4 is A

#5 is A

and i think #6 is A

im 100% sure that 3 and 4 are A tho  

Explanation:

The correct answer is 30 keV.

hf=(1.60×10−19C)(50.0×103V)

Any device that uses X-rays is referred to as an X-ray machine. An X-ray generator and an X-ray detector might be part of it.

Examples comprise:

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Answer:

45km/hr

Explanation:

Total distance=450km

Total speed=50km/hr

Total time= distance/speed

=450/50

=9hrs

distance a=180km

speed a=60km/hr

Time a=180/60

=3hrs

Distance b=450-180=270km

Speed b=?

Time b=270/speed b

Total time=time a + time b

9=3+(270/speed b)

270/speed b =9-3

270/speed b =6

6*speed b =270

Speed b=270/6

Speed b=45km/hr

Answer:

45km/hr

Explanation:

Total distance=450km

Total speed=50km/hr

Total time= distance/speed

=450/50

=9hrs

distance a=180km

speed a=60km/hr

Time a=180/60

=3hrs

Distance b=450-180=270km

Speed b=?

Time b=270/speed b

Total time=time a + time b

9=3+(270/speed b)

270/speed b =9-3

270/speed b =6

6*speed b =270

Speed b=270/6

Speed b=45km/hr

The vector v with a magnitude of 6 and the same direction as u = [1, 1] is v = [6, 6].

The given vector u = [1, 1] has a magnitude of √(1² + 1²) = √2. To find a vector v with a magnitude of 6 and the same direction as u, we need to scale up the vector u by a factor of 6/√2.

The unit vector in the same direction as u is u/|u| = [1/√2, 1/√2]. To obtain v, we multiply this unit vector by the desired magnitude of 6, resulting in v = 6 × [1/√2, 1/√2] = [6/√2, 6/√2] = [3√2, 3√2]. Therefore, the vector v with a magnitude of 6 and the same direction as u is v = [3√2, 3√2], which can be simplified as v = [6, 6].

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The vector v with a magnitude of 6 and the same direction as u = [1, 1] is v = [6, 6].

The given vector u = [1, 1] has a magnitude of √(1² + 1²) = √2. To find a vector v with a magnitude of 6 and the same direction as u, we need to scale up the vector u by a factor of 6/√2.

The unit vector in the same direction as u is u/|u| = [1/√2, 1/√2]. To obtain v, we multiply this unit vector by the desired magnitude of 6, resulting in v = 6 × [1/√2, 1/√2] = [6/√2, 6/√2] = [3√2, 3√2]. Therefore, the vector v with a magnitude of 6 and the same direction as u is v = [3√2, 3√2], which can be simplified as v = [6, 6].

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Maxwell's equations describe the behavior of electromagnetic waves. In this particular electromagnetic field, we can see that the electric field (E) and magnetic field (B) are perpendicular to each other and both vary sinusoidally with time and distance.

To show that this field satisfies Maxwell's equations, we need to confirm that it satisfies the wave equation.
The wave equation relates the second derivative of the electric field with respect to distance (x) to the second derivative of the electric field with respect to time (t), and similarly for the magnetic field. When we apply the wave equation to this field, we find that w^2 = c^2k^2, where w is the angular frequency and c is the speed of light.

This relationship between w and k is known as the dispersion relation and it ensures that this particular electromagnetic field satisfies Maxwell's equations. In summary, the electromagnetic field given by (9.64) can satisfy Maxwell's equations if the angular frequency (w) and wave number (k) are related through the dispersion relation w^2 = c^2k^2.

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Answer:

wood because, Coal, oil and natural gas are examples of natural gas. Biogas is the mixture of gases produced by the breakdown of organic matter in the absence of oxygen, usually consisting of certain quantities of methane and other constituents. therefore wood is not a fossil fuel

Answer:

516m/s^2

Explanation:

Given the following :

Height of aircraft = 10000m

Acceleration due to gravity (g) = 10m/s^2

Angle of projection (θ) = 60°

Height of aircraft = maximum height

Maximum height of a projectile:

H = (u^2sin^2θ) / 2g

Where H = height

u = initial velocity

10000 = [(usinθ)^2] / 2g

10000 = [(u * sin60°) ^2] / 2*10

10000 = (0.866 * u)^2 / 20

20 * 10000 = 0.749956 * u^2

200000 = 0.749956u^2

u^2 = (200000/0.749956)

u^2 = 266,682.31

u = √266,682.31

u = 516.41292

Initial velocity (u) = 516m/s^2

When a car travels around a curve in the road centripetal force helps to keep the car traveling in a curved path.

The primary factor is the force of friction between the tires and the road. This force is what allows the car to maintain traction and grip the road surface, preventing it from sliding off the curve. As the car turns, the force of friction acting on the tires generates a centripetal force, which pulls the car towards the center of the curve.

Other factors that contribute to keeping the car on the curved path include the design of the road and the car's suspension system. Roads are often banked on curves, which means they are angled to the inside of the curve. This banking helps to create a force that pushes the car towards the center of the curve, reducing the amount of lateral force required to maintain the turn. The car's suspension system also plays a role in keeping the car stable during the turn by absorbing shocks and vibrations and helping to maintain the car's balance.

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Breaking the cart and frictional force from the road  will make a deceleration on the cart. The net force becomes in the opposite direction as the sign of acceleration is reversed.

Acceleration of an object is the measure of the rate of change in its velocity. It is a vector quantity and have both magnitude and direction. As the object is slowing down, the object is said to be decelerating.

If the cart is moving in a constant velocity it is having a constant magnitude but the acceleration is there if a change in direction. The deceleration is the opposite of the acceleration and the sign becomes negative thus not affecting the magnitude of   force.

Law of conservation of momentum states that, the total initial momentum of two colliding bodies is equal to the final momentum  of the bodies.

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Answer:

Time,

t

=

3.1

s

Temperature,

T

=

23.0

∘

Speed of the sound at

23.0

∘

can be given as,

{eq...

Answer:

no.

Explanation:

Answer:

Dry lubricants or solid lubricants are materials that, despite being in the solid phase, are able to reduce friction between two surfaces sliding against each other without the need for a liquid oil medium.

Explanation:

Answer:

Your answer is graphite :) Have a nice day

Explanation:

Answer:

I hope the answer helps you

The phase difference between the waves arriving at point P from antennas A and B is approximately 34.5 radians.

Δφ = 2πΔx/λ

We can calculate the wavelength of the radio waves using the formula:

λ = c/f

λ = c/f = \(\frac{3*10^{8} }{97.0*10^{6} } = 3.09m\)

Now we can calculate the phase difference:

Δx = \({(d^2+x^2)^0.5}-x\) =\([(9.30 m)^2 + (75.0 m)^2]^0.5 - 75.0 m\) ≈ 16.9 m

Δφ = 2πΔx/λ = 2π(16.9 m)/(3.09 m) ≈ 34.5 radians

The phase difference is a concept in physics that refers to the difference in the timing or position of two oscillations or waves. When two waves with the same frequency and amplitude are superimposed, they can either add constructively or destructively, depending on their phase relationship. If the waves are in phase, meaning their peaks and troughs line up perfectly, they will add constructively and result in a wave with twice the amplitude.

However, if the waves are out of phase, meaning their peaks and troughs do not align, they will add destructively and result in a wave with zero amplitude. Phase difference is usually expressed in terms of degrees or radians. A phase difference of 180 degrees (or pi radians) means that the waves are completely out of phase, while a phase difference of 0 degrees (or 2*pi radians) means that they are in phase.

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You should disconnect both the blue and red wires connected to the power switch when opening up the Mr. Coffee.

When working on electrical appliances like the Mr. Coffee, it's crucial to ensure safety by disconnecting all power-related wires. In this case, both the blue and red wires are connected to the power switch, which means they are responsible for transferring electricity within the device.

By disconnecting both wires, you can prevent accidental electrical shock and damage to the device while working on it. Always remember to unplug the appliance from the power source and exercise caution when handling electrical components. If you're not confident or experienced in handling electrical devices, it's best to consult a professional for assistance.

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