Which type of wave has particles moving in an elliptical or circular motion?
O surface
o longitudinal
O sound
O transverse

The coefficient of kinetic friction for that box is 0.745. You can determine from Newton second law.

As per data given:

box mass(M)= 5 kg = 5

Force required F = 40 N

First, assume μs and μk as the coefficient of static and kinetic friction. Normal reaction on the box due to the floor is given by:

N = M x g= 5 x 9.8 = 49 N

Force of static friction (fs) = μs x N = 49 x μs N

To make the box move, minimum force need has to higher then static frictional force, therefore:

fs = F = 40 N

μs x 49 = 40

μs = 0.816

Since acceleration of the box(a) = 0.7 m/s² then kinetic friction acting for the box :

force k = μk x N

force k = 49 × μk N

As per data given:

box mass(M)= 5 kg = 5

Force required F = 40 N

First, assume μs and μk as the coefficient of static and kinetic friction. Normal reaction on the box due to the floor is given by:

N = M x g= 5 x 9.8 = 49 N

Force of static friction (fs) = μs x N = 49 x μs N

To make the box move, minimum force need has to higher then static frictional force, therefore:

fs = F = 40 N

μs x 49 = 40

μs = 0.816

Since acceleration of the box(a) = 0.7 m/s² then kinetic friction acting for the box :

force k = μk x N

force k = 49 × μk N

Based on Newton's second law, we can determine μk

F − force k = M x a

40 − 49  x μk = 5 x 0.7

μk = 0.745

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Answer:

Electrostatic force

Explanation:

When we comb the hair

Answer:

50 out of 100 (ik its right)

Answer:

57? 17? 7? 77? 37? 47? 87? 97? 27? 67?

Explanation:

id'k

Answer:

C. Data is analyzed on a computer

Explanation:

Computers can analyze electrical signals, not radio signals. This means that the radio waves need to be converted to electrical signals to help the computer analyze the data.

Answer:

39

Explanation:

calculator

Answer:

39 is the answer. of your questions

Answer:

The index of refraction can be calculated using Snell's law:

n1sin(theta1) = n2sin(theta2)

where n1 and theta1 are the index of refraction and angle of incidence in the first medium (glass), and n2 and theta2 are the index of refraction and angle of refraction in the second medium (unknown material).

Plugging in the given values:

1.76sin(25) = n2sin(35)

Solving for n2:

n2 = (1.76*sin(25))/sin(35)

n2 ≈ 1.29

Therefore, the index of refraction for the unknown material is approximately 1.29.

The ball that is projected 125 meters straight upward has a total time in the air of: 10.1 s

The formulas for the vertical launch upward and the procedures we will use are:

Where:

Information about the problem:

Applying the maximum height formula and clearing the initial velocity we get:

y max = v₀²/(2*g)

v₀ = √(y max * (2*g))

v₀ = √( 125 m * (2 * 9.8 m/s²))

v₀ = √( 125 m * 19.6 m/s²)

v₀ = √2450 m²/s²

v₀ = 49.497 m/s

Applying the maximum time formula we get:

t max= v₀ / g

t max= 49.497 m/s / 9.8 m/s²

t max = 5.050 s

Applying  the time of flight formula, we get:

t(of) =2 * t max

t(of) =2 * 5.050 s

t(of) = 10.1 s

In physics vertical launch upwards is the motion described by an object that has been launched vertically upwards in which the height and the effect of the earth's gravitational force on the launched object are taken into account.

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The time spent in the air by the ball is 10.01 seconds.

The total time spent in the air by the ball is the sum of the time it spends moving up and the time it spends falling down.

The time spent by the ball moving up - time spent by the ball travelling down.

Time spent by the ball traveling down a distance of 125 meters is calculated using the formula given as follows:

t = √2h/g

Total time spent = 2 * √2h/g

where:

h = 125 m

g = 9.81 m/s²

T = 2 * √(2 * 125/9.81)

T = 10.01 s

Therefore, the time spent in the air by the ball is the sum of the time spent moving up and the time it spends falling down which are both equal.

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The statement that is true about the time constant is that the product of the resistance R and the capacitance C is equal to the time constant τ of the charging capacitor.

A time constant describes the rate of change of current or voltage in a circuit. When an RC (resistance-capacitance) circuit is charged, the time constant represents the duration required for the capacitor to charge to 63.2% of its maximum charge potential. It also represents the time required for the capacitor to discharge to 36.8 percent of its maximum potential.

The formula for calculating the time constant of an RC circuit is:τ = RC.

Where R is resistance, and C is capacitance.

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The change in entropy for the universe is equal to The sum of the change in entropy for the system and the change in entropy for the surroundings.

The change in entropy for the universe is a combination of the change in entropy for the system and the change in entropy for the surroundings. In an isolated system, where there is no exchange of matter or energy with the surroundings, the change in entropy for the universe would be zero.

However, in most real-world situations, systems are not isolated, and there is an exchange of energy and/or matter with the surroundings, resulting in changes in entropy for both the system and the surroundings.

Therefore, to determine the overall change in entropy for the universe, we need to consider the sum of the changes in entropy for the system and the surroundings.

The correct answer is The sum of the change in entropy for the system and the change in entropy for the surroundings.

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A. There is zero net force acting on the plane.

The correct answer is B) act on different objects. According to Newton's Third Law, whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object.

In Newton's Third Law of Motion, the action and reaction forces are described as equal in magnitude and opposite in direction.These two forces are referred to as the action force and the reaction force.

It is important to note that the action and reaction forces always act on different objects. For example, if you push against a wall, you exert a force on the wall (action force), and the wall exerts an equal and opposite force on you (reaction force). Both forces exist simultaneously, acting on different objects.

The equality of the action and reaction forces is independent of the objects' state of motion (stationary or moving with constant velocity).The correct option is answer B.

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In the article you mentioned, ionizing radiation with high frequency refers to electromagnetic waves that carry enough energy to remove tightly bound electrons from their atoms, creating ions. High-frequency ionizing radiation includes gamma rays, X-rays, and the extreme ultraviolet part of the electromagnetic spectrum.

These types of radiation have the potential to cause harm to living organisms and are found in various sources, such as cosmic rays, nuclear reactions, and medical imaging procedures.

Ionizing radiation generally refers to radiation with enough energy to ionize atoms or molecules, and therefore poses potential health risks to living organisms. High frequency radiation typically refers to electromagnetic radiation with wavelengths shorter than ultraviolet light.

While there may not be a direct mention of ionizing radiation or its frequency in the article, it is possible that the article touches on related topics such as radiation exposure and its potential health effects. As such, it may be important to read the article in full to understand any references to ionizing radiation or high frequency radiation.

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\(\huge\mathfrak\red {Answer:}\)

If a train travelled 500 meters in 25 seconds then,

Speed = 500m/25sec

\(\mathfrak\purple {Hope\: this\: helps\: you...}\)

speed=500m/25sec

20m/sec

After considering all the statements about the implications of Hubble's Law, the false statement is not present.

The first statement is that although galaxies move away from each other, they themselves are not expanding in size. This statement is true. Hubble's Law states that the distance between galaxies is increasing over time, but it does not imply that the galaxies themselves are expanding in size. Instead, the expansion of the universe is causing the space between the galaxies to stretch out.

The second statement is that if you were observing the universe from a distant galaxy, you would not see all the galaxies (except those in your own group) moving away from you. This statement is also true. Hubble's Law applies to the large-scale structure of the universe, and the motion of individual galaxies within a group or cluster can be influenced by other factors such as gravity. So if you were in a distant galaxy, you would not see all other galaxies moving away from you due to these local effects.

The third statement is that the law implies that the whole universe must be expanding. This statement is true. Hubble's Law provides evidence that the universe is expanding uniformly in all directions, which suggests that the expansion is happening on a global scale rather than being caused by some local effect.

The fourth statement is that the law can be used to measure distances to remote galaxies for which we can measure a Doppler shift. This statement is also true. Hubble's Law relates the distance between galaxies and their recessional velocity, which can be measured using the Doppler shift of their light. By measuring the redshift of light from a distant galaxy, we can determine how fast it is moving away from us and use this information to estimate its distance.

Finally, the fifth statement is that the law does not require us to be at the center of the expanding universe. This statement is true. Hubble's Law is based on the observation that all galaxies are moving away from each other, regardless of their location in the universe. This means that there is no special point in the universe that can be considered the "center" of the expansion.

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Answer:

20mA

Explanation:

because it is connected in series with the ammeter

The current through the 40Ω resistor in the given circuit is 20mA, which is explained below.

The volate across resistor R is 1V, as indicated by the voltmeter.

Since the potential of the battery is 3V, according to Kirchoff's voltage law, the voltage drop across 20Ω resistors must be 1V each since they are indentical.

Let a total current I passes through 20Ω resistor as it is connected to the battery in series. From Ohm's law:

20Ω × I = 1V

I = 50mA

Now the current indicated by the ammeter is 20mA which splits according to the reistors of 15Ω and 30Ω which are connected in parallel. Then again the current adds up to 20mA when leaving the set of parallel resistors, through the 40Ω resistor.

So the current through the 40Ω resistor is 20mA

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The acceleration of a bullet that leaves a 28-in rifle barrel at 2700 ft/s is 1.562 x 10⁶ m/s² and its time in the barrel is 0.0017s

a) How to determine the acceleration of the bullet

Converting inches to a foot

1 inch = 1/12 foot

28-in =  1/12 x 28 ft

28-in = 2.33ft

Therefore, the distance, s, covered by the bullet is 2.333ft

Using one of the equations of motion

2as = u² - v²

The initial velocity is 0

Where a = acceleration of the bullet

            s = distance

             u = initial velocity

             v = final velocity

a = v² - u² ÷ 2s

= (2700 ft/s)² - 0 ÷ 2 (2.333ft)

a = 1.562 x 10⁶ m/s²

b) How to determine the time of the bullet in the barrel

s = v² + u² ÷ 2

t = 2 ÷ (v² + u²)

t = 2 (2.333ft) ÷ (0 + 2700 ft/s)

t = 0.0017s

In summary, a bullet that leaves a 28-in rifle barrel at 2700 ft/s would have an acceleration of 1.562 x 10⁶ m/s², spending a time of 0.0017s in the barrel.

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Answer:

what do you need helo with

False.In a hash table data structure, the time complexity for finding a value (retrieving an element) is typically O(1) on average, assuming a good hash function and a well-distributed set of keys. This means that the time it takes to find a value is constant, regardless of the size of the data structure.

On the other hand, in a doubly linked list data structure, finding a value requires traversing the list from the beginning or end until the desired value is found. The time complexity for finding a value in a doubly linked list is O(n), where n is the number of elements in the list. This means that the time it takes to find a value in a doubly linked list increases linearly with the size of the list.Therefore, it takes more time to find a value in a doubly linked list data structure compared to a hash table data structure.

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We know that

• The initial speed is 5.8 m/s.

• The time elapsed is 1.1 seconds.

• The final speed is zero because it will stop.

Let's find the acceleration. We have to use a formula that involves the initial speed, the time spent, the final speed, and acceleration.

Now we use the given magnitudes to solve for a.

(a) The magnitude of the chicken's acceleration is -5.3 m/s^2.

Now, to find how far the chicken slid, we have to use a formula that includes distance.

Let's use the magnitudes we know to find d.

(b) The chicken slid 3.2 meters.

As you can observe, the positive direction of the movement is towards the home plate. So, the acceleration is towards the third base because it's negative, that is, the chicken is slowing down to get to home plate.

Therefore, the direction of the acceleration is towards the third base.

"Two signal voltages having slightly different voltage levels cannot be at the same binary levels", is a false statement.

The same binary values can be represented by two signal voltages at slightly different voltage levels. For the purpose of encoding binary values in digital systems, a range of voltage levels has been established, generally a high voltage level (such as 5 volts) for a logic "1" and a low voltage level (such as 0 volts) for a logic "0." As long as the difference between the two signal voltages is within the permissible tolerance range, it is still possible to interpret them as the same binary level for these voltage levels.

For instance, if the low voltage level for logic "0" is 0 to 0.4 volts and the high voltage level for logic "1" is defined as 4.8 to 5.2 volts, then two signal levels of 4.9 volts and 5.1 volts would both be read as logic "1." As long as the voltage level stays within the tolerance range, a little variation in voltage level has no impact on the binary interpretation.

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Answer:

\(8.5\frac{m}{s}\)

Explanation:

Use Kinematics:

\(v = v_0 + at\)

\(v = 3 + 1.1 * 5\)

\(v = 8.5 \frac{m}{s}\)

The horizontal displacement from the firing position to the point of impact is approximately 11,432.78 meters when a projectile is fired with an initial muzzle speed of 360 m/s at an angle of 25 degrees from a position 6 meters above the ground level.

To calculate the horizontal displacement, we can use the formula Horizontal Displacement = Initial Velocity * Time of Flight * Cosine(Angle). Firstly, we need to find the time of flight. Using the formula Time of Flight = 2 * Initial Velocity * Sine(Angle) / Acceleration due to Gravity, where the acceleration due to gravity is approximately 9.8 m/s², we can calculate the time of flight. Plugging in the given values, we obtain a time of flight of approximately 36.28 seconds. Now, with the time of flight known, we can proceed to calculate the horizontal displacement. By substituting the initial velocity, time of flight, and angle into the formula, we find the horizontal displacement to be approximately 11,432.78 meters. This value represents the distance between the firing position and the point of impact. It is important to note that the calculation assumes ideal projectile motion with no air resistance and a uniform gravitational field.

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Answer:

0.650

Explanation:

Move the decimal point three times to the left.

Answer:

A. Their shape

Explanation:

The name clearly shows that the shape of these canals are semi-circular. The semi-circular canals consist of three tubes filled with fluid and located in the inner ear. They help to maintain balance and transmit impulses through the movement of the fluids. The impulses sent through these fluids are sent to the brain for interpretation.

The function of the canals are not indicated by the name, rather the shape is hinted through the name.

Answer:

An element is a pure substance that contains only one type of atom. TRUE. 2. ... FALSE, they are all carbon atoms. 7. The smallest unit of matter is an atom. TRUE. 8. When an ... TRUE. 10. Most of the mass of an atom is found in the electron layers. FALSE. 11. The nucleus of an atom contains protons and neutrons. TRUE ...

Explanation:

Answer:

By opening the door, Elijah is using the chemical energy, which he obtained from eating food to do work. Thus, he is converting chemical energy to mechanical energy.

Stretching the spring by opening the screen door convert the potential energy which is stored in the spring to kinetic energy.

Overall there is conversion of chemical energy to potential energy.

By letting the door go, Elijah is using chemical energy. By snapping shut, the door is converting potential energy to kinetic energy. The overall energy change is conversion of chemical energy to kinetic energy.

Explanation:

Announcement 1: Fluid mechanics is a branch of chemistry that involves having a look at fluids:  c) False, True

Fluid mechanics is the branch of physics concerned with the mechanics of fluids and the forces on them. It has programs in an extensive variety of disciplines, such as mechanical, aerospace, civil, chemical, and biomedical engineering, geophysics, oceanography, meteorology, astrophysics, and biology. Fluid mechanics is the look at of the forces of the fluid and the way fluids flow. Fluid mechanics may be divided into parts: fluid statics and fluid dynamics. Fluid statics is the observation of fluids at rest, and fluid dynamics is the study of fluids in motion.

Fluid mechanics is the look at fluid behavior (beverages, gases, blood, and plasmas) at relaxation and in movement. Fluid mechanics has a huge variety of packages in mechanical and chemical engineering, organic structures, and in astrophysics.

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The telescope that is the best option if visible radiation is blocked is b. infrared telescope

If visible light is obscured, an infrared telescope is generally used. Since infrared radiation has longer wavelengths than visible light, infrared telescopes are made to detect and study this type of electromagnetic energy. They may also view various celestial things and phenomena that mostly emit infrared light thanks to this.

While radio telescopes are employed to determine and study radio waves, X-ray telescopes are used to watch X-rays, and UV telescopes are utilized to observe ultraviolet light. None of these alternatives is intended to deal with the situation where visible radiation is blocked. However, in these circumstances, infrared telescopes can still deliver useful observations.

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Complete Question:

Which of the following telescope is the best option if visible radiation is blocked?

a. ultraviolet telescope

b. lnfrared telescope

c. radio telescope

d. ray telescope