the A radio signal has a frequency of 1.023 × 108 HZ. If speed of the signal in air is 2.997 × 108 m/s, what is the wavelength of the signals?​

Answer:

1136.36km/hr

Explanation:

Explanation:

On earth,

g=10 m/s^2

When M=2 kg,

weight on earth=2×10

=20N

When M=3.5 kg,

weight on Earth=3.5×10

=35N

When M=5kg,

weight on Earth=5.25×10

=52.5N

Increasing the pressure inside the extruder barrel is not a function of the screen pack and breaker plate.

The screen pack and breaker plate have several functions, including:
1. Filtering out contaminants and impurities from the molten plastic.
2. Creating uniform melt flow.
3. Reducing pressure fluctuations.
However, they do not serve to increase the pressure inside the extruder barrel.

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Answer:The disturbance created by a source of sound in the medium travels through the medium and not the particles of the medium

Explanation:i hope this is right

The tread marks on the road from a car with antilock brakes that pump on and off automatically every fraction of a second would likely appear as a series of short, intermittent marks rather than continuous skid marks. The presence of these intermittent marks indicates that the ABS is functioning correctly and assisting the driver in maintaining control while stopping the vehicle in an emergency situation.

Antilock brakes are designed to prevent the wheels from locking up during braking, allowing the driver to maintain steering control. When the brakes are applied, the antilock braking system (ABS) rapidly pumps the brakes on and off, reducing the braking force to each wheel in a controlled manner. This pumping action helps to prevent the wheels from completely locking up and skidding on the road surface.

As a result, the tread marks left by a car with ABS would not be continuous skid marks but rather a series of shorter, intermittent marks. These marks would indicate the points where the wheels momentarily grip the road as the ABS modulates the braking pressure. The presence of these intermittent marks indicates that the ABS is functioning correctly and assisting the driver in maintaining control while stopping the vehicle in an emergency situation.

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Answer: 300 J

Explanation:

Force = 150 KJ

Distance = 2.0 m

The minimum amount of work done by a hydraulic lift to raise a 150-kg aluminum block 2.0 meters vertically would be 2940 Joules, as the work done is the product of the force applied to the displacement of the object, therefore the correct answer is option B.

The total amount of energy transferred when a force is applied to move an object through some distance

The work done is the multiplication of applied force with displacement.

Work Done = Force × Displacement

As given in the problem we have to find out the minimum amount of work done by a hydraulic lift to raise a 150-kg aluminum block 2.0 meters vertically.

The minimum work done = 150 × 9.8 × 2

                                          = 2940 Joules

Thus, The minimum amount of work done by a hydraulic lift to raise a 150-kg aluminum block 2.0 meters vertically would be 2940 Joules.

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The relative speed of the two charged rods is approximately 234.3 m/s.

The potential energy of the system is given by:

U = k(Q/2) * (1/a - 1/(a + L))

Ui = 2U = kQ^2/L

The final kinetic energy of the rods can be found using the formula:

K = (1/2)mv²

v = √(2U/m) * \((L/4)^(1/2)\)

Substituting the given values, we get:

v = √(2 * 9 x \(10^9\) Nm²/C² * (10 x \(10^{-6}\)C)² / (0.5 kg)) * \((50/4)^(1/2)\)

v ≈ 234.3 m/s

Relative speed is the velocity of one object with respect to another object. It is the speed at which an object appears to move when observed from another object in motion or at rest. When two objects are moving in the same direction, their relative speed is the difference between their individual speeds. For example, if a car is moving at 50 km/h and a truck is moving at 60 km/h in the same direction, the relative speed of the car with respect to the truck is 10 km/h (60 km/h - 50 km/h).

Relative speed is an important concept in physics as it helps to understand the motion of objects with respect to each other, and is often used in calculations related to collisions and other physical interactions between objects. On the other hand, when two objects are moving in opposite directions, their relative speed is the sum of their individual speeds.

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The visual impairment that involves fluid buildup in the eye, leading to increased pressure and potential damage to the optic nerve, is called glaucoma.

Glaucoma is a group of eye conditions characterized by elevated intraocular pressure (IOP) due to a disruption in the normal flow and drainage of fluid (aqueous humor) within the eye. The increased pressure can cause damage to the optic nerve, which is responsible for transmitting visual information from the eye to the brain. If left untreated or uncontrolled, glaucoma can progressively lead to vision loss and eventual blindness. It is often referred to as the "silent thief of sight" because the symptoms are not always apparent in the early stages. Regular eye examinations and early detection are crucial in managing glaucoma, as various treatment options, including medication, laser therapy, or surgery, can help lower the intraocular pressure and preserve vision.

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The unit tangent vector T(t) for the curve defined by r(t) = (e², 2t, e) at t = 2 is \(\[T(2) = \left(\frac{e^2}{\sqrt{e^4 + 16 + e^2}}, 4, e\right)\]\). The unit normal vector N(t) for the curve at \(\[N(2) = \left(\frac{-2e^2}{\sqrt{4e^4 + 1}}, 1, 0\right)\]\).

The normal acceleration ar at \(\[ar(2) = \frac{\sqrt{4e^4 + 1}}{\sqrt{e^4 + 16 + e^2}}\]\). The tangential acceleration at t = 2 is aT(2) = 0 since the curve is defined as a straight line and has no curvature.

To find the unit tangent vector T(t), we take the derivative of the position vector r(t) with respect to t and normalize it by dividing by its magnitude. The derivative of \(\[T(t) = \frac{(e^2, 4, e)}{\sqrt{e^4 + 16 + e^2}}\]\).

To find the unit normal vector N(t), we differentiate T(t) with respect to t and normalize the resulting vector. The derivative of T(t) is (0, 0, 0), which means the curve is a straight line. Therefore, N(t) is constant and given by \(\[N(t) = \frac{(-2e^2, 1, 0)}{\sqrt{4e^4 + 1}}\]\).

The normal acceleration ar at t = 2 is the magnitude of the derivative of T(t) with respect to t, which simplifies to \(\[\frac{\sqrt{4e^4 + 1}}{\sqrt{e^4 + 16 + e^2}}\]\).

Since the curve is a straight line, there is no change in the direction of the velocity vector, and therefore, the tangential acceleration aT is zero.

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Answer:

g/ml ,because 1 ml = 1 cm^3

and density unit is g/cm^3.

In a human centrifuge, the resultant normal force on the pilot from the bottom of the seat is nine times the pilot's weight when they pull 9g. The centrifuge has a constant angular acceleration of 1.5 rpm per second until the pilot pulls 9g. The centrifuge then continues with a constant angular velocity.

The question explains that when the aerospace physiologists state that the pilot is pulling 9g, it means that the normal force that acts on the pilot is nine times the pilot's weight. When using a human centrifuge, the centrifuge begins at rest and has a constant angular acceleration of 1.5 rpm per second until the pilot pulls 9g.

After that, the centrifuge maintains a constant angular velocity of 1.5 rpm. The resultant normal force on the pilot from the bottom of the seat is nine times the pilot's weight when they pull 9g. In human centrifuges, 9g's of force are produced on pilots, which aerospace physiologists calculate as the resultant normal force on the pilot from the bottom of the seat.

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These collisions are predicted to create gravitational waves, which gravity wave detectors like LIGO may be able to detect.

In order to discover gravitational waves in the cosmos and develop gravitational-wave observations as an astronomical tool, the Laser Interferometer Gravitational-Wave Observatory (LIGO) was constructed. Two massive observatories were built in the US to search for gravity waves using laser interferometry. These observatories use reflectors that can detect changes as small as one-tenth of a proton's charge diameter at a distance of four kilometres.

The United States National Science Foundation provided funding for the first LIGO observatories (NSF). The NSF has ever supported LIGO, which is the largest and most ambitious project. In 2017, Rainer Weiss, Kip Thorne, and Barry C. Barish were given the Nobel Prize in Physics "for their contributions to the LIGO detector and the observation of gravitational waves."

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The simplified expression for Q using De Morgan's laws is Q = A . (A' . C')'.

a) Truth tables for the NAND gate and NOR gate with two inputs:

NAND gate:

| A | B | Q |

|---|---|---|

| 0 | 0 | 1 |

| 0 | 1 | 1 |

| 1 | 0 | 1 |

| 1 | 1 | 0 |

NOR gate:

| A | B | Q |

|---|---|---|

| 0 | 0 | 1 |

| 0 | 1 | 0 |

| 1 | 0 | 0 |

| 1 | 1 | 0 |

b) Truth table and logic expression for Z in terms of inputs A, B, and C:

| A | B | C | Z |

|---|---|---|---|

| 0 | 0 | 0 | 1 |

| 0 | 0 | 1 | 0 |

| 0 | 1 | 0 | 1 |

| 0 | 1 | 1 | 0 |

| 1 | 0 | 0 | 1 |

| 1 | 0 | 1 | 0 |

| 1 | 1 | 0 | 0 |

| 1 | 1 | 1 | 0 |

Logic expression for Z: Z = (A' AND B' AND C) OR (A' AND B AND C')

c) Simplification of the Boolean expression Q = (A. (A + C))' using De Morgan's laws:

Q = (A. (A + C))'

Apply De Morgan's law: (AB)' = A' + B'

Q = (A' + (A + C)')'

Apply De Morgan's law again: (A + B)' = A' . B'

Q = ((A')' . (A + C)')'

Simplifying the double negations: (A')' = A and (A + C)' = A' . C'

Q = (A . (A' . C'))'

Final simplified expression: Q = A . (A' . C')'

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The energy gained when a 2 kg mass is lifted by 2 m on Jupiter is 100 J.

To calculate the energy gained when a 2 kg mass is lifted by 2 m on Jupiter, we can use the formula:

E = mgh

where E is the energy gained, m is the mass, g is the acceleration due to gravity, and h is the height the object is lifted.

In this case, g = 25 N/kg, m = 2 kg, and h = 2 m. Substituting these values into the formula, we get:

E = (2 kg)(25 N/kg)(2 m) = 100 J

Therefore, the energy gained by Jupiter when a 2 kg mass is lifted by 2 m is 100 J.

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Answer: 5V

Explanation: because 2 goes into 10, five times. Also I know it’s correct cuz I got it right in my quiz

The difference in potential between these two points is 5 V.

The electric potential between two points is the work done in taking a unit postive charge from one point to another.

The difference in potential between these two points is calculated as follows;

W = qV

V = W/q

V = 10/2

V = 5 V

Thus, the difference in potential between these two points is 5 V.

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Answer:

Gallium Arsenine

Explanation:

The frequency is 983.56Hz, will be heard by the occupants of the car moving at the given speed.

What is Frequency?

It is the number of cycles or vibrations a body in periodic motion experiences during one unit of time, as well as the number of waves that pass, a fixed point in a unit of time. After moving through a sequence of situations or locations and then returning to its initial position, a body in periodic motion is said to have experienced one cycle or one vibration.

What are the calculations?

Given,

Speed of train = 28 m/s

Speed of car = 53 m/s

Frequency of car's horn = 580 Hz

Frequency of train's whistle = 340 Hz

When the car is behind the train, the frequency of the car is:

By using formula of frequency =  \(f_{c} = f_{t ( 1 + \frac{V_{c} }{V_{t} } )\)

Put the value into the formula =    \(fc = 340 * (1 + \frac{53}{28} )\)

                                                        \(fc =\) 983.56Hz

Hence, frequency is 983Hz, will be heard by the occupants of the car.

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The gas that makes up most of the Earth's atmosphere is nitrogen (Option A).

Earth's atmosphere is made up of a mix of gases, including nitrogen, oxygen, carbon dioxide, and argon, with trace amounts of other gases. Nitrogen is the most common gas in the Earth's atmosphere, making up about 78% of the total volume. Oxygen is the second-most common gas, accounting for about 21% of the atmosphere. Carbon dioxide, water vapor, and other trace gases make up the remaining 1%. The atmosphere also contains varying amounts of particles such as dust, pollen, and other aerosols.

Thus, the correct option is A.

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Answer:

stress tension tensile strength

Explanation:

The maximum stress which a material can withstand when it is pulled apart is its: stress tension tensile strength.

The object changes direction from 2 s to 9 s because the slope is negative the entire time.

The object's acceleration is indicated by the slope of the velocity-time graph. A change in the slope's sign, from positive to negative or vice versa, denotes a shift in the motion's direction.

A positive slope denotes motion or acceleration in the positive direction, whereas a negative slope denotes motion or acceleration in the opposite direction. As a result, a shift from a positive to a negative slope or vice versa denotes a direction change.

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density = mass/volume

density=16/8

Density=2g/cm^2

Answer:

The input force is the force that when you push down and the output force is the stable going into the paper.

Explanation:

I really hope this helps ;)

Answer: yes

Explanation:

because so

Gases also expand when they are heated and contract when they are cooled. The molecules of a hot gas move faster than the molecules of a cold gas, so they hit each other harder and bounce harder off the sides of a container. This makes the molecules move farther apart and push the sides of a container outward.

Answer: (1a) The magnitude of the centripetal acceleration is 31.4 m/s^2, and the direction is towards the center of the circular motion.

(2a) The astronaut is experiencing 31.4 m/s^2 / 9.8 m/s^2 = 3.22 g's.

(3a) The torque needed to bring the centrifuge to a stop is (5500.0 kg * 31.4 m/s^2 * 20.0 m) = 3,420,000 N * m.

2:

(2a) The period of the pendulum's motion is 0.20 m / 0.10 m/s = 2.0 seconds, and the frequency is 1 / 2.0 s = 0.50 Hz.

(2b) The graphs of velocity and acceleration would be 0.5 seconds out of phase with the displacements shown.

(2c) The acceleration due to gravity on the surface of the planet is 0.10 m/s^2 / 9.8 m/s^2 = 1.02 g's.

Explanation:

Answer:

Protostars

Explanation:

Answer:

number of valence electrons is equal to the atoms main group number.

Explanation:

main group number for an element can be found from its column on the periodic table.

Answer:

Explanation:

m = 4.0 kg

v = 2.0 m/s

g = 10 m/s²

Mechanical energy of the pendulum = 68.0 J

Mechanical energy of the pendulum  = Potential energy of the pendulum  + Kinetic energy of the pendulum

mgh + 1/2 mv² = 68

4 × 10 × h + 1/2 × 4 × 2 × 2 = 68

40 h + 8 = 68

40 h = 68-8

40 h = 60

h = 60 / 40

h = 3/2 m

h = 1.5 m

Answer:

repel , attract,l am sure with these two blanks only

Answer:

Magnetic fields

A magnet creates a magnetic field around it. You cannot see a magnetic field, but you can observe its effects. A force is exerted on a magnetic material brought into a magnetic field. The force is a non-contact force because the magnet and the material do not have to touch each other.