Why can we predict the phases of the moon?

please dont search it up

Answer:

The touch in a circuit is by forming a circuit with the bars, and moving the horseshoe magnet backwards and forwards upon it. Between the two poles a strong current is excited, & on moving the magnet around we magnetize the bars to saturation i.e. to as a high degree as the bar is capable of retaining.

Explanation:

Please give me brainliest! Hope I helped! :)

Answer:

True

Explanation:

Explanation:

its spring

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Answer: thermal energy, mechanical energy and, finally, electrical energy.

Explanation:

As a type of thermal power station, a coal-fired power station converts chemical energy stored in coal successively into thermal energy, mechanical energy and, finally, electrical energy. The coal is usually pulverized and then burned in a pulverized coal-fired boiler.

Answer:

here's your answer below

Explanation:

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.

The buoyant force on the board is equal to the weight of the water displaced by the submerged portion of the board. The weight of the board itself can be found from its volume and density:

Volume of board = length x width x thickness = 3.00 m x 0.200 m x 0.0500 m = 0.03 \(m^3\)

Weight of board = volume x density x gravity = 0.03 m^3 x 300 kg/\(m^3\) x 9.81 \(m/s^2\) = 88.29 N

The buoyant force is equal to the weight of the water displaced:

Buoyant force = weight of water displaced = density of water x volume of water displaced x gravity

The density of water is 1000 kg/\(m^3,\) and the volume of water displaced is equal to the volume of the submerged portion of the board, which can be found from the height of the board above the water level:

Height above water level = 3.00 m - submerged height

Submerged height = density of board x volume of submerged portion / (density of water x width x thickness)

Submerged height = 300 kg/\(m^3\) x V / (1000 kg/\(m^3\) x 0.200 m x 0.0500 m) = 0.09 V

The buoyant force is then:

Buoyant force = 1000 kg/\(m^3\)x 0.09 V x 9.81 \(m/s^2\)= 88.29 N

Since the board is floating partially submerged, the buoyant force is equal to the weight of the submerged portion of the board. The fraction of the board that is above the surface of the water is equal to the ratio of the weight of the submerged portion to the weight of the entire board:

Fraction above water = (weight of board - weight of submerged portion) / weight of board

Fraction above water = (88.29 N - buoyant force) / 88.29 N

Fraction above water = (88.29 N - 88.29 N) / 88.29 N = 0

Therefore, none of the board is above the surface of the water.

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The amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.

Let's start with calculating the amount of energy that the AC unit consumes in a day.

Power = Voltage x Current

The power consumption of the AC unit is 3500 Watts.

Time = Power / Voltage x Current (Ohm's Law)

Assuming that your home uses 120 volts AC, the amount of current needed is as follows:

Current = Power / Voltage

= 3500 W / 120 V

= 29.16 A.

The time required to operate the AC unit for four hours per day is:

Time = Power / Voltage x Current

= 3500 W x 4 hr / 120 V x 29.16 A

= 12 hours.

Now, if you can generate a consistent power of 300 watts on the exercise bike, the amount of time you'd need to work out each day to keep the AC unit running for four hours would be:

Time required for the exercise bike = Time for AC Unit x (Power required by AC unit / Power generated by exercise bike)

Time required for the exercise bike = 4 hours x (3500 W / 300 W)

Time required for the exercise bike = 46.7 hours.

Using an exercise bike to generate electricity is a great idea, but it would be difficult to generate enough energy to keep large home appliances running, such as a central AC unit.

In this case, the amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.

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Answer:

Descriptive investigation, comparative investigation, and experimental investigation.

Explanation:

Scientists use three types of investigations to research and develop explanations for events in the nature: descriptive investigation, comparative investigation, and experimental investigation.

The net force acting on the car is 65 N to the left

The net force acting on an object is simply defined as the resultant force acting on the object.

From the question given, we obtained the following data:

The net force acting on the car can be obtained as follow:

Fₙ = Fₗ – Fᵣ

Fₙ = 315 – 250

Therefore, the net force acting on the car is 65 N to the left

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Since there is no friction, the net force on the car in the x - direction will be 65 Newtons

Given that Dave and Alex push on opposite ends of a car that has a mass of 875 kg.

Dave pushes the car to the right with a force of 250 N, which is positive direction and Alex pushes to the left with a force of 315 N which is negative direction. Since there is no friction, only the horizontal forces will be considered.

To calculate the net force on the car in the x-direction, we will find the difference between the two forces because of their directions are opposite to each other.

Net force = 315 - 250

Net force = 65 Newtons

Therefore, the net force on the car in the x - direction will be 65 Newtons

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Answer:

True

Explanation:

because if your body image is negative your holistic health is will affect

The final momentum of the skater is 3.77 m/s.

Momentum is the product of mass and acceleration. Recall that the principle of conservation of linear momentum states that total momentum before collision must equal the total momentum after collision.

Thus;

(50 Kg × 0 m/s) + (55Kg ×  7.2m/s) = (50 Kg + 55Kg) v

v =  (55Kg ×  7.2m/s)/(50 Kg + 55Kg)

v = 396/105

v = 3.77 m/s

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Answer:

(a) The list of angles based on amount of time in the air; 15° < 25° < 45° < 60°, < 80°

(b) The list of angles based on distance = 80° < 15° < 25° < 60° < 45°

Explanation:

(a) The given parameters are;

The angles in which the ball is thrown, θ = 45°, 15°, 60°, 25°, and 80°

The velocity with which the ball is thrown each time = The same velocity

The amount of time the projectile is in the air given as follows;

\(2 \cdot t = \dfrac{2\cdot u \cdot sin (\theta) }{g}\)

Where;

t = Half the amount of time the projectile is in the air

θ = The angle of flight of the projectile

u = The initial velocity of the projectile = Constant for all angles in which the ball is thrown

g = The acceleration due to gravity = 9.8 m/s² = Constant

Therefore, we have;

When θ = 45°;

\(2 \cdot t = \dfrac{2\cdot u \cdot sin (45^ {\circ}) }{g} = \dfrac{2\cdot u \cdot \dfrac{\sqrt{2} }{2} }{g} = \dfrac{\sqrt{2} \cdot u }{g}\)

When θ = 15°;

\(2 \cdot t = \dfrac{2\cdot u \cdot sin (15^ {\circ}) }{g} \approx \dfrac{0.517638\cdot u }{g}\)

When θ = 60°;

\(2 \cdot t = \dfrac{2\cdot u \cdot sin (60^ {\circ}) }{g} = \dfrac{2\cdot u \cdot \dfrac{\sqrt{3} }{2} }{g} = \dfrac{\sqrt{3} \cdot u }{g}\)

When θ = 25°;

\(2 \cdot t = \dfrac{2\cdot u \cdot sin (25^ {\circ}) }{g} = \dfrac{0.8452365\cdot u }{g}\)

When θ = 80°;

\(2 \cdot t = \dfrac{2\cdot u \cdot sin (80^ {\circ}) }{g} = \dfrac{1.9696155\cdot u }{g}\)

Therefore, the list of the angles based on the amount of time in the air from the shortest time to the longest time is given as follows;

List of angles based on amount of time in the air; 15° < 25° < 45° < 60°, < 80°

(b) The horizontal range, R is given as follows;

\(R = \dfrac{u^2 \cdot sin(2 \cdot \theta) }{g}\)

When θ = 45°

\(R = \dfrac{u^2 \cdot sin(2 \times 45 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(90 ^{\circ}) }{g} = \dfrac{u^2 }{g}\)

When θ = 15°

\(R = \dfrac{u^2 \cdot sin(2 \times 15 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(30 ^{\circ}) }{g} = \dfrac{1}{2} \cdot \dfrac{u^2 }{g} = 0.5 \cdot \dfrac{u^2 }{g}\)

When θ = 60°;

\(R = \dfrac{u^2 \cdot sin(2 \times 60 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(120 ^{\circ}) }{g} = \dfrac{u^2 }{g} \cdot \dfrac{\sqrt{3} }{2} =0.866025 \cdot \dfrac{u^2 }{g}\)

When θ = 25°;

\(R = \dfrac{u^2 \cdot sin(2 \times 25 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(50 ^{\circ}) }{g} = \dfrac{0.7660444 \cdot u^2 }{g}\)

When θ = 80°

\(R = \dfrac{u^2 \cdot sin(2 \times 80 ^{\circ}) }{g} = \dfrac{u^2 \cdot sin(160 ^{\circ}) }{g} = \dfrac{0.34202 \cdot u^2 }{g}\)

Therefore the list of angles based on the horizontal range the baseball travels from the shortest distance to the longest distance is given as follows;

List of angles based on distance = 80° < 15° < 25° < 60° < 45°.

What does your model look like and the one it's being compared to?

Answer:

you should prolly put the model

Explanation:

The condition when brakes overheat and lose their effectiveness is called "brake fade."

When brakes overheat, the friction material can start to break down, and the brake system can lose its ability to effectively slow or stop the vehicle. This condition is called brake fade. Brake fade can be caused by several factors, such as prolonged or heavy braking, a lack of airflow to the brakes, or using brakes that are not properly sized or rated for the vehicle.

When experiencing brake fade, it is important to slow down gradually and safely and allow the brakes to cool off before attempting to use them again. Regular brake maintenance, including replacing worn brake pads and rotors and keeping the brake fluid at the proper level and condition, can help prevent brake fade and ensure safe and effective braking performance.

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If you see a displayed diver-down flag while boating, it is necessary to maintain a certain distance from the flag for safety reasons. The specific distance may vary depending on local regulations and circumstances, but it is generally recommended to stay at least 100 feet away from the flag.

A diver-down flag is used to indicate the presence of divers in the water. Its purpose is to alert boaters to the potential hazards and to ensure the safety of the divers. The exact distance you must stay away from the flag may be specified by local laws or regulations, so it is important to familiarize yourself with the rules of the area you are boating in.

In many places, a common guideline is to stay at least 100 feet away from the diver-down flag. This distance allows for a safe buffer zone to prevent any accidental collisions or disturbances to the divers. However, it's crucial to check and adhere to the specific regulations in your boating location, as they may vary and could require a different distance to be maintained. Prioritizing safety and respecting the presence of divers is essential to avoid any accidents or harm to both boaters and divers.

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Answer:

3.42 + 4 + 5.2 + 12= 24.62
So since we have 24.62 it will be 4 sig figs

Explanation:

The acceleration due to gravity of the planet X is 1 m/s².

The given parameters;

The acceleration due to gravity is calculated as follows;

\(h = ut - \frac{1}{2} gt^2\\\\100 = 15(10) - (0.5\times 10^2)g\\\\100 = 150 - 50g\\\\50g = 150-100\\\\50g = 50\\\\g = 1 \ m/s^2\)

Thus, the acceleration due to gravity of the planet X is 1 m/s²

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Answer:

Explanation:

In chemistry, the term transition metal has three possible definitions: The IUPAC definition defines a transition metal as "an element whose atom has a partially filled d sub-shell, or which can give rise to cations with an incomplete d sub-shell".

Answer:

Transition elements (also known as transition metals)

Explanation:

are elements that have partially filled d orbitals. IUPAC defines transition elements as an element having a d subshell that is partially filled with electrons, or an element that has the ability to form stable cations with an incompletely filled d orbital.

Plane used to remove the tip of your nose is known to be called option C. Frontal (front/back).

In regards to biology, If a person were to cut their nose off, it is one that is known to be called coronal.

The coronal plane is said to be a term that is often referred to as the frontal plane and it is seen as any vertical plane that shares the body into ventral as well as dorsal (belly and back) parts.

Therefore one can say that the coronal Plane (Frontal plane) used to remove the tip of your nose.

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Answer:

The Interpretation of Dreams": Freud noticed that dreams played an important role in his analysis of neurotic and "hysterical" patients. When he asked his patients to talk about whatever came into their minds, they often referred to their dreams, which would set off other associations and often illuminate other important connections in their past experience. It took Freud about two years to write the book, finishing it in September 1897.

No, SCID is not a deletion mutation.

The AK2 gene, which codes for the mitochondrial enzyme adenylate kinase 2 (AK2), is mutated (missense mutations; deletions) in SCID, which is brought on by an increase in lymphocyte apoptosis [75,76]. A category of extremely rare diseases known as severe combined immunodeficiency (SCID) are brought on by abnormalities in various genes involved in the growth and operation of immune cells that fight infections. At birth, infants with SCID seem healthy, yet they are prone to serious infections.

Due to mutations in the gene encoding the common chain for several cytokine receptors, X-linked SCID is the most prevalent kind. Adenosine deaminase deficiency (ADA def.) and IL-7R-chain deficiency are the second and third most frequent causes, respectively.

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In Fahrenheit, 176 degrees are equal to 80 degrees Celsius.

In honour of physicist Daniel Gabriel Fahrenheit, a temperature scale is named Fahrenheit. At standard air pressure, it measures temperature using water at 32°F for the freezing point and 212°F for the boiling point.

The formula is  F = (C * 9/5) + 32, where F is the temperature in Fahrenheit and C is the temperature in Celsius, can be used to convert a temperature from Celsius to Fahrenheit.

It is significant to observe that there is not an equal difference between each temperature increment on the two scales. One degree Celsius is equal to 1.8 degrees Fahrenheit. As a result, a temperature change from 20°C to 21°C is similar to one from 68°F to 69.8°F.

In conclusion, translating 80°C to 176°F allows us to better appreciate its significance on the Fahrenheit scale.

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Answer: Friction is the resistance to motion of one object moving relative to another. For example, when you try to push a book along the floor, friction makes this difficult. Force: Force is essentially a push, or a pull action, that can lead to certain outcomes.

Answer:

displacement, acceleration, potential energy

Explanation:

pretty sure this is correct but dont hold me to it.

The set of three that can have maximum magnitudes at the same instant of time will be displacement, acceleration, and potential energy.

Simple harmonic motion is periodic motion caused by a restoring force that is proportionate to the deviation from equilibrium.

Simple harmonic motion is periodic motion but many other conditions are dependent.

The object is in simple harmonic motion of the following quantities related to the object.

The set of three that can have maximum magnitudes at the same instant of time will be displacement, acceleration, and potential energy.

Hence the set of three quantities is the options i, iii,v.

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Answer:

Explanation:

Seismograph is an instrument that measures and records details of earthquakes

How does it work???

The instrument is simply a vibrating rod, or a pendulum, which

starts vibrating when tremors occur. A pen is attached to the vibrating system.

The pen records the seismic waves on a paper which moves under it. By studying

these waves, scientists can construct a complete map of the earthquake

According to the given statement , the fluid relative velocity at the interface between the two plates is approximately 0.684 m/s.

To find the fluid relative velocity at the interface between the two plates, we can use the concept of shear rate and the formula for the velocity gradient.

First, let's calculate the shear rate (γ) using the formula:

γ = Δv / Δx

Where:
- Δv is the velocity difference between the two plates, which is given as 1.3 m/s (since the upper plate has a speed of 1.3 m/s at the interface).
- Δx is the distance between the two plates, which is the sum of the thicknesses of the two fluid layers:

Δx = L1 + L2.

Given that L1 = 0.62 mm and L2 = 0.56 mm, we need to convert these values to meters:

L1 = 0.62 mm = 0.62 × 10⁻³ m
L2 = 0.56 mm = 0.56 × 10⁻³ m

Now we can calculate Δx:

Δx = L1 + L2

Substituting the values, we get:

Δx = 0.62 × 10⁻³ m + 0.56 × 10⁻³ m
   = 1.18 × 10⁻³ m

Now we can calculate the shear rate:

γ = Δv / Δx
  = 1.3 m/s / 1.18 × 10⁻³ m

Performing the division, we find:

γ ≈ 1101.7 s^-1

The shear rate (γ) represents the velocity gradient between the two fluid layers. To find the fluid relative velocity at the interface, we need to multiply the shear rate by the thickness of the first layer (L1).

Relative Velocity = γ * L1

Substituting the values, we get:

Relative Velocity = 1101.7 s⁻¹ * 0.62 × 10⁻³ m

Performing the multiplication, we find:

Relative Velocity ≈ 0.684 m/s

Therefore, the fluid relative velocity at the interface between the two plates is approximately 0.684 m/s.

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The mohorovicic discontinuity is the Boundary where the crust gives way to the mantle

What is Mohorovicic discontinuity ?

The line separating the Earth's crust and mantle is known as the Moho discontinuity. Because it was found by a Croatian scientist named Andreaja Mohorovicic, it retains that name. Within the (lithospheric) plate, this boundary denotes a change in seismic wave velocity from the crust to the uppermost mantle. The surface that separates the earth's crust from its mantle, located roughly 24 to 30 miles (40 to 50 km) below the continents and 6-7 miles (10 to 12 km) below the ocean floor.

According to the above definition

We get to know that

The mohorovicic discontinuity is the Boundary where the crust gives way to the mantle

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