Danny drew a ray diagram to show the image of a plastic bottle produced by a concave lens. Which describes how the bottle should appear in the diagram? The image of the bottle should appear larger than the actual bottle. The image of the bottle should be upside down compared to the actual bottle. The actual bottle should appear larger than the image of the bottle. The actual bottle should be upside down compared to the image of the bottle.

Answer:

The acceleration will decrease/reduce

Explanation:

Newton in his second law of motion states that the acceleration of an object is dependent on the force and mass applied on the object. Using the equation as follows:

F = m × a

Where;

F = force (N)

m = mass (kg)

a = acceleration (m/s²)

Acceleration (a) is directly proportional to the force (F) applied but inversely proportional to the mass (m).

According to this question, a friend drops 50 pounds of dog food into a cart being pushed with speed. This means that the mass/weight of the cart was increased. Since the acceleration is inversely proportional to the mass of an object, this means that the acceleration of the cart will DECREASE/REDUCE as the mass increases.

An athlete weighs 175 pounds and is on a 3,000kcal diet. What is the minimum amount of fat that he/she should consume daily?The athlete weighs 175 pounds, which is 79.4 kilograms (kg).

The minimum amount of fat he/she should consume daily is 52 grams. The formula to calculate the minimum amount of fat required is

\(Minimum fat (grams) = (minimum daily fat percentage / 100) × daily calorie intake (kcal) / 9.\)

We are given that the athlete is on a 3,000kcal diet, but we do not know the minimum daily fat percentage. It is recommended that athletes consume between 20-35% of their total calories from fat, with a minimum of 20% to prevent deficiencies. Using the minimum recommended daily fat percentage of 20%, we can calculate the minimum amount of fat required as follows:

\(Minimum fat (grams) = (20 / 100) × 3,000 / 9= 600 / 9= 66.67 gram.\)

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Answer: He's a superhero in a fictional world

Explanation: Superheroes, such as Superman and Flash, defy physics because they were created as a form of entertainment. The DC world isn't realistic. Don't think too much on it.

Answer:

an open circuit (A battery, bulb, wire,switch)

Explanation:

the battery supplies the power the wire carries the current from the battery to the bulb but the circuit is not completed if the switch is not connected (Switch )

When a switch is closed, the electrons from the battery will reach the bulb at the speed of light or 299,792,458 meters per second. So, it will take approximately 3.34 x \(10^{-9}\) seconds for electrons from the battery to reach the bulb.

Electric current is the flow of electric charges. The flow of electric charges through a circuit is known as current. It is defined as the rate of flow of electric charges through a conductor. The SI unit of electric current is Ampere (A). Electric charge is a fundamental property of matter that results from an imbalance in the number of protons and electrons present in an atom or molecule. When the number of electrons is more than the number of protons, an atom or molecule is said to be negatively charged.

On the other hand, when the number of electrons is less than the number of protons, an atom or molecule is said to be positively charged. Electric potential is the work done per unit charge by an external force in moving a positive charge from infinity to a point in the electric field. The electric potential difference between two points in an electric field is the work done per unit charge by an external force in moving a positive charge from one point to another in the electric field.

The SI unit of electric potential difference is also volt (V). Therefore, , it will take approximately 3.34 x \(10^{-9}\) seconds for electrons from the battery to reach the bulb.

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Answer:

watts

Explanation:

Answer:

its a.) watts

Explanation:

The statement "Gas tungsten arc welding was developed to weld magnesium and aluminum on world war ii fighter planes" is a TRUE statement.

Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, was developed in the 1930s and 1940s to weld magnesium and aluminum on World War II fighter planes. This welding process uses a non-consumable tungsten electrode, an inert gas (usually argon), and a filler metal to create strong and precise welds.

GTAW is most commonly used to weld thin sections of stainless steel and non-ferrous metals such as aluminum, magnesium, and copper alloys. The process grants the operator greater control over the weld than competing processes such as shielded metal arc welding and gas metal arc welding, allowing for stronger, higher quality welds.

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Answer:

A. crushing the solid .

Answer:

A.) crushing the solid

Answer:

Data from a cross-sectional study or survey might need to incorporate weights or design effects in the analysis.The analysis plan should specify which variables are most

Explanation:

Explanation:

For example, scientists on a ship may examine SONAR data collected in real-time to determine the shape of the seafloor (Fig 2.7 A). ... Biologists might graph the number of box jellyfish over time and compare these data to the phases of the moon to look for patterns (Fig 2.7 B).

I believe this question refers to the extremely charged nature of his model. The world in his day was almost completely controlled by the Catholic Church. His heliocentric model suggested that the earth was not, indeed, the centeer of the universe, and Catholic officials and clergy took this to be a dirrect attack on the priveleged place they believed man held in God's plan.

Answer:

Peter and John is a plate of rice together peterhead 2/5 of the quantity of rice white drone x 1/3 who ate more food than the other

Answer:

Gravitational field strength =weight/mass

Explanation:

14.8N/4.0kg

3.7N/kg

Answer:B. A segment of a DNA molecule

Explanation:

Answer:

F/L = μ₀I₁I₂/2πr

when a force of 2 x 10⁻⁷ N is produced between two conductors 1 m apart from each other and having a cross-sectional radius 1 m. The current on each conductor in this situation is 1 Ampere

Explanation:

Consider two conductors of same length parallel to each other. The Magnetic field due to current in 1st conductor is given by Ampere's Law as:

B₁ = μ₀I₁/2πr

where,

B₁ = Magnetic Field due to Conductor 1

μ₀ = permeability of free space = 4π x 10⁻⁷ N/A²

I₁ = Current through conductor 1

r = radius of cross section of conductor

Now, the force of the conductors on each other is given by:

F₁₂ = B₁I₂L

where,

F₁₂ = Force of conductor 1 on conductor 2

B₁ = Magnetic Field of Conductor 1

I₂ = Current through conductor 2

L = Length

Therefore,

F₁₂ = μ₀I₁I₂L/2πr

The force of conductor 2 on conductor will also have same magnitude but opposite direction:

F₁₂ = |- F₂₁| = F

F/L = μ₀I₁I₂/2πr

F/L = μ₀I₁I₂L/2πr

Now, to define S.I unit of current (Ampere) we substitute values:

F/(1 m) = (4π x 10⁻⁷ N/A²)(1 A)(1 A)/2π(1 m)

F = 2 x 10⁻⁷ N

So, when a force of 2 x 10⁻⁷ N is produced between two conductors 1 m apart from each other and having a cross-sectional radius 1 m. The current on each conductor in this situation is 1 Ampere

The asteroid's escape velocity is E 890 m/s. The correct option is E) 890 m/s

To calculate the asteroid's escape velocity, we can use the formula:

escape velocity = √(2 * gravitational constant * mass / radius)

However, we don't know the mass of the asteroid. But we can use the fact that the gravitational acceleration at the surface is 2.0 m/s² to calculate the mass using:

gravitational acceleration = gravitational constant * mass / radius²

Rearranging this equation to solve for mass, we get:

mass = gravitational acceleration * radius² / gravitational constant

Plugging in the values given, we get:

mass = 2.0 m/s² * (400 km * 1000 m/km)² / (6.674 × 10⁻¹¹ m³/kg/s²) = 3.81 x 10¹⁵ kg

Now we can use this mass value to calculate the escape velocity:

escape velocity = √(2 * gravitational constant * mass / radius)
escape velocity =√(2 * 6.674 × 10⁻¹¹ m³/kg/s² * 3.81 x 10¹⁵kg / 400 km * 1000 m/km)
escape velocity = 891 m/s

Therefore, the correct option is E) 890 m/s.

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An intensity level change of 2.00 dB corresponds to an approximate 58.87% increase in intensity.

The relationship between intensity level (in decibels) and intensity (in watts per square meter) can be expressed using the decibel formula: ΔL = 10 * log10(I2/I1), where ΔL is the change in intensity level (in decibels), and I1 and I2 are the initial and final intensities, respectively.

In this case, the intensity level change is given as 2.00 dB. To find the percentage change in intensity, we need to first find the ratio I2/I1. Rearranging the decibel formula, we have:

I2/I1 = 10^(ΔL/10)
I2/I1 = 10^(2.00/10)
I2/I1 ≈ 1.585

This means that the final intensity (I2) is approximately 1.585 times greater than the initial intensity (I1). To express this as a percentage change, we can subtract 1 from the ratio and multiply the result by 100:

Percentage change in intensity ≈ (1.585 - 1) * 100 ≈ 0.585 * 100 ≈ 58.87%

Thus, an intensity level change of 2.00 dB corresponds to an approximate 58.87% increase in intensity.

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a) The number of turns in the solenoid is approximately 206.

To determine the number of turns in the solenoid, we can use the formula for the magnetic field inside a solenoid, which is given by B = μ₀nI, where B is the magnetic field, μ₀ is the permeability of free space, n is the number of turns per unit length, and I is the current.

Rearranging the formula, we have n = B / (μ₀I). Substituting the given values of B = 9.00 T and I = 75.0 A, and using the value of μ₀, we can calculate the number of turns per unit length. Multiplying it by the length of the solenoid (0.500 m) gives us the total number of turns in the solenoid, which is approximately 206.

A solenoid is a coil of wire wound in a helical shape. When a current flows through the coils, it creates a magnetic field along the axis of the solenoid. The strength of the magnetic field depends on factors such as the number of turns per unit length and the current flowing through the solenoid.

In this case, we are given the magnetic field and current, and we use the formula for the magnetic field inside a solenoid to calculate the number of turns. The higher the number of turns, the stronger the magnetic field generated by the solenoid.

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Answer:  

C) Plane 1 has more kinetic energy and plane 2 has more potential energy.

Explanation:

he potential energy of an object is determined by its height above a reference level and its mass, while the kinetic energy of an object is determined by its mass and speed.

In this scenario, plane 1 has a higher speed than plane 2, but it is flying at a lower height. On the other hand, plane 2 is flying at a higher height, but it has a lower speed. Since the planes have different heights, they have different potential energies.

Therefore, the correct statement is: C) Plane 1 has more kinetic energy and plane 2 has more potential energy.

Answer:  

C) Plane 1 has more kinetic energy and plane 2 has more potential energy.

Explanation:

he potential energy of an object is determined by its height above a reference level and its mass, while the kinetic energy of an object is determined by its mass and speed.

In this scenario, plane 1 has a higher speed than plane 2, but it is flying at a lower height. On the other hand, plane 2 is flying at a higher height, but it has a lower speed. Since the planes have different heights, they have different potential energies.

Therefore, the correct statement is: C) Plane 1 has more kinetic energy and plane 2 has more potential energy

The vertical reaction of the space craft on the astronaut is 5mg.

The vertical reaction of the space craft on the astronaut is calculated by applying Newton's second law of motion as shown below.

F = mg

where;

The vertical reaction of the space craft on the astronaut is calculated as;

F = m x 5g

F = 5mg

Thus, the vertical reaction of the space craft on the astronaut is equal to the weight of the astronaut exerted downwards.

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Answer:

The number of protons is correct

Answer:

The number of protons

Explanation:

I took the test buddy boy

The example that is NOT an example of Simple Harmonic Motion is:

A ball rolling down a hill.

Simple Harmonic Motion is a type of periodic motion where the restoring force is proportional to the displacement from equilibrium and is directed towards the equilibrium point. The classic example of simple harmonic motion is the motion of a mass attached to a spring that is oscillating back and forth. Other examples of simple harmonic motion include a pendulum swinging back and forth and the vibration of a guitar string.

A ball rolling down a hill does not exhibit simple harmonic motion because it does not have a restoring force that is proportional to the displacement from equilibrium. The motion of the ball is affected by the force of gravity, which is not directed towards the equilibrium point, and the frictional force between the ball and the surface of the hill, which is not proportional to the displacement from equilibrium. Therefore, it is not an example of simple harmonic motion.

Answer:

Inelastic

Explanation:

The price elasticity of demand is the degree of responsiveness of demand for a product or service to a unit change in price. The demand for a product is said to be elastic when a change in price has a relatively large effect on the demand for the product, unitary when there is a percentage change in price brings about an equal percentage change in the demand for the product, and inelastic when a change in the price of a product brings about a smaller change in the demand for the product.

In the case of the DVD rentals, a 10% increase in price brought about only a 5% drop in demand. Hence, the demand for DVD rentals is said to be inelastic because a change in the price brought about a smaller change in the demand for DVD rentals.

Answer:

\(Vg=200mile/hr\)

\(\theta=153 \textdegree\)

Explanation:

From the question we are told that:

Plane airspeed \(v_p=190mil/h\)

Plane direction \(\angle=150 \textdegree\)

Wind current speed \(V_w=30mil/h\)

Wind direction \(\angle=150 \textdegree\)

Generally the vector form of the forces is mathematically given by

For plane

\(\angle Q_p=90-150 \textdegree\)

\(V_p=170(cos60 \textdegree ,sin60 \textdegree)\)

\(V_p=(85,-147.224)\)

For wind

\(\angle Q_w=90-170 \textdegree\)

\(V_w=30(cos-80 \textdegree ,sin-80 \textdegree)\)

\(V_w=(5.2,-29.54)\)

Generally the equation for resultant force is mathematically given by

\(v_r=V_a+V_w\)

\(v_r=(85,-147.224)+(5.2,-29.54)\)

\(v_r=(90.21,-176.76)\)

\(v_r=198.45\angle -63\)

Therefore ground speed

\(V_g=198.5miles/hr\)

\(Vg=200mile/hr\)

Direction

\(\theta=(90+63)=153 \textdegree\)

\(\theta=153 \textdegree\)

The plane travels a distance of 325 miles if the airplane travels for 2.5 hours at an average speed of 130 miles per hour. Using the distance formula (d = rt), we can calculate the distance.

To find the distance traveled by the airplane, we can use the distance formula, which is represented as d = rt. In this formula, "d" represents the distance, "r" represents the rate or speed at which the object is traveling, and "t" represents the time taken for the travel.

Given that the airplane travels for 2.5 hours at an average rate of 130 miles per hour, we can substitute these values into the formula. The rate of the airplane is 130 miles per hour, and the time taken is 2.5 hours.

Using the formula, we can calculate the distance traveled as follows:

d = rt

d = 130 mph × 2.5 hours

Multiplying the rate (130 mph) by the time (2.5 hours) gives us:

d = 325 miles

Therefore, the airplane travels a distance of 325 miles during the 2.5 hours of travel at an average rate of 130 miles per hour.

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Answer:

They are made of one type of atom.

Explanation:

Answer:

The answer is A

Explanation:

Using Runge-Kutta 2nd order Heun's method, the speed (w) at t = 0.8s is approximately 0.0081.

Given:

Voltage input (V) = 30V

Initial speed (w) = 0

Step size (h) = 0.4s

Time at which speed is to be determined (t) = 0.8s

We need to determine the speed (w) at t = 0.8s using Heun's method.

We have k₁ = f(t₁, W₁) = 0.02 + 0.06w₁ (using the given equation)

At t = 0 and w = 0 (initial conditions), we have:

k₁ = 0.02 + 0.06(0) = 0.02

We have k₂ = f(t₁ + h, w₁ + k₁h) = 0.02 + 0.06(w₁ + 0.02h)

So, at t = 0.4s and w = 0 (initial conditions), we have:

k₂ = 0.02 + 0.06(0.02 * 0.4) = 0.02 + 0.00048 = 0.02048

So, W₂ = w₁ + (k₁ + k₂)(h/2)

   = 0 + (0.02 + 0.02048)(0.4/2)

   = 0.04048(0.2)

   = 0.008096

Therefore, using Runge-Kutta 2nd order Heun's method, the speed (w) at t = 0.8s is approximately 0.0081.

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The complete question is:

The speed of a motor supplied with a voltage input of 30V, assuming the system is without damping, can be expressed as 30 = (0.02)+(0.06)w dt If the initial speed is zero and a step size of h = 0.4 s, determine the speed w at t = 0.8 s by using the Runge-Kutta 2nd order Heun's method. Heun's method: Wi+1=W₁ = w₁ + (-/-^₁ + = -K ₂ ) h where, k₁ = f(t₁, W₁) and k₂ = f(t₁ + h, w₁ + k₁h), the speed (w) at t = 0.8s is approximately 0.0081.

Waves are considered no longer deep water waves and become shallow water waves when the water depth is approximately equal to half the wavelength.

The classification of waves as deep water waves or shallow water waves depends on the ratio between the water depth (d) and the wavelength (λ) of the waves.

In deep water, the water depth is significantly larger than the wavelength, and the motion of the waves is not influenced by the seabed. Deep water waves exhibit characteristic properties, such as a circular orbital motion of water particles and a dispersion relationship where the wave speed is proportional to the wavelength.

As the water depth decreases and approaches half the wavelength, the waves enter a transitional region known as intermediate water. In this region, the waves exhibit a combination of deep water and shallow water characteristics.

When the water depth becomes approximately equal to half the wavelength, the waves are considered shallow water waves. In this case, the motion of the waves is affected by the seabed, and the waves undergo significant changes in shape and behavior. Shallow water waves have elliptical orbits, with the bottom of the wave interacting with the seabed, causing the wave speed to decrease and the wave height to increase.

Therefore, the depth at which waves transition from deep water waves to shallow water waves is approximately half the wavelength.

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