A bicycle has a mass of 10kg and an acceleration of 2m/s². What is the net force of the bicycle?

20 m/s
20 m/s

5 N
5 N

0.2 m/s
0.2 m/s

20 N

Answer: A. When half the parent nuclei in a sample have become daughter nuclei

Explanation:

There are several considerations when comparing regular lenses and sunglasses, including their primary functions, lens properties, and intended usage.

Protection from sunlight: Sunglasses are primarily designed to protect the eyes from harmful UV rays and intense sunlight. They have specialized lens coatings that block a significant amount of UV radiation. Regular lenses, on the other hand, may not offer the same level of UV protection unless specifically designed for it.

Glare reduction: Sunglasses are often equipped with polarized lenses that reduce glare caused by reflected light from surfaces such as water, snow, or roads.

This feature is particularly useful for outdoor activities like driving, skiing, or water sports. Regular lenses typically lack polarization, so they don't provide the same level of glare reduction.

Tint and visibility: Sunglasses have different tint options to enhance contrast, reduce brightness, or provide specific color filtering. These tints can improve visual comfort in different lighting conditions. Regular lenses, however, are usually clear and transparent, providing natural color perception.

Fashion and style: Sunglasses are often chosen for their aesthetic appeal and fashion statement. They come in various designs, shapes, and colors to complement different face shapes and personal styles. Regular lenses, on the other hand, are more focused on functionality and may not have as wide a range of fashionable options.

In terms of preference, it depends on the specific needs and activities of the individual. If protection from UV rays and glare reduction are important, sunglasses with appropriate coatings and polarized lenses would be preferred.

For regular daily activities that don't involve intense sunlight, regular lenses may suffice, especially if UV protection is not a primary concern. Fashion and personal style also play a role in the preference for sunglasses as they can be a fashionable accessory.

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The net force is (40 Newtons) (down the road).

But 40 Newtons is not going to move a piano very enthusiastically.

Answer:

Hope it helps

Brainliest po

a is right answer

Frequency of the waves increases as the student dips his foot faster.

What is frequency?

Frequency is a measure of how often something occurs over a given period of time. It can be used to measure the rate of events, such as the number of times a sound or light wave occurs in a given second. Frequency is measured in hertz (Hz), which is the number of occurrences per second. Frequency can also refer to the number of times a certain event occurs in a given sample size, such as the number of times a person visits a website in a month. It is a common measure used in statistics and is often used to compare data sets.

Therefore, Frequency of the waves increases as the student dips his foot faster.

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(a) The current through the 60.0-Ω resistor at that instant is 0.2 A.

(b) As there is no change in current initially, the potential difference across the 15.0-mH inductor will be zero at that instant.

(c) The potential drop across the 60.0-Ω resistor, after the switch has been closed for a long time, will be 12 V.

(a) The instant after closing the switch, inductors resist changes in current. Initially, when the switch is closed, the inductor acts as if it has no effect on the circuit.

Therefore, the current through the circuit will be determined solely by the resistor. Using Ohm's Law (V = IR),

I = V / R

= 12 V / 60.0 Ω

= 0.2 A

(b) The instant after closing the switch, the potential difference across an inductor is determined by the rate of change of current.

Since the switch has just been closed, there is no change in current, and the potential difference across the inductor is initially zero.

V = L × dI/dt

(c) After the switch has been closed and left closed for a very long time, inductors act as short circuits in DC circuits. This means that they effectively have zero resistance. The potential drop across the 60.0-Ω resistor will be the same as the applied voltage of 12 V.

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Answer:

Yellow

Explanation:

So while red, green and blue light shine upon the shirt, only red and green light will reflect from it. Red and green light striking your eye always gives the appearance of yellow; for this reason, the shirt will appear yellow.

Answer:

lol girly same

Explanation:

Answer:

speed

Explanation:

Change in velocity, not velocity, is used to calculate the average acceleration. Velocity is displacement over time.

It is defined as the ratio of change in velocity to time. It is given by:

Acceleration= Change in velocity / time

a= u-v / t

where,

u= initial velocity

v= final velocity

t= time

Thus, we can conclude that a change in velocity is used to calculate average acceleration.

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The answer is Heat. Energy conversion processes always produce heat.

Heat is the transfer of energy from one object to another, due to the difference in temperature.

This can happen when two objects come into contact, or when energy is transformed into another form such as light or sound.

Light is produced when energy is transformed from one form to another, but is not always produced in energy conversion processes. Sound, electrical polarization and gamma rays are not always produced either.

In energy conversion processes, the energy is usually converted from one form to another. This can involve chemical reactions, burning, or other transformations.

In these cases, the energy is released as heat. This is because, as energy is transferred, some energy is always lost as heat.

Heat is important because it is the energy that drives many of the processes in the world around us. For example, plants use the energy from the sun to convert carbon dioxide and water into food.

Animals use this food to produce energy, and this energy is then released as heat.

Heat is always produced as a result of an energy conversion process. Heat is important because it is the energy that drives many processes in the world around us.

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Well spring magma and  groundwater must be interacting beneath the surface which is why they geyser is erupting.

A scientist observes a geyser erupting. The two objects that must be interacting beneath the surface are well spring magma and groundwater.

When a geyser is erupting, it involves the interaction of groundwater and well spring magma. The groundwater seeps into the earth's crust, where it gets heated by the well spring magma. Once the water reaches a certain temperature, it turns into steam and expands, causing pressure to build up. Eventually, this pressure forces the heated water and steam to the surface, resulting in the eruption of the geyser.

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The mass of the oxygen gas in the oxygen container is found to be 14 grams.

The volume of the oxygen container is 20L and the pressure of the container at 23 degree Celsius is 876 mmHg.

From the ideal gas equation,

PV = W/MRT

Where,

P is pressure,

V is volume,

M is the molar mass,

W is the actual mass,

R is the gas constant,

T is the temperature.

Putting values,

876 x 20 = W/16 x 62.36 x 300

W = 14 grams.

So, the mass of the oxygen gas in the container is 14 grams.

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Fringe Width is the distance between two maxima of the next order on one side of the central maxima.

The distance between two fringes can be calculated by β=λDd where β represents fringe width, λ represents wavelength, D represents the distance between slit and screen, and represents the distance between two slits. The fringe width depends on the wavelength of light, the distance between the slits, and slit separation.

The bright (constructive interference) fringes are at maximum intensity and the dark (destructive interference) fringes are at minimum intensity. Fringe is the alternating light and dark band that forms due to interference. Fringe width is the distance between two successive bright or dark fringes.

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Initial velocity U = 0

Final velocity V = 32.23 m/s

Explanation:

Given that a coin is dropped from the top of the Tower of Pisa, 53m above the ground.

What is the coin's initial velocity ?

Since the coin is dropped from the tower, the initial velocity U will be equal to zero.

Therefore, U = 0

But the final velocity V will be calculated by using the formula

V^2 = U^2 + 2gH

V^2 = 0 + 2 × 9.8 × 53

V^2 = 1038.8

V = sqrt ( 1038.8)

V = 32.23 m/s

sorry if did not help :(

Answer:

B

Magnified images will not be created.

Explanation:

I did it and this was the correct answer

Answer:

B is correct the person above me is also correct. Hope this helps

Explanation:

Explanation:

KE = ½ mv²

KE = ½ (1.5 kg) (125 m/s)²

KE = 11,719 J

Answer:

11,719 J

Explanation:

AP3X

pog

The disk has mass 110 kg and radius 3.8 m is he value of the full angular momentum of the woman-disk machine is 9,759.7 kgm²/s.

The given parameters;

Mass of the woman, M = 50kg angular pace of the disk, w = 0.8rev/s

Mass of the disk, radius, r = 4.3m m = 110kg

The value of the full angular momentum of the woman-disk machine is calculated as follows;

I t =I disk omega+I woman

I t =(I disk +I woman )

\(I t =( 1/2 x m x r ^ 2 + M x r ^ 2I \\t = (1/2 x 110 x 4.3 ^ 2 + 50 x 4.3 ^ 2) *\)

\(I t = (1941.45kg x m ^ 2) x 5.0%I t =9, 759.7kg x m ^ 2\)/

Thus, the value of the full angular momentum of the woman- disk machine is 9,759.7 kgm²/s

\(t = 9.759 * 0.7ka m ^ 2.\)

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Hi! I'm happy to help you with your question. When a magnet is rapidly plunged into a coil and then equally rapidly extracted, the voltages induced in each case can be described as follows:

1. Rapidly plunging the magnet into the coil:

As the magnet moves towards the coil, the magnetic field passing through the coil changes.

This change in the magnetic field induces an electromotive force (EMF) in the coil, according to Faraday's law of electromagnetic induction.

The induced EMF creates a voltage across the coil, with a specific polarity based on the direction of the magnetic field and the direction of movement of the magnet.

2. Equally rapidly extracting the magnet from the coil:

As the magnet moves away from the coil, the magnetic field passing through the coil changes again.

This change in the magnetic field also induces an EMF in the coil, according to Faraday's law of electromagnetic induction.

The induced EMF creates a voltage across the coil, but with the opposite polarity compared to the previous case, as the direction of the magnetic field change is reversed.

In both cases, the voltages induced in the coil are due to the changing magnetic field created by the movement of the magnet.

The faster the magnet is plunged into or extracted from the coil, the greater the induced voltage will be.

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The acceleration of the object with an applied force of 100N and a mass of 50kg is 2m/s².

Acceleration is defined as the change in velocity per unit time. Velocity is defined as the speed of the object in a particular direction. The acceleration is a vector quantity. The unit of acceleration is m/s².

According to Newton's second law, Force is directly proportional to the acceleration of the object. F = m×a, where F is the force of the object, m is the mass of the object and a is the acceleration of the object.

From the given,

Force, F = 100N

mass of the object, m=50kg

acceleration of the object, a=?

F = m×a

a =F/m

  = 100/50

  =2m/s².

Thus, the acceleration of the object is 2m/s².

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When a positive charge moves in the presence of a magnetic field, it experiences a force that is perpendicular to both its direction of motion and the direction of the magnetic field. This is known as the magnetic force or the Lorentz force.

In each of the six cases shown in the diagram, the direction of the magnetic force on the positive charge can be determined using the right-hand rule. Here are the steps to use the right-hand rule:1. Point the thumb of your right hand in the direction of the velocity of the positive charge.

Curl your fingers in the direction of the magnetic field.3. The direction in which your palm faces is the direction of the magnetic force on the positive charge.Using this rule, we can determine the direction of the magnetic force in each of the six cases as follows.The magnetic force is downwards4. The magnetic force is upwards5. The magnetic force is to the left6.

The magnetic force is to the right In summary, the direction of the magnetic force on a positive charge that moves in the presence of a magnetic field can be determined using the right-hand rule. The direction of the magnetic force is perpendicular to both the velocity of the charge and the direction of the magnetic field.

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Answer:

ur awnser is d

Explanation:

!(*´∇`)ﾉ

Answer:

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

workdone = 10 × 2

We have the final answer as

Hope this helps you

Answer:

20 i think

Explanation:

Answer:

On average, only about 10 percent of energy stored as biomass in a trophic level is passed from one level to the next. This is known as “the 10 percent rule” and it limits the number of trophic levels an ecosystem can support.

Explanation:

Answer:

La fuerza electrostática de atracción entre las partículas es 7000 newtons.

Explanation:

Supongamos que las cargas son debidas a partículas. Puesto que las cargas tienen signos opuestos entre sí, debemos concluir que la fuerza electrostática es de atracción.

La fuerza electrostática (\(F\)), medida en newtons, es determinada por la Ley de Coulomb, cuya magnitud se determina con la siguiente fórmula:

\(F = \kappa \cdot \frac{|q_{A}|\cdot |q_{B}|}{r^{2}}\)

Donde:

\(\kappa\) - Constante electrostática, medida en newton-metros cuadrados por coulomb al cuadrado.

\(q_{A}\), \(q_{B}\) - Cargas de cada partícula, medidas en coulombs.

\(r\) - Distancia de separación entre las partículas, medida en metros.

Si conocemos que \(\kappa = 9\times 10^{9}\,\frac{N\cdot m^{2}}{C^{2}}\), \(q_{A} = -4\times 10^{-4}\,C\), \(q_{B} = 7\times 10^{-4}\,C\) and \(r = 0.6\,m\), entonces:

\(F = \left(9\times 10^{9}\,\frac{N\cdot m^{2}}{C^{2}} \right)\cdot \left[\frac{|-4\times 10^{-4}\,C|\cdot |7\times 10^{-4}\,C|}{(0.6\,m)^{2}} \right]\)

\(F = 7000\,N\)

La fuerza electrostática de atracción entre las partículas es 7000 newtons.

11.The time at 75° East longitude would be 1 hour and 20 minutes behind. 12.The time at 135° degrees East longitude would be 4 hours ahead. and 13. the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM.

At 2:00 AM at 90° East longitude, the time at 75° East longitude would be 1 hour and 20 minutes behind. This is because for every 15 degrees of longitude, there is a time difference of approximately 1 hour. Since the two longitudes in question have a difference of 15 degrees, we can divide this by 15 to calculate the time difference.

If it is 8:00 PM at 15° East longitude, the time at 135° East longitude would be 4 hours ahead. Similarly, for every 15 degrees of longitude, there is an approximate time difference of 1 hour. Since the two longitudes in question have a difference of 120 degrees, we can divide this by 15 to calculate the time difference.

There is a 7-hour difference** between 105° West longitude and the Prime Meridian (0° longitude). The Prime Meridian, passing through Greenwich, England, serves as the reference point for determining time zones. As one moves westward from the Prime Meridian, each 15 degrees of longitude corresponds to a time difference of approximately 1 hour. Therefore, the time at 105° West longitude would be 7 hours behind the time at the Prime Meridian.

If it is 9:30 AM in New York (41° North latitude, 75° West longitude), the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM. The latitude does not affect the time difference between the two locations. However, since both locations have the same longitude (75° West), they would experience the same local time. The time difference between different latitudes is primarily significant for determining time zones rather than the actual time within a specific time zone.

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The amount of sample of liquid in grams when its temperature is raised is calculated to be 20 g.

The term specific heat capacity refers to the amount of heat needed to raise a substance's temperature by one degree Celsius.

Q = m c Δt  

Q = 5.23 kcal of heat are absorbed by fluids = 5230 cal

C = heat capacity of liquid = 2.09 cal/g °C

Initial temperature of the liquid T i = 101 K

Final temperature of the liquid T f = 225 K

Change in temperature, Δt = T f - T i = 225 - 101 K = 124 K

Putting in the values, we get:

5230 = m × 2.09 cal/g °C × 124 K  

m = 20 g

The given question is incomplete. The complete question is 'The specific heat of a liquid x is 2.09 cal/g°c. A sample amount of grams of this liquid at 101 k is heated to 225 k. the liquid absorbs 5.23 k cals. what is the sample of liquid in grams? (round off decimal in the answer to nearest tenths)'

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The voltage drop across the 1.67 ohm resistor is V_1.67 = V * 0.232, where V is the voltage across the 7.17 ohm equivalent resistance of the circuit.

To calculate the voltage drop across the 1.67 ohm resistor in the circuit shown in the image, we first need to determine the current flowing through the circuit.

Using Kirchhoff's current law (KCL), we can say that the current flowing through the 2.2 ohm resistor is the same as the current flowing through the 1.67 ohm and 3.3 ohm resistors, since these three resistors are in series. Therefore, we can write:

I = V / (2.2 + 1.67 + 3.3) = V / 7.17

where I is the current flowing through the circuit and V is the voltage across the 7.17 ohm equivalent resistance of the circuit.

Next, we can use Ohm's law to calculate the voltage drop across the 1.67 ohm resistor:

V_1.67 = I * R_1.67 = I * 1.67

Substituting the expression for I from above, we get:

V_1.67 = V * 1.67 / 7.17

Therefore, the voltage drop across the 1.67 ohm resistor is V_1.67 = V * 0.232, where V is the voltage across the 7.17 ohm equivalent resistance of the circuit.

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The turtle's position and direction appropriately after each instruction to ensure accurate drawing. You can also customize the colors, sizes, and shapes to enhance the visual appearance of the AND gate.

To draw an AND gate using turtle graphics, you can use the following set of instructions:

Set up the turtle:

a. Set the turtle's initial position.

b. Set the turtle's pen color and size.

Draw the first input line:

a. Move the turtle forward to the starting point of the line.

b. Draw a straight line segment to represent the first input.

Draw the second input line:

a. Move the turtle to the starting point of the second line.

b. Draw a straight line segment to represent the second input.

Draw the output line:

a. Move the turtle to the starting point of the output line.

b. Draw a straight line segment to represent the output.

Draw the logic gate shape:

a. Move the turtle to the starting point of the gate.

b. Draw a rectangle to represent the gate.

c. Add any necessary labels or symbols to indicate it as an AND gate.

Add connections between lines and gate:

a. Move the turtle to the intersection point of the first input line and the gate.

b. Draw a small line segment to connect the input line to the gate.

c. Repeat the above step for the second input line and the gate.

d. Draw a small line segment to connect the output line to the gate.

Repeat the above steps as necessary to draw multiple AND gates or any additional components.

Remember to adjust the turtle's position and direction appropriately after each instruction to ensure accurate drawing. You can also customize the colors, sizes, and shapes to enhance the visual appearance of the AND gate.

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