A 200 g blob of clay moves with a speed of 10 m/s towards a 300 g cart that is initially at rest.

a. What is the momentum of the system before the blob of clay strikes the cart?

b. What must be the momentum of the system after they come together?

c. If the blob of clay sticks to the cart, with what speed will the clay and cart move after they come together?

Answer:

2 seconds

Explanation:

The reason why the action potential is self regenerating is explained below .

What is Action Potential ?

The term Action Potential is defined as a rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane with a characteristic pattern .

We have to explain why the action potential is self - regenerating .

So , the action potential is self regenerating because the depolarizing currents established by the influx of Na⁺  flow down axon and trigger an action potential at next segment .

Therefore, the reason for the self regenerating action - potential is explained .

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The statement is true that sunlight falling on a spaceship in a vacuum will cause the spaceship to become a bit positively charged.

The photoelectric effect is the mechanism by which light may remove electrons from metallic surfaces, making them positively charged. The photoelectric effect might cause the surface of a metallic spaceship circling in sunlight to become positively charged.

Measuring the electron's energy is necessary for the photoelectric effect. Vacuum is necessary if you want to perform this with electrons. Under atmospheric conditions, electrons collide violently with gas molecules and atoms and quickly lose energy, which is completely unacceptable. Vacuum is therefore necessary.

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When deconstructing a medical term, the first element that should be identified is the prefix. By recognizing the prefix, one can break down the term into its individual components and comprehend the term's significance.

Medical terms are often composed of multiple parts, including prefixes, roots, and suffixes. The prefix is the element that appears at the beginning of a medical term and provides additional meaning or context. It can modify or specify the root word that follows it.

Identifying the prefix is crucial when deconstructing a medical term because it helps in understanding the term's overall meaning. It provides important information about location, time, quantity, or other specific characteristics related to the medical term.

By recognizing the prefix, one can break down the term into its individual components and comprehend the term's significance. Analyzing the root word and suffix separately further aids in understanding the term's specific medical concept or condition.

Therefore, when deconstructing a medical term, the first element to identify is the prefix, as it sets the foundation for interpreting the term's meaning and plays a significant role in medical terminology comprehension.

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The final speed of both playdoughs which stick together after the collision is 0.5 m/s

The mass of the first playdough = 0.5 kg

The mass of the second playdough = 0.25 kg

The initial speed of the first playdough =  1.5 m/s

The initial speed of the second playdough = 2 m/s

The final speed of both playdoughs can be found using the formula,

       m₁u₁ + m₂u₂ = (m₁ + m₂) v

where m₁,m₂ is the mass of the first and second playdough respectively

           u₁,u₂ is the initial speed of the first and second playdough respectively

           v is the final speed of both playdough

Let us substitute the known values in the above equation, we get

          0.5 x 1.5 + 0.25 x 2 = (0.5 + 0.25) v

                         0.75 x 0.5 = 0.75v

                                  0.375 = 0.75v

                                         v = 0.375 / 0.75

                                            = 0.5 m/s

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Answer:

The correct statements are: forces are measured in newtons and a force is a push or pull.

1. All applications of forces require contact between two objects.
- Incorrect. There are non-contact forces, such as gravitational and magnetic forces, that do not require direct contact between objects.
2. Forces are measured in Newtons.
- Correct. The unit used to measure force is the Newton (N).
3. A force is a scalar.
- Incorrect. A force is a vector quantity, not a scalar. This means that it has both magnitude and direction.
4. A force is a push or pull.
- Correct. Forces are interactions that result in a push or pull on objects, causing them to change motion or remain stationary.
In summary, statements 2 and 4 are correct, while statements 1 and 3 are incorrect.

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Answer:

Nucleus, cell membrane, cytoplasm and mitochondria

Explanation: They both have these 4 components, which is what they have in common.

Answer:

20 steps is his displacement

Answer:

B

Explanation:

Here .

B is denoted to asthenosphere

Answer:

Mass

Increases

Explanation:

Gravity is also affected by mass. Mass, which is the amount of matter in an object. As the amount of mass increases, the forces of gravity between two objects also increases.

Answer:

An increase in the mass on the string will cause an increase in the period.

Explanation:

We'll begin by writing an expression showing the relationship between the period and mass. This is shown below:

T = 2π√(m/K)

Where:

T is the period of oscillation.

m is the mass of the object.

K is the spring constant.

T = 2π√(m/K)

From the above formula:

The period (T) is directly proportional to the square root of mass (m) and inversely proportional to the square root of the spring constant (K). This implies that an increase in the mass of the object on the spring will result in an increase in the period of oscillation and a decrease in the mass of the object will also decrease the period of oscillation.

-94 J is the work done (W) on the point mass between these two times.

To find the work done (W) on a point mass (m = 7 kg) between two times (t = 0 s and t = 6 s) under the influence of a constant force F = 2i - 8j N, we can use the formula:

W = F • Δr

where W is the work done, F is the force, and Δr is the change in position vector.

First, we need to find the change in position vector:

Δr = rf - ro = (4i + 3j) - (7i - 8j) = -3i + 11j

Now, we can find the dot product of F and Δr:

F • Δr = (2i - 8j) • (-3i + 11j) = 2(-3) + (-8)(11) = -6 - 88 = -94

Therefore, the work done (W) on the point mass between these two times is:

W = -94 J

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The statements true in regards to heat is 3. Heat is a form of energy, can be reflected by a mirror, and cannot pass through a vacuum.

Heat is a form of energy. Heat is the transfer of thermal energy from one object to another. Thermal energy is the energy of motion of the particles in an object. Heat can be reflected by a mirror. Heat is a form of electromagnetic radiation, and electromagnetic radiation can be reflected by mirrors.

Heat cannot pass through a vacuum. Heat is a form of electromagnetic radiation, and electromagnetic radiation cannot pass through a vacuum. Heat is not an electromagnetic radiation. It is a form of energy that is transferred from one object to another because of a difference in temperature.

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Complete question:

Which of the following statements are true regarding heat?

(a) Heat is a form of energy

(b) Heat can be reflected by mirror

(c) Heat is an electromagnetic radiation

(d) Heat can pass through vacuum

Select the correct answer from the codes given below :

1. 1, 2 and 3

2. 2, 3 and 4

3. 1, 2 and 4

4. 1, 3 and 4

The minimum clearance distance for scaffolds from uninsulated power lines under 50 kv is 10 feet according to OSHA regulations.

This distance ensures that workers are safe from electrical hazards and reduces the risk of electrical shock or electrocution. It is important to note that this clearance distance may vary depending on the voltage of the power lines, so it is essential to follow all safety guidelines and regulations for working near power lines. Additionally, it is crucial to properly train workers on the safe operation of scaffolds and the proper use of personal protective equipment to minimize the risk of accidents and injuries. By adhering to safety protocols and maintaining a safe distance from power lines, workers can ensure their safety while working on scaffolds.

It is legal to utilise this kind of cable when the uninsulated power lines conductors are used to deliver electricity to a building or other structure and the uninsulated conductor serves as the system's ground connection. In the event of a malfunction or surge, the uninsulated conductor, sometimes referred to as the equipment grounding conductor, is utilised to safely discharge electrical current to the ground, safeguarding persons and property. It's crucial to remember that the National Electric Code (NEC) and municipal rules govern the usage of SE cable, and that it should only be installed by licenced electricians.

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Explanation:

Using kinematics,

t = 4s

u = 0m/s

a = 9.8m/s^2

Therefore v = u + at = 0 + (4)(9.8) = 39.2m/s.

Answer: tortoise

Explanation:

Given the following :

Speed of tortoise = 1m/s

Speed of hare = 3m/s

Mass of hare = 5kg

Mass of tortoise = 20kg

Momentum = product of Mass and velocity

Momentum of hare = mass of hare × Velocity of hare

Momentum of hare = 5kg × 3m/s = 15kgm/s

Momentum of tortoise = mass of tortoise × Velocity of tortoise

Momentum of tortoise = 20kg × 1m/s = 20kgm/s

Therefore, tortoise has a greater momentum than hare.

Answer:

The equations are both written in slope-intercept form, so I can see that the slope of one equation is 2 and the other is 8. If the slopes of lines are different, they will always intersect at a point.

Explanation:

Answer:

muscles, skin, and bones.

Explanation: Hope this helps! :)

Answer:

B

Explanation:

Chlorine institute

16+1=17

CI has 17 in the bottom.

Answer:C

Explanation:

Answer:

Voltage V = 117.65 volts

the voltage across the light bulb's filament is 117.65 V

Explanation:

The power of a light bulb can be expressed with respect to voltage and current flow.

Power = voltage × current

P = VI

Making Voltage V the subject of formula;

V = P/I

Given;

Power P = 4.0W

Current I = 0.034A

Substituting the given values;

V = 4/0.034

V = 117.65 volts

Answer:

Very low

Explanation:

It is fair to say to a reasonable extent that there are very low chances that radio transmissions from Earth or messages sent on distant space probes will ever be received by living beings .

Bear in mind that for years some scientists have believed without any substantial evidence that there are other living beings in distant space.

Answer:

because liquid and solid states of water possesses intermolecular force of attraction which held the molecules of water in fixed

Answer: 501.57g

Explanation: g=1.06×473.176

According to the given statement , the next charge on the object with an excess of 2.15 x 10²⁰ protons is 3.44 C (coulombs).

The next charge on an object can be determined by considering the excess protons it has. Each proton has a charge of +1.6 x 10⁻¹⁹ coulombs.

Given that the object has an excess of 2.15 x 10²⁰ protons, we can calculate the total charge by multiplying the number of protons by the charge of each proton:

Total charge = (2.15 x 10²⁰ protons) * (1.6 x 10⁻¹⁹ C/proton)

To perform this calculation, we can use scientific notation. When multiplying numbers in scientific notation, we add the exponents and multiply the coefficients:

Total charge = 2.15 * 1.6 x 10²⁰ * 10⁻¹⁹ C

Now, let's simplify the multiplication:

Total charge = 3.44 x 10 C

The next charge on the object with an excess of 2.15 x 10²⁰ protons is 3.44 C (coulombs).

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The frequency observed by the observer on the left (fL) is higher than the frequency observed by the observer on the right (fR). Here option A is the correct answer.

The observed frequency, fL, of the sound heard by the observer on the left is higher than the observed frequency, fR, heard by the observer on the right. This phenomenon is known as the Doppler effect.

When a source of sound is moving towards an observer, the sound waves are compressed, resulting in a higher frequency. Conversely, when the source of sound is moving away from an observer, the sound waves are stretched, leading to a lower frequency.

In this case, as the police car is moving towards the observer on the left, the sound waves are compressed, causing an increase in frequency. Therefore, the observer on the left hears a higher frequency, fL. On the other hand, the observer on the right experiences the sound waves stretching due to the car moving away, resulting in a lower frequency, fR. Thus, the correct answer is A. fL > fR.

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Answer:

Students should realize that each atom in a group has the same number of electrons in its outermost energy level. For instance, hydrogen, lithium, sodium, and potassium all have 1 electron on their outer energy level. Let students know that these electrons in the outermost energy level are called valence electrons.

The amount of work you must do to change the length of the spring from 7 cm to 12 cm is 0.3375 N·m.

To find the work required to change the spring's length from 7 cm to 12 cm, we'll use the formula for work done on a spring, which is W = (1/2)k(x₂² - x₁²), where W is the work, k is the stiffness or spring constant, x₂ is the final length, and x₁ is the initial length.

In this case, the stiffness (k) is 150 N/m, the initial length (x₁) is 7 cm - 5 cm = 2 cm (0.02 m), and the final length (x₂) is 12 cm - 5 cm = 7 cm (0.07 m).

Plug these values into the formula: W = (1/2)(150)(0.07² - 0.02²) = (1/2)(150)(0.0049 - 0.0004) = 75(0.0045) = 0.3375 N·m

So, you must do 0.3375 N·m of work to change the spring's length from 7 cm to 12 cm.

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The voltage at the node indicated by the red dot (at the inverting input of the op-amp) is 0 volts.

In an ideal operational amplifier (op-amp) configuration with negative feedback, the voltage at the inverting input (red dot) is equal to the voltage at the non-inverting input. Assuming the non-inverting input is grounded (connected to a 0V reference), the voltage at the inverting input will also be 0 volts. This is known as the virtual short circuit concept, which is a fundamental property of op-amps in negative feedback configurations.

Based on the virtual short circuit concept, the voltage at the red dot (inverting input) of the op-amp is 0 volts.

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The bottleneck event of the plants in an area results in secondary succession.

A bottleneck is an event that drastically reduces the population size of an organism. The bottleneck may be caused by various events, such as an environmental disaster, the hunting or habitat destruction that results in the deaths of organisms.

Secondary succession is a type of ecological succession in which plants and animals recolonize a habitat after a major disturbance such as a devastating flood, wildfire, landslide, lava flow, or human activity e.g., farming or road or building construction.

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The electron traveled 17.9 meters and the average acceleration of the electron is 4.44 x 10^13 m/s^2 in the direction of the unit vector ı^, which is along the direction of motion of the electron.

A. To find the distance traveled by the electron, we can use the equation:

d = (1/2)at^2

where:

a = acceleration of the electron

t = time interval

Initially, the electron is at rest, so its initial velocity, u=0 m/s

The final velocity of the electron is v = 4.0 x 10^6 m/s

Therefore, the acceleration of the electron can be found using the equation:

a = (v-u)/t

where:

u = initial velocity

v = final velocity

t = time interval

Substituting the given values, we get:

a = (4.0 x 10^6 m/s - 0 m/s) / (9.0 x 10^-8 s)

 = 4.44 x 10^13 m/s^2

Now, substituting this value for 'a' and the given value of 't', we get:

d = (1/2)at^2

 = (1/2)(4.44 x 10^13 m/s^2)(9.0 x 10^-8 s)^2

 = 17.9 m

Therefore, the electron traveled a distance of 17.9 meters in this time interval.

B. The average acceleration of the electron can be found using the equation:

average acceleration = change in velocity / time taken

We know that the initial velocity (u) of the electron is 0 m/s and the final velocity (v) is 4.0 x 10^6 m/s. Therefore, the change in velocity is:

change in velocity = v - u = 4.0 x 10^6 m/s - 0 m/s

                  = 4.0 x 10^6 m/s

Substituting this value and the given value of 't', we get:

average acceleration = change in velocity / time taken

                    = (4.0 x 10^6 m/s) / (9.0 x 10^-8 s)

                    = 4.44 x 10^13 m/s^2

Therefore, the average acceleration of the electron is 4.44 x 10^13 m/s^2 in the direction of the unit vector ı^ which is along the direction of motion of the electron.

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