PLEASE HELP!!!! A 1500 kg high performance racecar can exert an average force of 15,000 Newtons to accelerate from o to 100 mph (45 m/s).
How much time will it take to reach this speed?

Kalanchoe plants produce plantlets on their leaves is an example of vegetative reproduction in plant.

Vegetative reproduction is a way of asexual reproduction of living things  (without the fusion of male and female sex cells). Vegetative reproduction can occur naturally or artificially. In natural animals:

Your question is incomplete but most probably your full question was:

Vegetative reproduction is a type of asexual reproduction in which nonreproductive parts of an organism can break off and develop into new individuals. Which event is an example of vegetative reproduction in plants? A. Pine trees produce seeds in cones. B. Mosses form spores in capsules. C. Sunflower plants produce seeds in their flowers. D. Kalanchoe plants produce plantlets on their leaves.

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Torque adds to forces and distance. Due to the fact that it is a vector quantity, it has both a magnitude and a direction. Either the angular velocity of an item is changing, or its moment of inertia.

Depending on the topic, it may also be referred to as the moment, moment of force, rotational force, or turning effect. The concept initially appeared in Archimedes' study on the use of levers. Torque adds to forces and distance. Due to the fact that it is a vector quantity, it has both a magnitude and a direction. A torque is an angle-dependent rotation about an axis, much like how a linear force pushes or pulls an item. Torque is a force that may cause an item to revolve around an axis.

Torque is defined as the product of force and distance.

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The water bath has a starting temperature of (18 0.5) °C and a finishing temperature of (40 0.3) °C, respectively.

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The rate of change (ROC) describes how rapidly something changes over time. It is hence the pace of change (rather than the amount of individual changes) that is important.

Continuous data is data that can have any value. Continuous data include height, weight, temperature, and length. Some continuous data will fluctuate over time, such as a baby's weight in its first year or the temperature in a room during the day.

A continuous variable is one that may take an uncountable or endless set of values.

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The image shows that the voltage affects the current and so does the resistance.

We know that the relationship between the voltage and the current can be obtained by the use of the Ohm's law. From the Ohm's law, we can see that;

V = IR

V = voltage

I = current

R = Resistance.

In this case, the resistance can be looked upon as the constnat of the proportionality. Based on the image, we can see that the current is related to the voltage and that the resistance also affects the current.

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The service disconnecting switch for an installation consisting of a limited load on a single branch circuit should have a rating of not less than 15 ampere.

A service disconnecting switch is a device which disconnects all the conductors of the system from the main source of supply. The limitation of current is due to the high heat produce. As heat in a conductor is a function of current. Like: H = i²Rt

Where I is the current, R is the resistance of the device, and t is the time of current flow. We can see by the formula that heat is directly proportional to the square of the current. More is the current more will be the heat produced.

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There would be  no change in the shape of the force extension graph.

We have to note that the Hooke's law states that, the force that is applied on an object would be proportional to the extension on the object. As long as the elastic limit is not exceeded.

In the case of the material, we have been told that the material would have twice its original diameter. We must note that the diameter of the object does not affect the force extension graph hence there is no change  in the graph.

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Yes, mass does change with gravity. The mass of an object is affected by the gravitational pull of the environment around it. The greater the gravitational pull, the higher the mass of the object.

This is because the object is being pulled closer to the source of gravity and thus its inertia increases, resulting in an increased mass. For example, if we were to compare two objects, one on the Earth’s surface and one on the Moon, the object on the Earth’s surface would be heavier due to the greater gravitational pull of the Earth. This is because the gravitational pull is stronger on the Earth than on the Moon, and thus the object on the Earth is being pulled closer to the source of gravity.

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Answer:

The correct answer is C. Low melting point, tendency to share electrons, nonelectrolyte. Covalent compounds are formed by the sharing of electrons between two atoms and they have a low melting point and are non-electrolytes.

The effective weight of the  ice skater is 497.75 N.

Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.

Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

The effective weight of the  ice skater = mass × net acceleration

= 55 kg × (9.8 m/s² - 0.75 m/s²)

= 497.75 N.

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Answer:  Coulomb’s Law provides one of the basic ideas about electricity in physics. This law takes a look at the forces which are created between two charged objects. As the distance increases then consequently there is a decrease in the forces and electric fields. The conversion of this simple idea took place into a relatively simple formula.

Coulomb’s Law is certainly an experimental law. This law quantifies the amount of force that exists between two stationary electrically charged particles. Moreover, electrostatic force or Coulomb force refers to the electric force which exists between charged bodies that are at rest. Coulomb’s Law describes the quantity of electrostatic force which is between the stationary charges.

Coulomb’s Law finds out the magnitude of the electrostatic force between the charges. The unit of the electrostatic force is Newton (N).

Electrostatic force = (Coulomb constant) absolute value of (charge 1) (charge 2)/ (distance between charges)2

F = k|q1q2|r^2

F = electrostatic force which exists between two point charges (N= kg.m/s2)

K = Coulomb constant k = 14πϵ0 ≅ 8.988×109N.m2/c2

q1 = charge of the first point charge(C)

q2 = charge of the second point charge(C)

r = refers to the distance between the charges (m)

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If G is the gravitational constant, m₁ and m₂ are the masses of the two objects, and d represents their separation from one another then the  gravitational formula, where F is the gravitational force equation is,

F =G((m₁m₂)/d)

Every particle in the universe is drawn to every other particle with a force that is directly proportional to the product of their masses and inversely proportional to their separation from one another, according to Newton's Law of Universal Gravitation.

In addition to interactions between the earth and other objects, all objects are subject to gravitational forces, the strength of which is inversely proportional to the product of their masses. Planetary orbits are studied by scientists using the law of universal gravitation. Because all objects have gravitational pull on one another, it is simple to explain the minor changes in a planet's elliptical motion.

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The statement is untrue since a vector is not a unit vector if all of its components are equal to 1.

Do all the elements of a unit vector have the value 1?

A unit vector is one with a magnitude of 1. It also goes by the name Direction Vector. Learn more about vectors here. Vector v = (1,3), for instance, is not a unit vector.

What is the unit vector's truth?

Since the denominator and numerator both have the same value, the unit vector has a magnitude of 1. Only direction exists in the unit vector. We are aware that a vector must have both magnitude and direction.

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The force acted on the golf ball is 2,700N.

Momentum in physics is the tendency of a body to maintain its inertial motion i.e. the product of its mass and velocity, or the vector sum of the products of its masses and velocities.

According to this question, a golf ball increases its momentum by 6.75 kgm/s. The impact between the ball and club lasted for 0.0025s.

Force is the rate at which momentum changes with respect to time i.e. (F = dp/dt).

Force = 6.75kgm/s ÷ 0.0025s

Force = 2,700N

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The magnitude for A =- 2i +2j+2k is 2[tex]\sqrt{3}[/tex].

The definition of magnitude in physics is "distance or quantity," which is all there is to it. It displays the motion of an object in motion, including any absolute, relative, or specific sized movements. It can be used to define the size or scope of anything. In physics, the general term "magnitude" is used to describe size or distance.

A number called the magnitude of a force serves as a measure of its strength. Let's say there is a 10 N force coming from the east. "towards east" designates a direction, while "10" denotes the strength of the force. The "value" or "amount" of any physical quantity can be thought of as the magnitude, in other words.

= [tex]\sqrt{a^{2}+b^{2}+c^{2} }[/tex]

[tex]= \sqrt{2^{2}+2^{2} +2^{2} } \\= \sqrt{12} \\= 2\sqrt{3}[/tex]

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Correct Question:

What is the magnitude of A =- 2i +2j+2k?.

One mole is made up of 6.022*10^23(standard mole value) atoms or other fundamental building blocks, such as molecules.

The mole, also referred to as mol, is a SI unit used to determine the quantity of particles in a specific substance. The molecular weight of a particular compound is 6.022 x 10^23. (such as atoms, molecules, or ions). Mass and particle quantity can be converted using the mole concept.

Avogadro's number, or the number in a mole, is influenced by the ratio of atomic mass units to grams. In relation to the mass of one hydrogen atom, which is approximately one unit, a mole of hydrogen atoms weighs around one gram. Avogadro's constant or "Avogadro's number" is referred to as 6.022 10^23.

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Let T be the duration of the wave, ie T = 1/f. So t = 1/4f means that at t = T/4 the marker moves 1/4 of a wavelength. So it will be in position C.

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The frequency of this wave is 15Hz. so, option (c) is correct. This indicates the size of the frequency is the turning fork vibrates 320 times every second.so, option (d) is correct.

What is frequency?

The number of waves that pass through a fixed location in a specific amount of time is known as frequency. As a result, if a wave travels for 1/2 second, the frequency is 2 per second.

What is wave?

A disturbance or variation that causes energy to gradually move from one point in a medium to another. It can be in the form of an elastic deformation or a change in pressure, electric or magnetic intensity, electric potential, or temperature.

Therefore, frequency of this wave is 15Hz. so, option (c) is correct. This indicates the size of the frequency is the turning fork vibrates 320 times every second.so, option (d) is correct.

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No ,  torque inversely proportional to the force and the lever arm

The distance that separates the force's line of action from its rotational axis is known as the lever arm.

A force known as a torque is imparted to an item, causing it to rotate around an axis. A force is an action that modifies an object's motion.

For instance, the torque produced by a force of one newton applied six metres from the fulcrum is equal to that produced by a force of three newtons applied two metres from the fulcrum.

Torque is used by levers to help humans lift or move items. The cross product of a force and the distance of the force from a fulcrum is what is known as a torque.

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The magnitude of the Electrostatic force is proportional to the square of the distance between the two charges. As a result, doubling the distance between the two charges reduces the attraction or repulsion to one-fourth of its original magnitude.

If the distance between objects is doubled, the force of attraction is 1/4.

If the distance between objects is doubled, the force between objects is quartered. If the distance between objects is tripled, the force between them is 9 times smaller. If the masses of both bodies double, the force between them quadruples.

Electrostatic force is a non-contact force. They pull and push things without touching them. When some materials rub against each other, something called a "charge" can move from one surface to another. Charged objects attract other uncharged objects and can push or pull other charged objects.

As the distance between two charges increases, the repulsive force between them decreases. For equal charges, the electrostatic force decreases as the distance between the two charges decreases.

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Ionizing radiation can have a variety of effects on the atmosphere. One of these is the production of ozone, which is a type of gas found in the stratosphere that absorbs harmful ultraviolet radiation from the sun.

Radiation is the emission or transmission of energy through a material medium or across space in the form of waves or particles. This energy may take the form of electromagnetic radiation, such as radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays, or particles such as alpha particles, beta particles, and neutrons. Radiation can be both natural and man-made. Natural sources of radiation include the sun, stars and other celestial bodies, naturally occurring radioactive materials, and cosmic rays.

A. It increases the amount of ozone in the atmosphere.

B. It causes the formation of aerosols.

C. It reduces the amount of greenhouse gases in the atmosphere.

D. It increases the amount of water vapor in the atmosphere.

A. It increases the amount of ozone in the atmosphere.

B. It causes the formation of aerosols.

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A crane lift a pallet of brick to the top of a 80 m building, requiring 400 kJ of energy, Therefore, the mass of the pallet is 502 kg.

Mass is a measure of the amount of matter in an object. It is usually expressed in kilograms (kg) or grams (g). Mass is an important physical property because it is related to a number of other physical properties, such as inertia, gravitational force, and momentum. In order for an object to have mass, it must have a certain amount of matter. Mass is distinct from weight, which is a measure of the force of gravity on an object.

The mass of the pallet can be calculated using the formula:

Mass (m) = Energy (E) / Work (W)

Where Work is calculated as:

Work (W) = Force (F) x Distance (d)

The force required to lift the pallet can be calculated from the height of the building:

Force (F) = Mass (m) x Acceleration due to Gravity (g)

Therefore, the mass of the pallet is:

m = E / (m x g x d)

m = 400 kJ / (9.81 m/s2 x 80 m)

m = 502 kg

Therefore, the mass of the pallet is 502 kg.

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Dimension formula of torque is T = F × R, and that of the kinetic energy is 0.5mv². The dimension of both will be same as [ML²T⁻²].

Torque in angular motion is equivalent to what force is in linear motion. In other words torque cause the angular change in and makes the object to rotates in a circular path around its own axis of rotation. It is formulates as T = F ×R. Where F is the force, R is the radius of circular path.

Its dimension would be, T = [MLT⁻²] × [L] = [ML²T⁻²]

Kinetic energy is that which is possessed by an object by the virtue of its motion. It is formulated as 0.5mv². Its dimension would be,

[M] × [LT⁻¹]² = [ML²T⁻²]

So the dimension formula for both will be the same.

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Answer:

V=I*R So, I=V/R

Explanation:

based on ohm's law, we need a voltage (usually supplied by a battery) and resistance (this could be many many things, w.e is being powered is the resistance, light bulb is the typical example)

1 kilogram is equal to 9.806 newton. A newton is equal to 1 kg/m2/s2 (it is a derived unit which is defined in terms of the SI base units).

The force required to accelerate one kilogrammes of mass at a rate of one meter per second squared in the direction of the applied force is consequently one newton. The term "meter per second squared" refers to the rate of change in velocity per unit of time, or the acceleration of velocity by one meter per second.

Isaac Newton inspired the naming of the newton. Like every SI unit named after a person, Newton's sign begins with an upper case letter (N), but when written in full, it adheres to the common noun capitalization rules, which means that "newton" is capitalized at the start of sentences and in titles but otherwise is written in lower case.

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The speed of the ball thrown that traveled 60 feet in 0.4 seconds is 150ft/s.

Speed is the rate of motion or action, specifically the magnitude of the velocity i.e. the rate distance is traversed in a given time.

Speed = distance moved (m) ÷ time taken (s)

According to this question, the fastest baseball pitch ever recorded was by Aroldis Chapman who threw a ball that traveled 60 feet in 0.4 seconds. The speed of the ball can be calculated thus;

Speed = 60feet ÷ 0.4s

Speed = 150ft/s

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Answer:

Ultrasound monitoring of fetuses and mapping the seabed are similar in that they both use sonar technology to create images.

Explanation:

Ultrasound monitoring uses high-frequency sound waves to create images of the developing fetus inside the womb. The sound waves are sent out by a transducer and are reflected back to create an image of the fetus, similar to how sonar sends out sound waves and receives the echoes to create an image of the seabed.

Mapping the seabed uses sonar technology to create images of the seafloor. Sound waves are sent out by a transducer and are reflected back by the seafloor, creating an image of the seabed. The time it takes for the sound waves to return is used to determine the depth of the seafloor.

Both ultrasound monitoring and mapping the seabed use the principle of echolocation, which is the ability to locate objects by reflecting sound waves off them and measuring the time it takes for the echoes to return.

In summary, both ultrasound monitoring and mapping the seabed use sonar technology to create images by sending out sound waves and receiving echoes, which is the principle of echolocation.

Explanation:

both are actually using the principle of sonar basically involves sound waves ,bouncing doing waves and measuring effectively the echoes mm hmm for ultrasound well.

An item can move, or can accelerate, slow down (decelerate), stop, or change direction as a result of the action of a force. It is possible to say that a force acting on an item causes that object to accelerate because any change in velocity is regarded as acceleration.

What knowledge is required for a pupil to distinguish between a moving object's speed and velocity?

Speed is the rate at which motion changes, or the distance that an item moves in a given amount of time, regardless of direction. Speed with regard to direction is defined as velocity. Velocity is a vector, whereas speed is a scalar.

In contrast to speed, which of the following best represents a velocity?

Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path.

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Because the light beam chooses the shortest path to its destination, the angle of incidence equals the angle of reflection. Fermat's principle refers to this behaviour of light. When a light beam is reflected off a planar surface, it exhibits the same behaviour.

According to Fermat's theory of light behaviour, a light beam always chooses the shortest path to its target. At the point of reflection, the same behaviour is observed. The angle of incidence equals the angle of reflection when a ray is reflected from a plane.

Angle of incidence equals angle of reflection at a small surface area.

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