What is weight?

A. The force exerted on a body by gravity.

B. The amount of matter present in any object or body.

C. The physical body's resistance to acceleration when a net force is applied.

D. The measure of inertia of the body

The correct free body diagram for the case when the ball is at its lowest point is tension pointing upwards and weight of the object pointing downwards.

The tension in the string at the lowest point in a circular path is equal to weight added to centripetal force required.

Mathematically, the formula for the tension in the string is given as;

T = W + ma

where;

At the lowest point the acceleration of the object is zero, a = 0. The new equation becomes the following;

T = W

The free body diagram of the tension and the weight of the object is given as;

                                ↑ T

                                Ф

                                ↓ W

Thus, the correct free body diagram consist of the tension force pointing upwards and the weight of the object pointing downwards.

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14. None of these cases are velocity and the acceleration in the same direction at the instant.

15. I, II, and III of these cases are the velocity and acceleration in opposite directions at the instant

16. case I of these cases are the velocity and the net force perpendicular to each other at the instant.

If the velocity and acceleration are in the same direction (both have the same sign and both positive or negative), the object is accelerating. If the velocity and acceleration are opposite (with opposite signs), the object is slowing down.

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When we sit on the chair, the chair is actually plying a force back on us in response to our force wielded upon the president because of Newton's third law.

What is Newton's third law?

The third law of Newton asserts that when bodies interact, they ply forces that are equal in size and directed in the contrary direction. Another name for the third law is the law of action-reaction law. This law is pivotal for understanding issues with static balance, where all pressures are in balance, but it also remains true for bodies moving at a constant or accelerated speed.

It does not only use secretary styles the forces it represents are factual forces. For illustration, a book laying on a table exerts downcast pressure equal to the weight of the book on the table. The table produces an equal and contrary force on the book in agreement with the third law.

Thus, According to Newton's third law there's an equal and contrary action and counteracts us so that neither move.

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Answer:

[tex]\huge\boxed{\sf v = 2.27\ m/s}[/tex]

Explanation:

Angular velocity = ω = 0.71 rad/s

Radius = r = 3.2 m

Linear velocity = v = ?

v = rω

v = (3.2)(0.71)

v = 2.27 m/s

[tex]\rule[225]{225}{2}[/tex]

The common temperature at which the ring just slip over the sphere is 37.83⁰C.

The change in the temperature of the lead ring is calculated as follows;

ΔA/A = βΔθ

where;

ΔA/A = 0.05% = 0.0005

Δθ = (ΔA/A) /(β)

Δθ = (0.0005) / (58.6 x 10⁻⁶)

Δθ = 8.53⁰C

The final temperature of the sphere = 29.3⁰C + 8.53⁰C = 37.83⁰C

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The normal force exerted by the chair on us, when we sit on the chair.

When an object interacts with another object, it feels a push or a pull. Each object that two objects make contact with experiences a force. Once the encounter is over, the force between the two objects is gone. Forces are merely interactions; they do not exist independently.

When two objects interact and appear to be in physical contact with one another, contact forces are generated. Several types of contact forces include frictional forces, tensional forces, normal forces, air resistance forces, and applied forces. Even when two interacting objects are far apart from one another, action-at-a-distance forces are still present.

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The force of viscosity is F = k r v η. Spherical balls of radius R are falling in a viscous fluid of viscosity η with a velocity v.

What is viscous force?

Viscosity refers to a material's capacity to resist movement between its layers. It is the force that resists relative motion between the layers. It is also known as viscous force.

What is viscous force formula?

In the above equation, the shear force is the viscous force, which is the only internal resistance that causes shear stress to develop along with the fluid layers. As a result, the viscous force formula will be given as. F=Aμdudy.

Hence  F = k r v η is a correct answer.

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If the distance between the objects is increased, the new force would be 1N

The term gravitational force has to do with the force that acts between two masses that are on the earth's service.

Now we know that the force that acts on the object can be given by;

F = Gm1m2/r^2

F = force that acts on the object

G = gravitational constant

m1 and m2 = masses of the objects

r = distance about

We can now see that the force that acts on the object would be 1 N.

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The law of conservation of mass emphasizes the fact that it is not possible to create or destroy the mass in this universe. Mass just changes its form from one to another, it is never created nor destroyed.

Therefore, the law of conservation of mass is best described by - The mass of the reactants and products is equal and this mass is not dependent on the physical state of the substances.

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[NOTE: THIS IS AN INCOMPLETE QUESTION. THE COMPLETE QUESTION IS: Which best describes the law of conservation of mass?

(A) The coefficients in front of the chemicals in the reactants should be based on the physical state of the products.

(B) Products in the form of gases are not considered a part of the total mass change from reactants to products.

(C) When reactants contain both a solid and a liquid, the solid counts toward the overall mass and the liquid does not.

(D) The mass of the reactants and products is equal and is not dependent on the physical state of the substances.]

No, he will not sink. A 3ft tall person will not be able to submerge in a pond that is less than 3ft deep.

What is submerge?
You immerse your body in water when you swim. Your head isn't submerged if it's above the water; it's just wet. You should immerse a washcloth in a bowl of water to thoroughly soak it. It is believed that William Shakespeare created the word "submerge." Although we cannot be certain of this, we do know that the word was first written down and subsequently read by someone when it appeared in the play Antony and Cleopatra.

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The maximum quantity per inner package or article for shipping risky commodities in limited quantities is the limited quantity exception.

The term "limited quantity" could refer to a specific object that is only available in a limited number or to a sort of resource that is only available in a limited amount. A limited amount often refers to an item's limited availability, such as a limited edition item or a product with a limited supply. If you are exporting small amounts of dangerous items, you may be eligible for a Limited Quantity Exemption. This exception is a simpler regulatory option to fully regulate all DG shipments. If your goods are eligible for this exemption, a number greater than zero will appear in the column "Limited Quantity Index." Even if dangerous commodities are carried in restricted or acceptable quantities, there are still packing and labeling standards that must be met. Some national regulations do not include provisions for restricted quantity and excluded quantity.

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Therefore, T_c~1.2×〖10〗^7 K is the equation for hydrostatic equilibrium.

A fluid's state where all of its surfaces are horizontal, coinciding, and have constant mass (or density). The opposing forces of gravity and pressure are perfectly balanced. The criterion of hydrostatic equilibrium, which is present in both planetary geology and astrophysics, is used to differentiate between dwarf planets and small solar system entities. The term "hydrostatic" is used to indicate a constant balance between pressure pushing up & gravity pulling down in a fluid.

A star is said to be in "hydrostatic equilibrium" when the gravitational force, caused by the mass of the star, and the gas pressure, caused by energy production in the star's core, balance each other out during the bulk of the star's existence.

A star must constantly fight against gravity in order to exist. Gravity is constantly pushing the star in the direction of collapse. But because the star's core is so hot, pressure is put on the gas. When the gravitational pull is equalized by this pressure, the star enters a condition of equilibrium known as hydrostatic pressure.

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The automative batteries are the corrosive hazard class.

The chemical present inside the battery are very corrosive and poisonous in nature.

Also if the batteries are excessively charged they can burst and cause a huge damage.

There is also very huge disposal problem associated with the battery because the chemical present inside the battery contain acidic material which will decrease the quality of the soil if they are buried in soil.

The human skin is also very sensitive towards the corrosive material of the battery.

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Answer:

Approximately [tex]16.0\; {\rm m\cdot s^{-1}}[/tex].

Explanation:

When an object of mass [tex]m[/tex] travels at a velocity of [tex]v[/tex], the momentum [tex]p[/tex] of that object will be [tex]p = m\, v[/tex].

In this example, the momentum of the car before the collision will be:

[tex]\begin{aligned}p &= m\, v \\ &= (4155\; {\rm kg})\, (28.3\; {\rm m\cdot s^{-1}}) \\ &\approx 1.17587\times 10^{5}\; {\rm kg \cdot m\cdot s^{-1}} \end{aligned}[/tex].

Since the truck was initially not moving, the initial momentum of the truck will be [tex](3172\; {\rm kg})\, (0\; {\rm m\cdot s^{-1}}) = 0\; {\rm kg \cdot m\cdot s^{-1}}[/tex].

Momentum is conserved in collisions. In other words, the sum of the momentum of the truck and the car will be the same right before and after the collision.

The sum of the momentum of the truck and the car was approximately [tex]1.17587\times 10^{5}\; {\rm kg \cdot m\cdot s^{-1}}[/tex] right before the collision. By the conservation of momentum, the sum of the momentum of the two vehicles right after the collision will also be [tex]1.17587\times 10^{5}\; {\rm kg \cdot m\cdot s^{-1}}\![/tex].

The velocity of the two vehicles right after the collision will be the same since the vehicles are stuck together. Let [tex]v[/tex] denote this velocity.

The sum of the mass of the two vehicles is [tex]m = (4155\; {\rm kg}) + (3172\; {\rm kg}) = 7327\; {\rm kg}[/tex]. Divide the total momentum of the two vehicles by their total mass to find the velocity:

[tex]\begin{aligned}v &= \frac{p}{m} \\ &\approx \frac{1.17587\times 10^{5}\; {\rm kg \cdot m\cdot s^{-1}}}{7327\; {\rm kg}} \\ &\approx 16.0\; {\rm m\cdot s^{-1}}\end{aligned}[/tex].

Answer:

B. 29.75 meters

Explanation:

Distance = speed x time

Distance = 3.5 x 8.5

Distance = 29.75 m/s

From Charles's law, the magnitude of the final temperature is 586 K

An Ideal gas is a gas which obeys ideal gas equation at all pressures, volumes and temperatures. The ideal gas equation can be express as

PV = nRT

Where

Given that 1000 cm³ of air at 20 °C and 101.35 kPa is heated at constant pressure until its volume doubles.

From the ideal gas equation,

To calculate the final temperature of the gas, we will use the formula below

V1/T1 = V2/T2

Since Pressure is constant

Substitute the necessary parameters into the formula

1000/293 = 2000/T2

Cross multiply

1000T2 = 586,000

T2 = 586,000/1000

T2 = 586 K

Therefore, the final temperature of the gas is 586 K

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Skinner's Operant Conditioning focus stressed that the  consequences of a behavior will indicate if there is  possibility of it being repeated and also  the human behavior  can be attributed to something in a person's environment.

Pavlov's classical Conditioning stressed that two stimuli can be linked  together  so that there can be new learned response in indivisuals .

Example of Pavlov's classical Conditioning  is that a dogs could be conditioned to salivate at the sound of a bell if it was programmed to ring at the time of food.

Example of Skinner's Operant Conditioning is that of negative reinforcement which was demonstrated by placing a rat in  Skinner box  which then subjected to unpleasant electric current  and make it to experience some discomfort.

Classical conditioning can as well be described as the Pavlovian or respondent conditioning which is the learning that do take place when two stimuli are linked together  and they can bring about new learned response in a person or animal.

Operant conditioning  was the one that stressed that the cause of human behavior  can be linked to the something in a person's environment.

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The iron rod gets magnetized when placed near a bar magnet due to magnetic induction while the copper rod does not get magnetized.

What is magnetic induction?

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Suri places each planet into a container of water. Saturn will float on top of the water because of the least density among all the planets. Therefore, option (D) is correct.

The density can be defined as the mass per unit volume. The average density of a substance is equal to the total mass divided by its total volume.

Density = mass/ volume.

As the Density was assumed and for the options, the density can be,

For, Mercury can be 5.4 g/cm³ , Venus can be 5.2 g/cm³ , Neptune can be 1.6 g/cm³, and Saturn is 0.7 g/cm³. Therefore, Saturn will float on top of the water.

Thus, Option D is the correct answer.

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To finish the electromagnet, connect the copper wire's exposed ends to the opposing battery connections. A magnetic field is produced by current passing via the wire coiled around the nail.

A loose electron is drawn to a proton to become neutral if an electron moves to the wire. Lack of electrons can result from pushing electrons from out their orbits. Electric current is the name given to the constantly moving electrons in wire.

Electrons are moving constantly in current electricity. Direct current (DC) and dc voltage (AC) are the two types of current used in electricity (AC). Electrons move only in the direction of direct current. Direct current is produced by batteries. The resistance to potential difference ratio determines the current. It is displayed as (I). I = V/R is the formula currently in use.

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Answer:

The object with the longer wavelength is the microwave oven. This can be determined using the equation λ = c/f, where λ is the wavelength, c is the speed of light (3 x 10^8 m/s), and f is the frequency.

For a microwave oven:

λ = (3 x 10^8 m/s) / (2.45 GHz)

λ = 1.22 x 10^-2 m

For a Bluetooth electronic/internet router:

λ = (3 x 10^8 m/s) / (2.4 GHz)

λ = 1.25 x 10^-2 m

Therefore, the microwave oven has a longer wavelength.

Explanation:

The universe's continual supply of energy and matter comes from the enigmatic big bang. Even if the total amount remains constant, this spreads out over time and becomes less and less beneficial.

However, the energy required for the Big Bang at the beginning of the Universe—that is, of everything—must have come from somewhere. Many cosmologists believe that it originates in the phenomenon known as quantum uncertainty, which allows energy to appear seemingly out of thin air.

In the instants following the Big Bang, the majority of the hydrogen and helium in the universe were produced. Later came the heavier components. A large variety of elements are created and dispersed by supernova explosions.

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Mass of body = 8kg

Momentum of body = [tex]30kgms^{-1}[/tex]

Force = 20N

Time for which force acts = 5s

Impulse of the force = Force × time for which force acts

= 20 × 5= 100Ns

Change of momentum = Impulse of the force= 100Ns

Therefore, the impulse of the force= 100Ns

Change of momentum is 100Ns

The final momentum of the body = 100Ns
The final velocity of the body is 5m/s

What is momentum?

Momentum is the result of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude and direction.

According to Isaac Newton's second equation of motion, the force applied on a particle is equal to the time rate of change of momentum. Check out Newton's laws of motion.

According to Newton's second law, if a particle is subjected to a constant force for a specific amount of time, the result of the force and time (referred to as the impulse) is equal to the change in momentum.

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Lithium and lithium-ion batteries are transported in both large and small volumes.

For instance, a single box could contain as little as five batteries, whereas a pallet could hold over 1,000, or the batteries could be enclosed in or packed with equipment.

On the other hand, lithium batteries, which contain lithium metal, cannot be recharged. Lithium-ion batteries can be recharged but do not contain lithium metal.

Lithium and lithium-ion batteries are mostly utilized in consumer applications and are exempt from dangerous goods/hazardous materials rules. Small lithium batteries are often used in timepieces and cameras. Lithium-ion batteries are extensively used in laptops and cell phones.

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Answer:

how long the coin was in the air was about 45 how I got your answer was by dividing 900 by 20 bc when u divide u have to add a 0 so that's how I got 900 then I just divided and got 45

A. Centripetal force acting on the two stars is the reason why the two stars will not crash into one another

B. The mass of each stars, given they maintain a constant distance of 8×10¹⁰ m is 7.68×10²⁷ Kg

A. Why don't the two stars crash into one another?

Centripetal force is the force that acts to keep an object moving in a circle. Since the two stars undergoes revolution, this means they rotate in a circle. Thus, centripetal force is acting on them.

Therefore, we can say that the two stars will not crash into one another due to the centripetal force

B. How do I determine the mass of each stars?

We can obtain the mass of each stars as illustrated below:

F = GM₁M₂ / r²

Note: They rotate mid-way. Thus distance apart (r) = 2r

F = GM₁M₂ / (2r)²

F = GM₁M₂ / 4r²

Also, centripetal force is given as:

F = mv² / r

Thus, we have:

mv² / r = GM₁M₂ / 4r²

But

v = 2πr / T

v² = (2πr / T)² = 4π²r² / T²

M₁ = M₂ = m

Thus, we have

m4π²r² / rT² = Gmm / 4r²

4π²r / T² = Gm / 4r²

Cross multiply

mGT² = 4r² × 4π²r

mGT² = 16π²r³

Divide both sides by GT²

m = 16π²r³ / GT²

From the question given, we have:

m = 16π²r³ / GT²

m = [16 × 3.14² × (8×10¹⁰)³] / [6.67×10¯¹¹ × (3.97×10⁸)²]

m = 7.68×10²⁷ Kg

Thus, the mass of each stars is 7.68×10²⁷ Kg

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Answer:

because its like that which do not hencintrate and prostate in the future work per week-20 Earning in the future and we are keen on the walls of our english and would like the same to happen as soon.

Answer:

Explanation:

Let's turn to the table of planetary densities:

Saturn will float in the water ( 0.7 g/cm³ < 1.0 g/cm³)

Answer:

Waves with a higher frequency have crests that are closer together, so higher frequency waves have shorter wavelengths.

Explanation:

Answer:

er so ue 0.984 kg study your self brhh