Acceleration os defined as the rate of change for which characteristic?
A) displacement
B) position
C) velocity
D) time​

Answer:

360 degrees is one full rotation starting at zero

it take 2 s  to the flag to rotate once in a full circle  with 3 rad/s of angular velocity.

Angular velocity is "rate of change of angular displacement with respect to time". i.e. ω= dθ/dt. it is also defined as angular displacement over time. i.e. ω = angular displacement/Time.

Angular velocity shows how much angle can be covered in unit time. It's SI unit rad/s.

Angular acceleration is rate of change of Angular velocity with respect to time.

i.e. α = dω/dt if an object changes its angular velocity in short time, we can say that it has greater angular acceleration. It is expressed in rad/s².

In this problem we have to calculate time, but the angular velocity id not given.

Consider the angular velocity is 3 rad/s.

Given,

Angular displacement θ = 2π

angular velocity ω = 3 rad/s

Time t = ?

Time = θ/ω

Time = 2π/3 rad/s = 2 s

Hence the answer is 2s.

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Answer:Thus, if each of the charges were reduced by one-half, the repulsion would be reduced to one-quarter of its former value. Also In electrostatics, the electrical force between two charged objects is inversely related to the distance of separation between the two objects. ... And decreasing the separation distance between objects increases the force of attraction or repulsion between the objects.

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Explanation:

Nothing, until those two objects physically touch each other; contact aligns polarity among the now single shared mass.

(Your question never states if both objects are unique or similar polar charges, so I just assumed they were both neutral objects existing within an electric field.)

So a better question would then be, what is gravity’s relationship with an electric field?

You could solve this with the following: confine the electric field’s volume to a set variable (never increasing nor decreasing in size or shape); density is variable and easily definable. This creates the limit to build upon. This density has to be fluid and has electron mass (full of electrons at rest mass, so with substance but no movement). Within, create a closed system (the hard part in this equation; outside interference like ambient light will eschew results) where each variable of kinetic energy then is accounted for or measurable (including heat and light, and the physical movement of the two objects)

Determine the mass for both objects, calculate gravity for both and each body’s inertia on the other as a sum over distance. record results. Polarity is shared across the masses until there is no longer inertia (one mass or contact).

The heat transfer from the 800K source to the 500K sink has a higher entropy change and is more irreversible.

Heat transfer for source 1 =  -2000 kJ

Temperature 1 = 500K

Heat transfer for source 1 =  -2000 kJ

Temperature 1 = 750K

Irreversibility is a process that is determined by calculating a change in entropy with respect to surroundings.

The entropy change for the heat transfer formula is:

ΔS = Q / T

Heat transfer from the 800K source to the 500K sink:

ΔS1 = Q / T1 = -2000 kJ / 500K

ΔS1  = -4 kJ/K

Heat transfer from the 800K source to the 750K sink:

ΔS2 = Q / T2 = -2000 kJ / 750K

ΔS2 = -2.67 kJ/K

The heat source for ΔS1 is greater in magnitude than ΔS2.

Therefore we can conclude that heat transfer from the 800K source to the 500K sink has a higher entropy change and is more irreversible.

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Answer:

\( \huge{ \boxed{44 \: \: \text{inches}}}\)

Explanation:

To find the perimeter of the rectangle, we must first find the width of the rectangle given it's length and area then use it to find the perimeter of the rectangle.

Let the width be represented by w

Area of a rectangle = length × width

From the question.

Area = 105 sq. in

length = 7 in

\(105 = 7 \times w \\ 105 = 7w \: \: \: \: \: \: \\ \\ \frac{105}{7} = \frac{7w}{7} \\ w = 15\)

width = 15 in

Perimeter of a rectangle(p) = 2l + 2w

l is the length of the rectangle

w is the width of the rectangle

\(p = 2(7) + 2(15) \\ p = 14 + 30 \\ \\ p = 44\)

We have the final answer as

Answer:

Potential energy

u welcome lol

Answer:

The force of gravitational attraction between them also decreas

Answer:

Unbalanced force -  

Explanation:

Unbalanced force is expected to cause a body to accelerate.

Answer:

Unbalanced force

Explanation:

Unbalanced force is expected to cause acceleration in any body as it's net value is not zero in every direction .

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Answer:

10s A horse with an average speed of 15 m/s run.

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When you sit in your desk chair, the reaction force to your weight is the normal force from the chair, which is a true statement. Suppose that a book is sliding against a rough table, then a constant force is needed to maintain its velocity, which is also a true statement.

The normal force is an example of the contact force, which is the force that arises when two objects are in physical contact with each other. It acts perpendicular to the surface of contact and opposes the force of gravity.The force of friction acts against the relative motion of the surfaces in contact, and the net force is the difference between the two opposing forces.

When a book is sliding on a rough table, a force is needed to balance the force of friction acting on it so that its velocity can be maintained at a constant level. The book's velocity decreases over time if the force applied is less than the force of friction on the book. If the force applied is greater than the force of friction on the book, its velocity increases over time. Therefore, a constant force is needed to maintain its velocity

.According to Newton's laws of motion, a body remains at rest or in uniform motion in a straight line unless acted upon by an external force. A constant force is required to maintain uniform motion in the absence of any external force acting on the body.

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Deposition is when a gaseous state changes to solid state by escaping liquid state. So I think it is 3. Liquid glass cools and hardens

Answer: concave lens

Explanation:

Answer:

A or convex lens

Explanation:

The distance travelled by a ball hit by Kino is directly

proportional

to the amount of work done on it by the applied force.

When a ball is hit by Kino, the force exerted by the bat causes the ball to accelerate in the direction of the force. The acceleration of the ball, in turn, causes it to move a certain distance.

In physics, the amount of

work done

on an object by a force is equal to the product of the force and the distance moved by the object in the direction of the force. This can be expressed mathematically as W = F × d, where W is the work done, F is the force, and d is the distance moved.

Work done by a

force

is measured in joules (J). One joule of work is done when a force of one newton (N) is applied over a distance of one meter (m) in the direction of the force. Therefore, if a ball hit by Kino moves a distance of 200 meters (m) and the force applied by the bat is 100 newtons (N), the work done on the ball is W = F × d = 100 N × 200 m = 20,000 J.

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Answer:

If you haven’t read about the shark found swimming in and out of a segment of an undersea volcano, then you really need to get up to date.

Explanation:

Answer:

Communication is a vital component to the scientific process. It helps the scientist, if he/she was making an invention, tell people or get advice about  the project, which couldn't be done without communication. Scientists need to communicate to learn, get advice, and collaborate with one another.

Given: Mass of block, m = 280 g = 0.28 kg Length of string, L = 52 cm = 0.52 m Speed of revolution, ω = 95 rpm = 95 × 2π / 60 rad/s Centripetal force, F = Tension in the string Speed of the block, v = ?

We have to calculate the speed of the block and tension in the string.

Step 1: Calculate the speed of the block Centripetal force = Tension in the string, F = T Speed of the block, v = rω where r is the radius of the circle, r = L/2 = 0.52/2 = 0.26 mF = mv²/rv = sqrt (Fr/m) = sqrt(T(L/2)m/m) = sqrt(TL/2) v = sqrt((T × L) / 2) = sqrt((F × L) / 2) = sqrt((0.28 × 0.26 × 95 × 2π / 60) / 2) = 0.772 m/s (approx)

Therefore, the speed of the block is 0.772 m/s.

Step 2: Calculate the tension in the string The centripetal force required to move the block is given byF = mv²/r where m is the mass of the block, v is its velocity, and r is the radius of the circle described by the block.Tension in the string = F = mv²/rTension in the string = (0.28 × (95 × 2π / 60)² × 0.26) / 0.26 Tension in the string = 3.8 N (approx)

Therefore, the tension in the string is 3.8 N.

Centripetal force : A force that causes a body to follow a curved path is referred to as a centripetal force (from the Latin centrum, "center" and petere, "to seek")[1]. The centripetal force always goes in the opposite direction of the body's motion, in the direction of the instantaneous fixed point of the path's center of curvature.

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Answer:

According to the principle of the Conservation of Energy, energy can neither be destroyed or created, energy can be transformed from form to another

The forms of energy the car has at the different stages is given by virtue of either the position of the car, which is the car's potential energy, or the speed of the car, which gives the potential energy of the car

However, due to the frictional forces acting on the car, there is a frictional force which requires work to be done for the car to move between points in the roller coaster

Therefore, based on the Conservation of Energy principle, we have;

The total energy of the roller coaster, M.E. = m·g·\(h_{max}\)

Where;

m = The mass of the roller coaster = 4,500 kg

g = The acceleration due to gravity ≈ 9.81 m/s²

\(h_{max}\) = The maximum height = 30 m

Therefore, M.E.\(_A\) = 4,500 × 9.81 × 30 = 1,324,350 J

The energy at point B, \(M.E._B\) = 4,500×15×9.81 + (1/2) ×4,500×17.15² = 1,323,950.625

The energy at point B, \(M.E._B\) = 1,323,950.625 J

At point C, the total energy, \(M.E._C\) = (1/2)·m·v²

Where;

v = The velocity of the roller coaster at point c = 24.25 m/s

Therefore;

\(M.E._C\) = (1/2) × 4,500 × 24.25² = 1,323,140.625

At point C, the total energy, \(M.E._C\) = 1,323,140.625 J

Therefore, given that the energy at point A, M.E.\(_A\) is larger than the energy at point B, \(M.E._B\), is larger than the energy at point C, \(M.E._C\), the loss in energy can be explained by the presence of the friction which require energy for movement of the roller coaster between the points

Explanation:

Indirect lines can also be used in three-dimensional space, not merely as a two-dimensional visual component, as in Giacometti's "Man Pointing."

Giacometti employed the human form and the finger-pointing gesture in this sculpture to elicit a feeling of depth and spatial relationships. The viewer's gaze is directed into the space beyond the sculpture by the figure's extended arm and pointing finger, creating a powerful diagonal line that gives the impression of endless depth. Indirect line is used to give the piece vitality and movement and to provide the viewer a more immersive, three-dimensional experience.

There are numerous varieties of lines, and they are all distinguished by having lengths larger than widths. Depending on how the artist uses them, lines can be static or dynamic. They aid in figuring out the momentum, direction, and energy in an artistic creation. Line can be found all around us in daily life; a few examples include telephone wires, tree branches, jet exhaust, and curving highways.

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Answer:

c

Explanation:

would be the BEST way to add about 30 percent more aerobic activity to her week, She is interested in losing a little weight, so she would like higher than average aerobic activity, 250 minutes of moderate activity weekly would be the BEST way to add about 30 percent more aerobic activity to her week

Weight can be defined as the force at which the gravitational field pulls the object towards the earth’s surface which is the center of gravity which has a specific force attracts objects towards it.

The SI unit of weight of kg/mt/sq sq. is  Newton (N),

W = 1 kg (mass) X 1 mtr/sec sq (force of gravity), Unit of Weight is calculated as the product of mass, distance, and time.

Dimensional Unit of weight (W) = Mass (M) X Distance (L) X Time (t sq) CGS unit of Weight is represented as Dyne,  in terms of the product of centimeter gram and seconds.

The Basic Unit of Weight has the same value as that of the SI unit of weight and other units of weights also used includes gram, slug, pound-force, etc.

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The forces acting on the book as it is at rest on the table include gravity pushing down and the table pushing up, and these forces are balanced.

The book is under the influence of two forces. The downward force of the Earth's gravity and the upward force of the table's weight on the book are the two forces at play.

The table pulls on the book with an equal amount of force to that which the book pulls on the table, in accordance with Newton's third law. The book remains at rest on the table as a result of the net force being zero.

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Answer:

It is characterized by fast, quick passes down the court and using more players on the attack than the opposition has for their defense. Slower, more deliberate play characterizes the slow-break style. This technique calls for more thoughtful action; players maneuver carefully in order to shoot in this type of offense.

Remember

mass must be in kg.

RESULT,

49.5635J

Answer:

B:O

Explanation:

As acceleration is the rate of change of velocity with time, if velocity is uniform, there will be no change in it and acceleration will be zero.

According to Newton's third law, the "equal and opposite force" during the interaction between the Earth's gravity pulling down on a snowflake as it floats gently toward the ground is the upward force exerted by the snowflake on the Earth.

Newton's third law of motion states that for every action, there is an equal and opposite reaction. In this case, the action is the force of gravity pulling the snowflake downward. As a result, the reaction is the equal and opposite force exerted by the snowflake on the Earth.

While it may seem counterintuitive that a small snowflake can exert a force on the massive Earth, it is important to remember that forces act on both objects involved in an interaction. The force of gravity pulling the snowflake downward is met with an equal and opposite force from the snowflake pushing upward on the Earth.

This pair of forces, consisting of the Earth's gravitational force on the snowflake and the snowflake's force on the Earth, exemplifies Newton's third law and demonstrates the balanced nature of forces in an interaction.

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Answer:

Answer is on the pic

Explanation:

I hope it's helpful!

Answer:

the answer is 3600 kilometers