Velocity and Time
Using the graph above, what is the approximate velocity of the object at 5 seconds? *
During what time interval is the object slowing down? Explain how you can tell.
At what time or times was the velocity of the object about 4 m/s?
Describe the motion of the object being described in above graph.

Answer:

Hey Friend....

Explanation:

This is ur answer....

Hope it helps!

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If a balloon is cooled, its volume will decrease. This is because gases behave differently than solids and liquids when subjected to temperature changes.

In general, as the temperature of a gas decreases, the particles in the gas slow down and move closer together. This results in a decrease in the volume of the gas, since the same number of particles are now occupying a smaller space.

In the case of a balloon, the gas inside it will behave in the same way. As the gas cools, the particles will move closer together and the pressure inside the balloon will decrease, causing the balloon to shrink. This is why helium balloons, for example, tend to deflate in cold temperatures.

It is important to note that the decrease in volume will depend on the initial temperature and pressure of the gas, as well as the temperature to which it is cooled. In addition, if the cooling process is severe enough, the gas may even condense into a liquid or solid, which will result in a much greater decrease in volume.

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Answer:

Alot of god dam rabbits

Explanation:

Answer:

million rabbits becauseeverything

Answer:

In 5 years or so, the sun will be awash in sunspots and more prone to violent bursts of magnetic activity.

Explanation

once the magnetic field weakens the area and cold plasma enters the area of the sunspot

Answer

The answer is C I took the test an got an A.

Explanation:

K12 ASTRONOMY 7.07.04

Answer: yes

Explanation:

Animals of different species typically compete with each other only for food, water and shelter. But they often compete with members of their own species for mates and territory as well.

The point that supports both the load and the effort is the fulcrum.

A lever is a simple machine that is composed of three parts, the parts of the lever are as follows;

The point that supports both the load and the effort is the fulcrum and it is the point around which a lever rotates and that supports the lever and the load.

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Answer: x(t2)−x(t1) over the time interval [t1,t2]

Explanation: hope this helps

Answer:

D. Newton's second law

Explanation:

Newton's second law of motion states that force of an object is a product of its mass and its acceleration.

Mathematically, F= ma where  m is mass and a is acceleration

So from the statement above : The acceleration of an object is proportional to the force applied to it and  inversely proportional to its mass , it can be seen from the formula variation as;

F= ma -----making a the subject of the formula

a= F/ m

a= 1/m * F --------- a  is inversely related to m  as you can see from 1/m but directly related to F  hence;

Increase in mass with the same force applied causes the body to accelerate slower where as when force increases, the body accelerates faster.

Answer:

8. 9×10³N/m

Explanation:

k=2U /x²

= 2(25J) / 0.075m²

=8. 9×10³N/m  

Answer:

When you have two materials with the same index of refraction, it means that if they are touched by a ray of light it won't have a chance, and its form would prevail.

Explanation:

The reason behind this is that in the first place. When light passes through an object of certain refraction it is modified from its natural state, allowing it to change in color to the human eye or many other effects in other perceptive elements. However, when the same light passes through two objects with the same refraction due to their physical characteristics, it doesn't change because once it comes out of the first one it will suffer the same effect from the last one. For it to change the refraction would have to be higher or lower. Then it would be modified. The reason is because the dimensions are not modified. Because at some point the ray of light has to come out of the first one to enter the second one.

The kinetic energy flying with a speed 200 m/s is gJ is 16gJ.

The gravitational potential energy of an object is directly proportional to its height above the zero position.

Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational capacity electricity. A tripling of the height will bring about a tripling of the gravitational ability electricity.

Calculation:-

mass = 80 metric ton = 8000 kg

Kinetic energy = 1/2mv²

= 1/2 × 8000 × 200²

= 4000 × 200 × 200

= 160000000 J

Opposite to potential energy, the kinetic energy of an object is relative to different stationary and shifting items found in its immediately environment. as an instance, the kinetic energy of the item may be better if the object is located at a more height.

If the tennis ball is dropped from a bigger height, the share of potential energy misplaced may be greater because the ball will fall a for a longer quantity of time, which means it will lose extra electricity via air friction and from the bigger effect of the ground.

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Disclaimer:- your question is incomplete, please see below for the complete question.

does it take more energy to go fast or go high? an 80 metric-ton airplane is flying with speed 200 m/s at a height of 11 km. the energy from the ground up to this height was provided by fuel. find the airplane: kinetic energy in gj. gravitational potential energy in gj (ground as zero).

A.True

B. False

Answer:Sonar, short for Sound Navigation and Ranging, is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves.

Answer:

D. It is easy to copy.

Explanation:

It is not B, or A, nor C.

Answer:D

Explanation:

The mass of the series-200 Shinkansen bullet train is approximately 953,000 kg.

High-speed trains like the Shinkansen bullet train are well-known for their quickness and effectiveness. With a top speed of 76.4 m/s, the series-200 train is one of the largest bullet trains currently in use. Knowing the train's mass is crucial for ensuring correct operation since the kinetic energy of the train plays a significant role in its performance and safety.

To find the mass of the series-200 Shinkansen bullet train, we'll use the formula for kinetic energy:

Kinetic Energy (KE) = 0.5 * mass (m) * velocity^2 (v^2)

The highest kinetic energy (2.78 x 109 J) and velocity (76.4 m/s) are provided. We'll now calculate the mass:

1. Rearrange the formula to isolate mass:

mass (m) = (2 * KE) / v^2

2. Plug in the given values:

mass (m) = (2 * 2.78 x 10^9 J) / (76.4 m/s)^2

3. Calculate the mass:

mass (m) = (5.56 x 10^9 J) / (5833.76 m^2/s^2)

mass (m) = 9.53 x 10^5 kg

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Answer:       Calculate the electrostatic force using the formula: F = K[q1 x q2]/D^2 where K is coulombs constant, which is equal to 9 x 10^9 Nm^2/C^2. The unit for K is newtons square meters per square coulombs.

Explanation:

If the resistance remains constant and the voltage doubles, the power will increase by a factor of 4 (option E)

The following data were obtained from the question:

P = V² / R

Resistance is constant, we have

V₁² / P₁ = V₂² / P₂

V² / P = (2V)² / P₂

V² / P = 4V² / P₂

Cross multiply

V² × P₂ = P × 4V²

Divide both side by V²

P₂ = P × 4V² / V²

P₂ = P × 4

From the above, we can conclude that the power will increase by a factor of 4 (option E)

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Pascal's principle states that changes in pressure at any point in an enclosed fluid will be transmitted equally to all parts of the fluid and to the walls of the container that holds the fluid.

In other words, the pressure applied to a fluid in a closed container will be distributed equally throughout the fluid, regardless of the shape of the container or the location where the pressure is applied.

This principle is based on the fact that fluids are incompressible and cannot be squeezed or expanded to occupy a smaller or larger volume under pressure.

Pascal's principle has many practical applications, including hydraulic systems, which use liquids to transmit and amplify forces.

In a hydraulic system, an input force applied to a small surface area can be transmitted through a confined fluid and used to produce a larger output force on a larger surface area.

This allows for the efficient transfer of energy and the amplification of force, making hydraulic systems useful in many different fields, such as engineering, construction, and transportation.

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Answer:

mass = 0.14kg

Explanation:

kinetic energy (K.E.) = ( m / 2 ) v^2

where,

m = mass ( kg )

K.E. = kinetic energy ( J )

v = velocity ( m / s )

note that the question does not have a velocity factor in it

but, we are just going to use the speed parameter for velocity since they have the same units ( m / s )

from our question,

m = unknown ( but for solution purposes, we will just call it x)

K.E = 3.10J

v = 6.70 m / s

from our formula,

we substitute our values to have;

3.10 = ( x / 2 ) 6.70^2

3.10 = ( x / 2 ) 44.89

when we open the bracket, 44.98 will multiply with x to give

3.10 = 44.89x / 2

we cross multiply to give us

44.89x = 3.10 ( 2 )

44.89x = 6.20

divide through by 44.89 to give us,

44.89x / 44.89 = 6.20 / 44.89

x = 0.14kg

Answer:

7.5 Joules.

Explanation:

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

\( P.E = mgh\)

Where, P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Given the following data;

Weight of sugar = 5N

Height = 1.5m

\( P.E = mgh\)

But we know that weight = mg = 5N

Substituting into the equation, we have;

\( P.E = 5 * 1.5 \)

\( P.E = 7.5 J\)

Therefore, the potential energy the sugar had before it was taken from the shelf is 7.5 Joules.

The potential energy of the sugar at the given position before it was taken from shelf is 7.5 J.

The given parameters;

The potential energy of the sugar at the given position before it was taken from shelf is calculated as follows;

P.E = mgh

P.E = Wh

P.E = 5 x 1.5

P.E = 7.5 J

Thus, the potential energy of the sugar at the given position before it was taken from shelf is 7.5 J.

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The magnitude of the net force on the punching bag is 1714N

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The system is open, because there is a net force exerted on the block.

An individual strolling, a taking off baseball, a piece tumbling from a table and a charged molecule in an electric field are instances of dynamic energy at work. An item that isn't moving has zero motor energy.

The energy an item has as a result of motion is known as kinetic energy. A force must be applied to an item in order to accelerate it. We must put forth effort in order to apply a force. After the job is finished, energy is transferred to the item, which then moves at a new, constant speed.

According to question:

On graphing free body diagram of the problem

There is a force = mgsin(37°)

So, the it is a open system.

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Answer:

One end of any bar magnet will always want to point north if it is freely suspended. This is called the north-seeking pole of the magnet, or simply the north pole. The opposite end is called the south pole.

Explanation:

Answer:

North Pole and South Poles

Explanation:

There is no east or west in a magnetic field of a magnet. The magnetic field lines comes from North pole to south pole.

Answer:

600 J

Explanation:

KE = 1/2 mv^2

Explanation:What is centripetal acceleration?

Can an object accelerate if it's moving with constant speed? Yup! Many people find this counter-intuitive at first because they forget that changes in the direction of motion of an object—even if the object is maintaining a constant speed—still count as acceleration.

Acceleration is a change in velocity, either in its magnitude—i.e., speed—or in its direction, or both. In uniform circular motion, the direction of the velocity changes constantly, so there is always an associated acceleration, even though the speed might be constant. You experience this acceleration yourself when you turn a corner in your car—if you hold the wheel steady during a turn and move at constant speed, you are in uniform circular motion. What you notice is a sideways acceleration because you and the car are changing direction. The sharper the curve and the greater your speed, the more noticeable this acceleration will become. In this section we'll examine the direction and magnitude of that acceleration.

The figure below shows an object moving in a circular path at constant speed. The direction of the instantaneous velocity is shown at two points along the path. Acceleration is in the direction of the change in velocity, which points directly toward the center of rotation—the center of the circular path. This direction is shown with the vector diagram in the figure. We call the acceleration of an object moving in uniform circular motion—resulting from a net external force—the centripetal acceleration

a

c

a

c

​

a, start subscript, c, end subscript; centripetal means “toward the center” or “center seeking”.

Since there is less friction in this situation, we can say that the end speed will be 12.8 m/s because the complete energy has been conserved.

English definition of frictionless: devoid of friction (= the force that prevents an object from moving through or across something): The the ends of the bones in the joints are covered by cartilage, which allows for almost frictionless movement.

The term "frictionless surface" refers to a surface type where the force acting on any object that makes it challenging for the object to slide is now almost zero or negligible, i.e., where there is no resistance between the surface and substance designed to allow the object to slide as well as move freely without any friction.

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The method that can be used to separate mineral oil is Gravity Separation.

The most popular technique for separating oil emulsions is gravity separation. The components of the well stream, such as the water and oil, have various gravities.

When it is practical to separate two components using gravity, i.e., when the mixture's constituent parts have different specific weights, gravity separation is a technique used in industry. The components can be in suspension or in a dry granular mixture.

Removal occurs upward for solids lighter than water, such as dispersed droplets of oil, paper, and petroleum, and downward for solids denser than water, such as sediment.

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Answer:

While making a bridge or a building, the first thing that comes to our mind is that these are always made by the combination of concrete and steel. Concrete is cheap, but it has the property of breaking when it is twisted or under tension. Steel is expensive, If we made the whole thing with it, it will cost a lot. To provide strength under a reasonable cost, we use the combination of concrete and steel. Another postive point which they have together is that they both expand equally under heat, because they have the same coefficient of thermal expansion. It proves really useful, because if they had different coefficients of thermal expansions, one would expand more than the other, which will create tensions in the mixture and would break it easily. In the case, many cracks would start to appear in the bridge or buildings, which will eventually break them.

Complete question

A cannon with a muzzle velocity of 500. meters per second fires a cannonball at an angle of 30.° above the horizontal. What is the vertical component of the cannonball's velocity as it leaves the cannon?

A   0.0 m/s

B    250. m/s

C   433 m/s

D    500. m/s

Answer:

The correct option is  C

Explanation:

From the question we are told that

   The velocity is  \(v = 500 \ m/s\)

    The angle is  \(\theta = 30^o\)

Generally the vertical component of the canon ball is mathematically represented as  

          \(v_y = v * cos (30 )\)

=>       \(v_y = 500 * cos (30 )\)

=>       \(v_y = 433 \ m/s\)

Answer:

250. m/s

Explanation:

It is vertical component so you do: 500mSin(30°) = 250m/s