What is the kinetic energy of a 7.26kg bowling ball Thai is rolling at a speed of 2m/s

Answer:

1.2

Explanation:

30/25=1.2 so 1.2*25=30

Answer:1.2 hours

Explanation:

distance=30km

Time=25hours

Speed=distance/time

Speed=30/25

Speed=1.2km/hr

Answer:

Proper Inflation and Feel When inflating your ball, you can use either a hand pump or an air pump equipped with a gauge that gives readings in pounds per square inch, also called psi. Footballs used in the NFL are inflated to 13 psi, but a proper range can fall between 12.5 and 13.5 psi, according to Wilson Sporting Goods.

Explanation:

A football is firm when it is inflated to its proper pressure due to the relationship between volume, pressure, and temperature in a gas.

A football is firm when it is inflated to its proper pressure due to the relationship between volume, pressure, and temperature in a gas.

When air is pumped into the football, its volume increases initially without much increase in pressure. However, once the air has filled the football to a certain point, the walls of the football resist further expansion, causing an increase in pressure with more air. Additionally, once the football is inflated, its pressure can further increase with temperature.

This is because when the temperature of a gas increases, the average kinetic energy of its particles increases, leading to more frequent and forceful collisions with the walls of the football, which in turn increases the pressure.

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Answer:

50N

Explanation:

A1 (area of the smaller piston) = 20cm² = 0.2m²

F1 (force acting on the smaller piston) = 10N

F2 (force acting on the larger piston) =?

A2 (area of the larger piston) = 100cm² = 1m²

F1 / A1 = F2 / A2

F2 = (F1*A2) / A1

F2 = (10*1) / 0.2

F2 = 50N

Final answer:

Through Pascal's law, applying a force of 10 N to a small piston in a hydraulic system can exert a force of 50 N on a larger piston, illustrating the force magnification capability of hydraulic systems.

Explanation:

The problem you've posed relates to the principles of a hydraulic system, which leverages Pascal's law to transmit force through a fluid in a confined space. According to Pascal's law, the pressure applied to a confined fluid is transmitted undiminished in every direction throughout the fluid. In the context of hydraulic systems, this principle allows for force magnification or reduction based on the areas of the pistons involved.

Given the force applied to the smaller piston (10 N) and the areas of the small (20 cm2) and large (100 cm2) pistons, we can calculate the force exerted on the larger piston as follows:

Therefore, the force exerted on the large piston by applying a force of 10 N to the small piston, in an ideal hydraulic system ignoring friction and other losses, is 50 N.

Answer:

a) [tex]r = 3.820\,m[/tex], b) [tex]v\approx 10.472\,\frac{m}{s}[/tex]

Explanation:

a) The needed length is found by the following formula:

[tex]r = \frac{v}{\omega}[/tex]

[tex]r = \frac{40\,\frac{m}{s} }{(100\,rpm)\cdot(\frac{2\cdot \pi}{1\,rev} )\cdot (\frac{1\,min}{60\,s} )}[/tex]

[tex]r \approx 3.820\,m[/tex]

b) The required speed is:

[tex]v = \omega \cdot r[/tex]

[tex]v = (100\,rpm)\cdot (\frac{2\cdot \pi}{1\,rev} )\cdot (\frac{1\,min}{60\,s} )\cdot(1\,m)[/tex]

[tex]v\approx 10.472\,\frac{m}{s}[/tex]

Final answer:

The sling must be 3.82 meters long for the object at the end to travel at 40 meters per second, while an object at the end of a 1-meter long sling will travel at 10.47 meters per second. Over one hour, the sling makes 6000 revolutions.

Explanation:

Calculating the Length of Sling and Speed of an Object

To calculate the length of the sling so that the speed of the object at the end will be 40 meters per second, we use the relationship between linear speed (v), radius (r), and angular speed (ω). The linear speed is given by the equation v = r ω, where ω must be in radians per second. For 100 rpm, we convert to radians per second:

ω = 100 rev/min × (2π rad/rev) × (1 min/60 s) = 10.47 rad/s

The required radius (or length of the sling) is then: r = v/ω = 40 m/s / 10.47 rad/s = 3.82 meters.

To find out how fast the object at the end of a 1 meter long sling would be traveling, we use the same formula: v = r ω = 1 m × 10.47 rad/s = 10.47 m/s.

Over one hour, the number of revolutions would be 100 rpm × 60 min/hour = 6000 revolutions.

Answer:

factory:

-mechanical energy

-nuclear energy

-gravitational energy

Explanation:

Answer:

No

Explanation:

An objects mass is not affected by gravity. No matter where an object is, it will have the same mass. How much it weighs will change, because gravity will change.

Answer:

No, the mass of the given object will be same on the Earth as well as on the Moon.

Explanation:

The term "mass" is estimation of a given object or a system of objects. It is a totally independent quantity. Thus, its magnitude will not vary while carrying it from one place to another.

Answer:

Series circuit

Explanation:

The type of circuit can be divided into series and parallel. In the series circuit, there is only one loop/path. If the path is cut or stopped, the current of the circuit will be stopped completely. A parallel circuit has more than one loops. This means the circuit has alternative paths that it can travel in case that one path is blocked or cut. This alternative path makes the parallel circuit have a lower resistance compared to the series.

Answer:

Temagami, James Bay

Explanation:

Answer:

  see below

Explanation:

The color you see is the result of that color being reflected (not absorbed) by the object.

The "reflected" answers here are straightforward. You also need to know that the mix of all colors is white.

__

For the "absorbed" answers, you need to look through the list of all colors and see which is NOT absorbed. That color is reflected, so is the color of the object.

When all light is absorbed, the apparent color is "black."

_____

These ideas are also used in other applications.

A "black hole," for example, is a stellar object that conceptually absorbs everything — all forms of energy and matter. (However, it has been recently discovered that black holes actually emit a certain kind of radiation.)

Conceptually, "white noise" is noise that consists of every frequency (all "colors"). In practice, it is restricted to a certain band, just a white light is restricted to the band of visible frequencies in the electromagnetic spectrum.

Answer:

B) 5

Explanation:

Pedigree charts can be read like family trees, and you can trace a trait through families. Squares usually refer to males, and circles refer to females. Shaded shapes usually refer to the presence of a specific trait, whereas blank shapes are those who do not possess the trait of interest.

The horizontal line between 1 and 2 shows that these individuals have had offspring.

If you follow that vertical line down to the next level, you can see it forms 5 branches - to individuals 3, 5, 7, 8 and 10. Therefore, 1 and 2 had five offspring.

Then, individual 3 had two children with individual 4 (see the horizontal line) - individuals 11 and 12.

Individual 5 had three children with individual 6 - individuals 13, 14, and 15.

Individual 7 did not have any children. Neither did individual 8

Individual 10 had four children with individual 9 - individuals 16, 17, 18 and 19.

Answer:

a

Explanation:

Answer:

(a). Energy is 64,680 J

(b) velocity is 51.43m/s

(c) velocity in mph is 115.0mph

Explanation:

(a).

The potential energy [tex]P[/tex] of the payload of mass [tex]m[/tex] is at a vertical distance [tex]h[/tex] is  

[tex]P =mgh[/tex].

Therefore, for the payload of mass [tex]m = 50kg[/tex] at a vertical distance of [tex]h = 132 m[/tex], the potential energy is

[tex]P = (50kg)(9.8m/s^2)(132m)[/tex]

[tex]\boxed{P = 64,680J}[/tex]

(b).

When the payload reaches the bottom of the shaft, all of its potential energy is converted into its kinetic energy; therefore,

[tex]mgh= \dfrac{1}{2}mv^2[/tex]

[tex]v= \sqrt{2gh}[/tex]

[tex]v = \sqrt{2*9.8*135}[/tex]

[tex]\boxed{v = 51.43m/s}[/tex]

(c).

The velocity in mph is

[tex]\dfrac{51.43m}{s} * \dfrac{3600s}{hr} * \dfrac{1mile}{1609.34m}[/tex]

[tex]\boxed{v= 115.0mph}[/tex]

To keep work output equal with a reduced force of 10 N, the object must be moved 100 m, based on the work formula showing that work equals force times distance.

To determine the distance an object must be moved with a different force while ensuring that the work input equals the work output, we use the work formula Work = Force × Distance. Initially, a 50 N force moves an object 20 m, so the work done is 50 N × 20 m = 1000 Joules. If the force is reduced to 10 N, to maintain the same amount of work (1000 Joules), the object must be moved a greater distance. We solve for the distance using the work formula, rearranging it to Distance = Work / Force. Thus, the new distance is 1000 Joules / 10 N = 100 m.

Because of its contact with air surface

Explanation:

When the water comes into contact with surface of a cool glass, water surface gets its contact with open surface air.

Due to the contact of water droplets with atmospheric air water particles condense up, which means molecules inside the water droplets comes into close contact where the inter molecular spaces becomes tight than previous.

Hence, Water gets condensed while it is brought into contact with cool glass.

Answer:

Specific heat.

Explanation:

I got it right!

(B) Temperature

Explanation:

Temperature is a measure of the average kinetic energy of the atoms or molecules in the system. The water molecules in a cup of hot coffee have a higher average kinetic energy than the water molecules in a cup of iced tea, which also means they are moving at a higher velocity.The specific heat capacity is how much energy is needed to increase the temperature of one gram of a substance by 1°C or 1K.

Answer:

As per international agreement.

Explanation:

A chemical symbol is a mode to represent a chemical element. These symbols are named as per international agreements.

Answer:

Letter D is not a reason to warm up.

Answer:

d

Explanation:

Answer:

Explanation:

a. Mechanical advantage

The mechanical advantage of a system of pulleys is the ratio of the ouput force (weight of the object) to the input force (pulling force):

b. Work input

Work is the product of the force applied by the distance traveled in the same direction:

c. Work output

Using the law of conservation of energy, the work output is equal to the change in the potential energy of the block:

d. Efficiency

The efficiency is the ratio of the work output to the work input:

You can check that the efficiency is also the ratio of the mechanical advantage to the ideal mechanical advantage

The ideal mechanical advantage is equal to the ratio of the input distance (pulling distance) to the output distance (lift distance):

The total force required to launch an F-14 from an aircraft carrier is calculated using Newton's second law (F = m * a). The mass of a sports car exerting a known force can also be found using the same principle. Changes in force based on different levels of acceleration and the cumulative effect of multiple engines on acceleration are understood using the proportionality of force to acceleration.

To calculate the total force that gets the F-14 in the air from an aircraft carrier, one can use Newton's second law, which states that force equals mass times acceleration (F = m * a). First, we find the acceleration using the formula a = (v - u) / t, where 'v' is the final velocity, 'u' is the initial velocity (which is 0 m/s in this case), and 't' is the time. Substituting the given values, a = (68.2 m/s - 0 m/s) / 2 s, which gives an acceleration of 34.1 m/s². The mass of the plane is 29,545 kg, so the force can be found by multiplying the mass by the acceleration: F = 29,545 kg * 34.1 m/s², which results in a total force of 1,006,284.5 N.

For the sports car question, we are given the force exerted by the car and asked to find the mass. Since force equals mass times acceleration, the mass is equal to force divided by acceleration. The acceleration (a) can be calculated by using the formula a = (v - u) / t. With v being 27 m/s, u being 0 m/s, and t being 6.3 seconds, the mass (m) is calculated as m = F / a. After computing 'a', you can use the provided force (F) to find 'm'.

If the boy's acceleration changes due to the energy pill, the force can be recalculated using Newton's second law, keeping in mind that Force is proportional to acceleration for a constant mass. If the original force was 45 N for an acceleration of 1.00 m/s², and the new acceleration is 5.6 m/s² with the same mass, the new force will be proportional to this increase. The new force would be found by multiplying the old force by the ratio of the new acceleration to the old acceleration, giving us the new force = old force * (new acceleration / old acceleration).

To determine the acceleration of the cartoon plane with all four engines running, you would simply multiply the acceleration with one engine by the number of engines if each engine provides the same force. Therefore, if the acceleration with one engine is 8.9 m/s², with all four engines it would be 4 times that, resulting in an acceleration of 35.6 m/s².

Answer:

D) Dalton's theory had repeated observations which were supported by extensive evidence.

Explanation:

Dalton had a basis for this prediction and theory. He worked extensive on gases before stepping forward with the Dalton's atomic theory.

His scientific conjecture was highly corroborated with a wide array of experimental evidence and many infallible proofs.

Final answer:

John Dalton's atomic theory superseded Aristotle's theory because it was based on repeated observations and extensive experimental evidence, marking a shift to scientific methodology in understanding matter.

Explanation:

The reason why John Dalton's atomic theory became more widely accepted over Aristotle's theory of matter is choice D) Dalton's theory had repeated observations which were supported by extensive evidence. Unlike Aristotle, who postulated that matter was composed of four elements - earth, air, fire, and water - without empirical evidence, Dalton based his atomic theory on experimental data. He made quantitative measurements and supported his hypotheses with detailed observations on the weights and combinations of elements.

Dalton's work marked a significant transition from philosophical speculation to scientific methodology in understanding the composition of matter. This alignment with the emerging scientific methods of the time made Dalton's theory far more persuasive and enduring than Aristotle's more abstract and empirically unsupported notions.

The fact which is true about the gibbous moon is more than half of its lit surface can be seen.

Option B

Explanation:

There are nearly 12 phases the moon undergoes between one new moon to another new moon condition. All these phases has different names based on their shape or structure visible in the sky during this period.

The gibbous phase of the moon comes in the 4th and 6th phase after the new moon. The gibbous moon which comes in the 4th phase is termed as waxing gibbous as from this time, the size of the moon lit will be increasing till full moon, after this phase.

Then in the 6th phase, the gibbous moon is termed as warning gibbous moon as from this time, the size tends to decrease after this. But in both the conditions, when the moon is in gibbous moon phase, more than half of its lit surface will be seen in the sky.

Answer:

More than half of its lit surface can be seen.

Explanation:

The vertical component of the momentum of the volleyball is -0.49 kgm/s and the horizontal component is 38.93 kgm/s.

To find the vertical component of the momentum, we need to first find the vertical velocity of the volleyball. We can use the equation:

vf = vi + at

The initial vertical velocity is 0 m/s since the volleyball was sent up from rest. The final velocity can be found using the equation:

vf = vi + gt

where g is the acceleration due to gravity. Plugging in the values and solving for vf, we get:

vf = 0 + (-9.8 m/s^2)(0.05 s)

vf = -0.49 m/s

Since the downward direction is considered negative, the vertical component of the momentum is -0.49 kgm/s.

To find the horizontal component of the momentum, we can use the equation:

p = mv

where p is the momentum, m is the mass of the volleyball, and v is the horizontal velocity. The horizontal velocity can be found using:

vx = v * cos(theta)

where theta is the angle above the horizontal. Plugging in the values, we get:

vx = 45 m/s * cos(30 degrees)

vx = 38.93 m/s

Therefore, the horizontal component of the momentum is 38.93 kgm/s.

According to work-energy theorem, when work is done by an applied force, the object's kinetic energy will change.

The work-energy theorem only takes into account net work; it does not take into account work produced by a single force.

According to the work-energy theorem, an object's change in kinetic energy equals the net work performed by the applied forces.

The quantity of internal and mechanical energy that things contain fluctuates as a result of work. Energy is contributed to a system or an item when work is done on it.

The body was initially at rest before the work being performed; it was only after a force was applied that there were energy changes in the kinetic energy.

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Final answer:

In the interactive 'It's all Uphill,' the work done by pushing an object up a ramp increases the object's potential energy.

Explanation:

When work is done by an applied force on an object, it results in an energy change for that object. If the interactive mentioned is 'It's all Uphill,' where the context involves pushing an object up a ramp, the work done would primarily increase the object's potential energy.

This is because as the object is raised to a higher elevation against gravity, it stores more energy in the form of potential energy which could be converted back to kinetic energy if the object were allowed to fall back down.

Work-energy theorem is crucial in understanding these concepts as it states that the work done on an object results in a change in kinetic energy. When the work is done against gravitational force, like pushing an object up an incline, it increases the object's potential energy.

Conversely, when an object is allowed to move downwards, the gravitational force does work on the object, converting its potential energy into kinetic energy.

Real-world examples, such as driving a car, illustrate how forces can do work which either increase kinetic energy (acceleration) or decrease it (braking).

When the car accelerates, the engine does work, and the car's kinetic energy increases. When you apply the brakes, they do work in the opposite direction of motion, and kinetic energy decreases.

Answer:

Pressurized gas

Explanation:

When we compress the gas, the volume occupied by a gas decreases, since the volume is inversely proportional to the pressure, the compression of the gas causes an increase in Pressure. The molecules not only collide with each other but also on the walls of the container.

Compressed gases can cause fires, explosions, low-oxygen atmospheres, exposure to toxic gases and the physical danger associated with high-pressure cylinders. Special procedures for storage, use, handling and disposal are required to ensure the safety of the researchers who use these chemicals and equipment. There are also risks associated with the gas pressure and the physical weight of the cylinder. A falling gas bottle can break containers and crush your feet. The cylinder can become a missile if the cylinder valve breaks.

Answer:

The short answer is that velocity is the speed with a direction, while speed does not have a direction.

Explanation:

Speed is how fast an object is moving. It is calculated by the displacement of space per a unit of time. Velocity is the rate at which an object changes position in a certain direction. It is calculated by the displacement of space per a unit of time in a certain direction. Velocity deals with direction, while speed does not.

Answer:

velocity is speed with direction

Explanation:

The gravity has traditionally been defined as a force of attraction between things that have masses.

Explanation:

Gravitational force is a type of attractive force. It is because of this force, that we are able to walk on this Earth. Also due to gravitational force, the solar system and the galaxies are existing in the universe. Sir Issac Newton first discovered this force. He postulated the universal law of gravity. And according to this law, the gravitational force will be acting between the objects having masses and separated by a distance. So in this law, it states that gravitational law is directly proportional to the product of masses and inversely proportional to the square of the distance between them.

Thus, the gravity has traditionally been defined as a force of attraction between things that have masses.

Answer:23 seconds

Explanation:

Acceleration(a)=3.87m/s^2

distance(d)=1020m

Initial velocity(u)=0

d=uxt + (axt^2)/2

1020=0xt + (3.87xt^2)/2

1020=(3.87xt^2)/2

Cross multiply

1020x2=3.87xt^2

2040=3.87xt^2

t^2=2040/3.87

t^2=527.13

t=22.95

Time(t) is approximately 23seconds

Answer:Use two magnants with opposite poles South and north attract to each other same poles push away. So using two magnants as the forces that will attract each other.

Explanation: I feel like this is how I would go about it but If it is wrong I apologize but I don't know what else they would want. So that said Good luck :) hope this helps.

Use two magnet of opposite poles to  set up an experiment in which the forces attract each other. In this  set up, the poles of the magnet must be opposite and it can be easily demonstrated as an experiment in which the forces attract each other.

The attraction or repulsion of magnetic force results from the motion of electrically charged particles. It is the fundamental force behind phenomena like how electric motors operate and how magnets are drawn to iron.

Among fixed electric charges, there are electric forces; among moving electric charges, there are both electric and magnetic forces. The influence of a magnetic field generated by one charge on another charge can be referred to as the magnetic force between two moving charges.

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