The kinetic energy, k, of an object varies jointly with the mass of the object and the square of the velocity of the object. a 50-kg object moving at a velocity of 20 meters per second has 10,000 joules of kinetic energy. how many joules of kinetic energy does a 25-kg object moving at a velocity of 10 meters per second have? 250 joules 1,250 joules 2,500 joules 3,125 joules

Answer:

107.4 meters

Explanation:

gravity is 9.8m/s^2

max height = (velocity squared times sin squared angle) ÷ ( speed of gravity times 2 )

max height = (48 squared times sin of 73 squared) ÷ ( 9.8 times 2 )

Answer:

An ellipse with the Sun at one of the foci of the ellipse

Explanation:

Planets have elliptical orbits

Hope you understand

Have a nice day

Answer:

(a) 217 Ra          (b)     29 P

      84                          16

Explanation

(a) 221 Rn ---------------> 4 He + 217 Ra

      86                           2             84

    the mass number is reduced by 4 while the atomic number is reduced               by 2 since an alpha particle is emitted

(b) 29 P ------------------> 0 e + 29 P

       15                          -1         16

     the mass number remains the same while the atomic number is reduced by -1 since a beta particle is emitted

Answer:

blizzard

Explanation:

A blizzard is a severe snowstorm characterized by strong sustained winds and low visibility

As a proton moves in the direction of the electric field lines,  it is moving from low to high potential and gains electric potential energy.

The imaginary lines are of an electric field such that the tangent drawn to it points in the direction of electrostatic force.

When a proton is moving along the electric field lines, it is gaining energy.

Thus, when a proton moves in the direction of the electric field lines, it is moving from low to high potential and gaining electric potential energy.

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Archaeologists use radioactive decay of an isotope of the element carbon. Because it has a fairly short half-life, and is found in anything that was once living.

The act of producing radiation spontaneously is known as radioactivity. This is accomplished by an unstable atomic nucleus that want to give up some energy in order to move to a more stable form.

Archaeologists use radioactive decay of an isotope of the element carbon. Because it has a fairly short half-life, and is found in anything that was once living.

Hence, carbon is used the correct answer for the blank.

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Answer:

Answer is carbon

Explanation:

EDGE2023

Answer:

Positive and Negative, commonly carried by charge carriers protons and electrons. Examples of the types of charges are subatomic particles or the particles of matter: Protons are positively charged. Electrons are negatively charged.

Explanation: ;)

electrostatic charge and symbolized q, is a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons.

Answer:

The Refractive Index (RI) is defined as the ratio of the speed of light in a vacuum to its speed in the sample medium.

Formula:-

[tex]n = \displaystyle{ \frac{c}{v} }[/tex]

Where,

c is the speed of light and v is the phase velocity of light.

Answer:

look at the explanation

Explanation:

the first one, 4th one and 6th one will go into repulsion and the others will go into attractive (hope this helps and Goodluck on any other questions)

Answer: Acceleration is 0.25m/s^2

Explanation:

Answer:

Impulse-The effect of force acting over time to change the momentum of an object.

momentum-The product of mass of a particle and its velocity.

Answer:

.6 A

Explanation:

Battery 15 VOLTS

V = IR

V / R = I

15 / ( 5+20) = .6 amps

Answer:

165.5

Explanation:

vrms × root 2= v max

Hence we get v maximum =165.5 V

Answer:

Those common things which they both have are:i) They both start off with fusing hydrogen into helium.and ii) They both generate their energy by the process called nuclear fusion.((hope it is useful for u all))

The Earth is rotating with the rotational speed. The linear speed of the earth's rotation at the North Pole is zero.

The linear speed is when a particle is assumed to be moving in a straight line. The rate of change of distance with time is called linear speed.

The linear speed at the North Pole is

v = distance /  time

At the North Pole, the distance around the Earth is zero. The rotation for 224 hrs.

v = 0 / 24 hrs

v =0 mph

Therefore, the linear speed of the earth's rotation at the North Pole is zero.

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Answer:

35 to 52 minutes

Please mark me as the brainliest

Answer:

Option 4

Explanation:

The difference between the Paleozoic and Mesozoic Era is that animal complexity increased during the Paleozoic while the first flowering plants appeared in the Mesozoic Era.

The Paleozoic is the first part of the Phanerozoic Era, and is followed by the Mesozoic Era, which is the second part.

The difference between the Paleozoic and Mesozoic eras is "Animal complexity increased during the Paleozoic while the first flowering plants appeared in the Mesozoic era." The correct option is D.

The Paleozoic era and Mesozoic era are two major divisions of geological time.

The Paleozoic era, also known as the "age of invertebrates," spanned from about 541 million years ago to about 252 million years ago. During this era, the first multicellular organisms evolved, and there was a rapid diversification of life forms. This era saw the rise of fish, amphibians, and reptiles, as well as the first forests and the development of early land plants. The Paleozoic era ended with a mass extinction event that wiped out about 90% of all marine species and nearly 70% of all land species.

The Mesozoic era, also known as the "age of dinosaurs," spanned from about 252 million years ago to about 66 million years ago. During this era, reptiles continued to dominate the land, and dinosaurs evolved and became the dominant terrestrial animals. This era also saw the rise of birds, the evolution of flowering plants, and the emergence of mammals. The Mesozoic era ended with a mass extinction event that wiped out the non-avian dinosaurs, as well as many other species of plants and animals.

Here in the Question,

Option A, "Animals lived in the water during the Mesozoic and on land in the Paleozoic," is not a correct difference between the two eras. In fact, animals lived both in the water and on land during both the Paleozoic and Mesozoic eras. The Mesozoic era is famous for the rise of the dinosaurs, which were primarily land-dwelling animals, while the Paleozoic era saw the rise of amphibians and the first land-dwelling vertebrates.

Option B, "The first birds emerged in the Paleozoic era while mammals first emerged in the Mesozoic," is also not a correct difference between the two eras. In fact, birds did not emerge until the Jurassic period of the Mesozoic era, while the first mammals are believed to have emerged during the late Triassic period.

Option C, "Many different species of dinosaurs lived in the Mesozoic, but they all died off in the Paleozoic," is not correct either. Dinosaurs first appeared during the Mesozoic era and dominated the terrestrial ecosystem for more than 150 million years before they went extinct at the end of the Cretaceous period. The Paleozoic era ended more than 100 million years before the first dinosaurs appeared.

Therefore, The correct option is D. Animal complexity increased during the Paleozoic while the first flowering plants appeared in the Mesozoic era.

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The downward force of air on top of the wings decreases. The net lifting force of the air on the wings increase. A passenger jet in the air increases its speed.

Step 2 does the robotic arm do work on the block. Joshua programs a robotic arm to place a block in a box. a four-row, two-column table.

A robotic arm is a type of artificial arm that may be programmed to do tasks similar to those of a human arm.

The arm can be the sum of the mechanism or part of a larger robot. Joints connect the manipulator's linkages, allowing rotational or translational motion.

By following the directions in the table, Joshua programs a robotic arm to place a block in a box. a four-row, two-column table.

The items in the first column labeled step are 1, 2, 3, and 4. Grip block, elevate block 10 cm, hold for 20 seconds, release block are the items in the second column labeled command.

Step 2 does the robotic arm do work on the block.

Hence,step 2 is the correct answer.

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Answer:

Hello, I'm here to help you.

↬ 78%

Explanation:

↬ Think that about 70% of the area of the earth is covered by the ocean.

↬ So the precipitation that falls on it is a smiliar percentage.

Answer:

the answer is E-F

Explanation:

why is because the others are lines but E-F is curve

The corporate form of organization has a disadvantage of government regulations, which is due to the complicated rules. The correct option is b.

The  major characteristics of a corporate form of organization are limited liability, shareholder ownership, double taxation, continuing lifespan and professional management.

Among the options, the disadvantage is government regulations.

Thus, the correct option is b.

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The potential energy of a barbell is increased when it is lifted by the weight lifter and work is done on the barbell.

Energy is the ability to do work. We must note that the weightlifter does work in a gravitational field.

Hence, the potential energy of a barbell is increased when it is lifted by the weight lifter and work is done on the barbell.

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Answer:

Yes

Explanation:

I love THAT SONG. And it is a good essay.

Answer: ( yes i do like your essay! )

I am breaking down in tears. /j

I should've expected this and i still fell for it  

Answer:

60Nm

Explanation:

Work done = F * S = 12*10*0.5 = 60Nm

Answer:

Free body diagrams are used to describe situations where several forces act on an object. On the other hand Vector diagrams are used to resolve (break down) a single force into two forces acting as right angles to eachother

Explanation:

Hope this helps !

Answer:Mercury spins slowly on its axis and completes one rotation every 59 Earth days. But when Mercury is moving fastest in its elliptical orbit around the Sun (and it is closest to the Sun), each rotation is not accompanied by sunrise and sunset like it is on most other planets.

Explanation:

Answer:

A reference frame is that frame to which the qualities of an object are related:

For instance - an object may described by - mass, speed, acceleration, size,  etc,

It is important to remember that Newton's Laws of motion do not hold in accelerated reference frames -

Einstein's laws of special relativity are only true in frames that move with contant speed to one another