a. Calculate the gravitational force between two objects of mass 25 kg and 20 kg separated by a distance of 5 m. (1.33 × JO⁹N) 1030 1.​

Answer:

A.) 4 revolution

B.) 0.2 revolution

C.) 4 seconds

D.) 2.75 m/s

Explanation:

Given that a merry-go-round a.k.a "the spinny thing" is rotating at 15 RPM, and has a radius of 1.75 m

Solution

1 revolution = 2πr

Where r = 1.75m

A. How many revolutions will it make in 3 minutes?

(2π × 1.75) / 3

10.9955 / 3

3.665 RPM

Number of revolution = 15 / 3.665

Number of revolution = 4 revolution

B. How many revolutions will it make in 10.0 seconds?

First convert 10 seconds to minutes

10/60 = 0.167 minute

(2π × 1.75) / 0.167

10.9955 / 0.167

65.973

Number of revolution = 15 / 65.973

Number of revolution = 0.2 revolution

C. How long does it take for a person to make 1 complete revolution?

15 = 1 / t

Make t the subject of formula

t = 1/15

t = 0.0667 minute

t = 4 seconds

D. What is the velocity in m/s of person standing on its edge?

Velocity in m/ s will be:

Velocity = (15 × 2pi × r) / 60

Velocity = 164.9334 / 60

Velocity = 2.75 m/s

Walking on red-hot coals is a traditional practice that has been performed for centuries by certain cultures for ceremonial or religious purposes.

While it may seem like a dangerous or painful activity, it is possible to walk on hot coals without getting your feet burned by following some basic guidelines:

Prepare the fire: The fire should be built with small, dry pieces of wood, and the coals should be allowed to burn down until they are glowing red and no longer producing flames.

Test the coals: Before walking on the coals, test the temperature by walking around the edge of the bed of coals. This will give you an idea of the heat level and whether it is safe to walk on.

Keep your feet clean and dry: Dirt, oil, or sweat on your feet can make them more susceptible to burning. Before walking on the coals, make sure your feet are clean and dry.

Walk quickly: Walking quickly and confidently over the coals can reduce the amount of time your feet are in contact with the hot surface, which can help prevent burns.

Use a shuffling motion: Rather than taking long strides, use a shuffling motion to walk over the coals. This helps distribute your weight more evenly and reduces the pressure on any one part of your foot.

Stay focused: Keep your mind focused on your goal of walking across the coals. Avoid distractions and maintain a positive attitude.

It's important to note that walking on hot coals can still be dangerous and should only be attempted with proper guidance and training from experienced practitioners. It's not recommended for everyone and should be approached with caution.

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"The planet which is smallest of the inner planets and looks very much like earth’s moon is called mercury."

Mercury is the smallest of the terrestrial planets and the innermost planet, coming the closest to our Sun.

The planets Mercury, Venus, Earth, and Mars are referred described as terrestrial due to their compact, rocky surfaces similar to Earth's terra firma. The terrestrial planets are the four that are closest to the sun.

For instance, the inner planets are substantially smaller than the outer planets in terms of size. This is because the inner planets are solid and more compact, whereas the outer planets are gaseous. As a result, the inner planets have a higher density than the outer planets.

Earth is the largest, densest, and third inner planet out of the four. It is the only planet in the solar system that currently possesses liquid water, making it the only one that can support life.

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If the total resistance is to be same, then the diameter of the new wire should be two times of the replaced wire.

The resistance of a wire is given by,

R = 4pL/πd²

Where,

R is the resistance,

p(rho) is the resistivity,

L is the length of the wire,

d is the are diameter of the wire.

The length of the replaced wire is four time of the previous wire and it is made up of same material. So, the resistivity will be same and it is said that the resistance has to be same,

So, we can write the new diameter d' in the relation as,

R = 4p4L/π(d')²

d'² = 4(4pL/πR

Putting, (4pL/πR) = d²,

d'² = 4d²

d' = 2d

The new diameter has to be two times of the previous diameter.

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Answer:

21 years and 97 days

Explanation:

I think

Answer:

The Coriolus effect causes the spin in a hurricane

The center of a hurricane is called the eye

Hurricanes form over warm ocean water in the tropics

Explanation:

Answer: The Coriolus effect causes the spin in a hurricane

The center of a hurricane is called the eye

Hurricanes form over warm ocean water in the tropics

Explanation:

I got it right on edge! Plz mark brainlist love you all <3

Answer:

C = 1.01

Explanation:

Given that,

Mass, m = 75 kg

The terminal velocity of the mass, \(v_t=60\ m/s\)

Area of cross section, \(A=0.33\ m^2\)

We need to find the drag coefficient. At terminal velocity, the weight is balanced by the drag on the object. So,

Weight of the object = drag force

R = W

or

\(\dfrac{1}{2}\rho CAv_t^2=mg\)

Where

\(\rho\) is the density of air = 1.225 kg/m³

C is drag coefficient

So,

\(C=\dfrac{2mg}{\rho Av_t^2}\\\\C=\dfrac{2\times 75\times 9.8}{1.225\times 0.33\times (60)^2}\\\\C=1.01\)

So, the drag coefficient is 1.01.

The net force applied to the object equals the mass of the object multiplied by the amount of its acceleration." The net force acting on the soccer ball is equal to the mass of the soccer ball multiplied by its change in velocity each second (its acceleration).

Answer:

convex write convex only don't write convex lens

Explanation:

We have demonstrated that (pω)ω∈Ω is the point mass function of some distribution, and that the random variable X has a point mass function PX equal to (pω)ω∈Ω.

In order to show that (pω)ω∈Ω is the point mass function of some distribution, we need to demonstrate that it satisfies the properties of a probability distribution.

a) Let's consider the properties of a probability distribution. Firstly, the values of pω must be non-negative for all ω ∈ Ω. This is true since pω is defined as the product of two non-negative values hω1 and hω2.

Secondly, the sum of probabilities over all possible outcomes must be equal to 1. In this case, we need to show that the sum of (pω)ω∈Ω over all possible ω in Ω is equal to 1. To do this, we can consider the sum:

Σ(pω)ω∈Ω = Σ(hω1 hω2)ω∈Ω

By the properties of the point mass function h, we know that Σhω1 = 1 and Σhω2 = 1. Therefore, the above expression becomes:

Σ(pω)ω∈Ω = Σ(hω1 hω2)ω∈Ω = 1 * 1 = 1

Thus, we have shown that (pω)ω∈Ω satisfies the properties of a probability distribution.

b) Now let's consider the random variable X(ω) = ω1 + ω2 and show that its point mass function PX is equal to (pω)ω∈Ω.

To calculate PX(x) = P({ω ∈ Ω : X(ω) = x}), we need to consider the event where the sum of the components ω1 and ω2 is equal to x. This can be expressed as:

{ω ∈ Ω : X(ω) = x} = {(ω1, ω2) ∈ Ω : ω1 + ω2 = x}

Now, notice that this event is equivalent to the event {ω1 = n, ω2 = x - n} for any fixed n. The probability of this event is given by pω1 pω2 = hω1 hω2, which matches the point mass function (pω)ω∈Ω.

By considering all possible values of n, we can cover all the cases for X(ω) = x, and therefore, we have shown that PX(x) is equal to (pω)ω∈Ω.

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Answer:

The force that holds the gases in the sun.

The force that causes a ball you throw in the air to come down again.

The force that causes a car to coast downhill even when you aren't stepping on the gas.

The force that causes a glass you drop to fall to the floor.

Explanation:

Hope, these examples may help you

Explanation:

800 km per her because you have to divide 7200 by 9

Answer:

800 km/hr

Explanation:

7200 km divided by 9 hr=800 km/hr :)

Answer:

increase distance

Explanation:

Inclined planes make it easier to move objects to a higher elevation. The sloping surface of the inclined plane supports part of the weight of the object as it moves up the slope. As a result, it takes less force to move the object uphill.

Answer:

Hello your answer would be increase of distance

Explanation:

I know that because than you would have to go upward with the object.

It would take you approximately 1.54 years to make the trip to the star 65 light-years away at the speed that contracts the distance to 10 light-years.

A light-year is a unit of distance used in astronomy that measures the distance light travels in one year, which is about 5.88 trillion miles.

Distance is a measure of the amount of space between two objects, points, or locations, usually measured in units such as miles or kilometers.

To travel to a star 65 light-years away at a speed that makes the distance seem only 10 light-years, you are experiencing a length contraction due to traveling at a significant fraction of the speed of light. To calculate the time it would take to make the trip, you can use the formula:
Time = (Contracted Distance) / (Speed)
First, find the speed at which you are traveling by dividing the actual distance by the contracted distance:
Speed = 65 light-years / 10 light-years = 6.5c (where c is the speed of light)
Now, use the formula to find the time it would take:
Time = 10 light-years / 6.5c ≈ 1.54 years
It would take you approximately 1.54 years to make the trip to the star 65 light-years away at the speed that contracts the distance to 10 light-years

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Answer:

Explanation:

HELP ME WRITE A ONE PAGE ESSAY TO EXPLAIN THE AUTHOR'S PURPOSE IN WRITING HOM SMART ARE ANIMAL

Answer:

The measurement of an object's motion with respect to any other object that is moving or stationary is called Relative Motion.

Answer:

adolescence:)

Explanation:

Adolescence is the developmental period during which a person will experience the most amount of physical change. So, the correct option is B.

The periods of development of a person is defined as the period of time or the stages of life during which the person grows up from an infant to an adult.

Here,

The developmental period of humans includes the different stages of their life such as infancy, early childhood, middle childhood, adolescence, early adulthood, middle adulthood and old age.

Adolescence is an important developmental period of a person that results in the more amount of physical changes in their body.

The physical changes that are occurring inside and out of the body during the period of adolescence is known as puberty. This happens due to the release and variations of some hormones in our body.

The physical changes that happens to our body during adolescence includes the change in body structure and shape, formation of facial hair and pubic hair, change in voice, etc.

During puberty stage, a hormone called testosterone or male hormone is released in boys.

A hormone called estrogen is released during puberty in girls.

These hormonal actions causes the various physical changes in the body.

Hence,

Adolescence is the developmental period during which a person will experience the most amount of physical change.

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Answer:

Honestly I cant understand that so please explain it someone

Explanation:

Answer: One example of a body-centered crystal is iron, which has a BCC (body-centered cubic) crystal structure. In a BCC structure, the atoms are arranged in a cube with one atom in the center of the cube and eight atoms at the corners. In this diagram, the circles represent iron atoms. The large circle at the center of the cube is an iron atom that is shared by eight adjacent unit cells. The smaller circles at the corners of the cube are individual iron atoms that are not shared by adjacent unit cells. The diagonal of the cube is the body diagonal, which passes through the center of the cube and connects opposite corners.

Explanation:

v(speed) = wavelenght x frequency

v = 0.579 m x 4 hz = 2.32 m/s

Momentum=mass*velocity=40,000*11=440,000 kg m/s.

The word "momentum" is frequently used in sports. A squad that is moving forward and has momentum will be difficult to stop. A team that is genuinely moving forward and gaining momentum will be challenging to stop.

A physics phrase, momentum describes the amount of motion that an item has. The momentum belongs to a sports team that is actively playing. An object has momentum if it is moving or in motion.

The definition of momentum is "mass in motion." Since every item has mass, if it is moving, it must have momentum because its mass is in motion.

Therefore, Momentum=mass*velocity=40,000*11=440,000 kg m/s.

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Answer:

1) Acids have a sour taste , Bases have a bitter taste.

2) Acids turn blue litmus paper into red , Bases turn red litmus paper into blue.

3) Acids react with most metals to form Hydrogen gas but only a few base react with a few metals to form Hydrogen gas

4) Both will conduct electricity. Both acids & bases are good electrolytes. Strong acids & bases conduct more electricity than that of weak acids & bases

Fill in the blanks with the properties of acids and bases as follows:

The properties of acids are as follows:

Therefore, fill in the blanks with the properties of acids and bases are well described above.

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Answer:

the density of water is 1 and tin is 7.31 if i remember right

Explanation:

Answer:

The answer is

Explanation:

The velocity or speed of an object can be found by using the formula

\(velocity \: = \frac{distance}{time} \)

From the question

time taken to travel = 10 hours

distance covered = 550 miles

Substitute the values into the above formula and solve for the velocity

That's

\(velocity = \frac{550}{10} \)

We have the final answer as

Hope this helps you

An example where an object on Earth follows Newton's first law is a ball rolling on the ground.

Newton's first law of motion states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Examples of Newton's first law of motion;

Thus, an example where an object on Earth follows Newton's first law is a ball rolling on the ground.

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He's accelerating at 3 m/s² .  That means his speed is increasing by 3 m/s every second.At the end of 8 seconds, his speed is (8 x 3 m/s)  =  24 m/s .He's been moving south for the whole 8 seconds.So at the end of that time, his velocity is                          24 m/s south .

Answer:

Unbalanced forces change the motion of an object. If an object is at rest and an unbalanced force pushes or pulls the object, it will move. Unbalanced forces can also change the speed or direction of an object that is already in motion.

Answer: Snowy and rainy

Explanation: