A horse trainer records the distance a horse travels during three different trials.

What is the horse's average speed in kilometers per minute?

A Horse Trainer Records The Distance A Horse Travels During Three Different Trials. What Is The Horse's

Answers

Answer 1
The average speed is calculated by doing total distance / total time

4.5 + 9.0 + 13.5 = 27km
15 + 30 + 45 = 90min

27 / 90 = 0.3
The horse’s average speed is 0.3km/min
Answer 2

The horse's average speed in kilometers per minute is equal to 0.3 kilometers per minute.

Given the following data:

Time 1 = 15 minutesTime 2 = 30 minutesTime 3 = 45 minutesDistance 1 = 4.5 kilometersDistance 2 = 9.0 kilometersDistance 3 = 13.5 kilometers

To determine the horse's average speed in kilometers per minute:

First of all, we would find the total time and total distance covered:

For total time:

[tex]Total \;time = 15 + 30+45[/tex]

Total time = 90 minutes

For total distance:

[tex]Total \;time = 4.5 + 9.0+13.5[/tex]

Total time = 27 kilometers.

Mathematically, average speed is given by the formula:

[tex]Average\;speed = \frac{Total\;distance}{Total\;time} \\\\Average\;speed = \frac{27}{90}[/tex]

Average speed = 0.3 kilometers per minute.

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Một lò xo nhẹ, treo thẳng đứng có độ cứng k = 100 N/m. Vật nhỏ khối lượng m = 500 g được treo vào đầu dưới của lò xo, dao động điều hòa quanh vị trí cân bằng O. Tính lực đàn hồi của lò xo khi vật trên vị trí cân bằng 9 cm, lấy g = 10 m/s2 .

Answers

Answer:20

Explanation:

A device that absorbs and draws heat from a hot object, dispersing it into the
surroundings, is which one of the following?
A. Heat sink
B. Piston
C. Heat engine
D. Internal combustion engine

Answers

Answer:

A. Heat sink

Explanation:

The stability of a nucleus is based not on the binding energy but on the binding energy per ____________.
A. Neutrino
B. Proton
C. Electron
D. Nucleon

Answers

The answer should be (B) Proton

Hope this helps have a nice day :)

A 10-kg box is being pulled across the table to the right at a constant speed with a force of 50N, directed 30 degrees below the horizontal.

a.) Calculate the force of friction acting on the box.
b.) Calculate the normal force acting on the box.

Answers

Answer:

Explanation:

Assuming the table is horizontal

As speed is constant, friction must exactly balance the horizontal component of the applied force

Ff = 50cos30 = 43 N

The  normal force must oppose both the weight of the box and the vertical component of the applied force.

N = 10(9.8) + 50sin30 = 123 N

The frictional force can be calculated with the angle and mass of the moving body and the normal force acting on it. The normal force on the body is 98 N and the frictional force is 7.712 N.

What is friction?

Friction is the resistance to the movement of a body. If the motion is in a frictionless path then the body will moves in a constant speed in a straight line.

The normal force is the product of mass of the body and gravity 9.8. Then the frictional force can be calculated by the equation with of friction as follows:

Frictional force = F × cos ∅

is the angle.

Thus frictional force = 50N × cos 30

                                 = 7.712 N

The normal force F = m ×  g

                                = 10 Kg × 9.8 m/s²

                                = 98 N.

Therefore, the normal force acting on the body moving with a constant speed and constant force 50 N and horizontal angle 30 degree is 98 N and the frictional force is 7.712 N.

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A 200 kg object is pulled up an incline plane that has friction as the picture above shows. The object is pulled at a constant velocity. Calculate the tension on the rope.
A. 897 N
B. 936 N
C. 852 N
D. 978 N

Answers

Explanation:

the force to pull or push the block upwards (with the rope being parallel to the inclined plane) with 0 acceleration (moves with constant velocity) and therefore the tension on the rope is

Ft = m×g×sin(angle) + y×m×g×cos(angle)

force of gravity force of friction

down (down)

m = the mass of the object = 200kg

g = Earth's gravity acceleration = 9.8m/s²

y = the Greek letter mu, the coefficient of friction (it does not say "static" or "kinetic", I assume kinetic because the object is moving with a constant velocity, but it does not matter here) = 0.05

angle = 25 degrees

the result is N (Newton).

so, let's put the numbers into the equation and calculate :

200×9.8×sin(25) + 0.05×200×9.8×cos(25) =

≈ 828.33 N + 88.82 N ≈ 917.15 N

the closest answer option is B (936 N).

I don't know why there is this difference.

A car moving at 8.5 m/s crashes into a tree and stops in 0.32 s. Calculate the magnitude of the force, in newtons, the seatbelts exerts on a passenger in the car to bring him to a halt. The mass of the passenger is 66.5kg.

Answers

Answer:

Explanation:

I=Q2- Q1

And I = F. (t2-t1)

t = 0,32s

v = 8,5 m/s

Q = m.v

Q=66,5.8,5 = 565,25 kg.m/s

F. (t2-t1) = 565,25

F.0,32 = 565,25

F = 1766,4 N

Help!!!!!!!!!!!!!!!!​

Answers

Answer:

_Sorrrrry_ I can't help u_

2
Ca
+
O
2

2
CaO
What is the product of the reaction

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The product in a chemical reaction is written on the Right side of the arrow, so

the product formed here in given reaction is :

CaO (Calcium Oxide)

While on her concert tour in the US, my Austrian friend Andrea brought along a small electric
fabric-steamer. The steamer draws a current of 4.2 A on a 220 V line in Austria. If she plugged it
into an electrical line in the US, where the household voltage is 110 V, how much current would
the steamer draw? How well do you think it will perform?

Answers

Answer:

A battery connected to a 140 resistor dissipates 17W of power. If the circuit contains only the battery and the resistor, what is the voltage of the battery?

Explanation:

You have discovered a planet that is one-quarter the radius of Earth (Rp = 1/4R⊕) and one-half as massive (Mp = 1/2M⊕). How does the gravity on the surface of this planet compare to the gravity on the surface of Earth (Fgp = XFg⊕)?

Answers

It's 8 times as much as before.

The new planet has the radius of only 1/4th of earth and mass of half that of earth. Then , the gravity on the surface of the new planet will be8 times higher than that of earth.

What is gravitational force?

The gravitational force is the force by which an object attracts other object into its center of mass. Earth attracts every objects on ots surface to the ground by gravitation.

The force of gravitation is directly proportional to the mass and inversely proportional to the distance or radius of the planet.

g =  G m/r²

Where G is the universal gravitational constant.

The new planet has the mass half of that of earth (me) and radius 1/4th of earth.

gn = G me/2 (re/4)²

  = G 16 me/2

  = 8 ge

Where ge is the gravity by earth and gn that of new planet. The gravitational force of the new planet will be 8 times greater than that of earth.

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what happens to the cereal underneath the clear container when it's near a wool?

Answers

Answer:

they can't breath and they gon dead

Explanation:

yum yum yum yum yum

Answer:

the answer is in my mind but not coming in the mouth I'll tell you when I remember ''sorry ''

When Beakman pushes Liza back of the swing he is storing _____ energy.

A. stopped
B. moving
C. potential
D. kinetic

Answers

D kinetic energy

converts potential energy to kinetic energy, then kinetic energy back into potential energy, over and over again. The kinetic energy is the fast part of swinging; it's the speed you have as you rush back and forth.

A diagram is drawn showing a swing set with a swing pulled backward prior to release. The diagram shows how the swing will move forward and then backward after it is initially released. At which point in the diagram is all of the energy gravitational potential energy?

A) as the released swing begins moving backward

B) at the highest point as the swing moves forward

C) when the swing is pulled back prior to release

D) just after release of the swing

Answers

Answer:C) When the swing is pulled back to prior release

Explanation:

This question involves the concepts of the law of conservation of energy, gravitational potential energy, and kinetic energy.

All of the energy is gravitational potential energy at "C) when the swing is pulled back prior to release".

The law of conservation of energy states that at any point the total energy of the swing must be constant, which means:

Total Energy = Gravitational Potential Energy + Kinetic Energy = Constant

It is clear that the swing has a non-zero speed in all given situations except the situation in part C), where the swing is at rest before release. Since the kinetic energy exists due to motion in the object. Hence, the kinetic energy will be zero when the swing is pulled back prior to release. It means all the energy in the swing at this time will be the gravitational potential energy.

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The attached picture explains the law of conservation of energy.

At the instant shown in Figure 3, the blocks are moving toward each other with the same speed of 0.35 m/s. The blocks collide 0.50 seconds later. What is the speed of the two=block system's center of mass just before the blocks collide?

Answers

Answer:

The blocks c

Explanation:

The distance between tow objects is increased by 3 times the original distance. How will this change the force of attraction between the two objects?

Answers

Answer:

force of attraction will be increased by 9

Explanation:

force of attraction is inversely proportional to square of distance

i.e F= 1/

F=1/3R²

F=1/9R

multiply both side by 9

9×F= 9×1/9R

9F= 1/R

so force of attraction is 9 times

Một ô tô khối lượng một tấn chuyển động nhanh dần đều trên một đường bằng, hệ số ma sát giữa bánh xe và mặt đường là 0,1. Lực kéo của động cơ ô tô bằng 1200 N. Lấy g = 10 m/s2. Thời gian cần thiết để ô tô đạt được tốc độ 36 km/h từ trạng thái nghỉ là bao nhiêu?

Answers

The answer is going to be c

A 10 kg box initially at rest accelerates uniformly to a speed of 20 m/s in 2 seconds. Determine the A. energy gained by the block, B. Power developed by the box at the end of 10 seconds.​

Answers

Answer:

20 40

Explanation:

A 10 kg box initially at rest accelerates uniformly to a speed of 20 m/s in 2 seconds, energy gained by the block 2000 J and Power developed by the box at the end of 10 seconds 5000 Watt

What is work done?

The total amount of energy transferred when a force is applied to move an object through some distance

The work done is the multiplication of applied force with displacement.

Work Done = Force * Displacement

As given in the problem A 10 kg box initially at rest accelerates uniformly to a speed of 20 m/s in 2 seconds

By using the first equation of motion

v = u + at

20 = 0 + 2a

a = 10 m/s²

By using the third equation of motion

v² - u² = 2as

20² - 0² = 2×10×s

s = 400/20

s = 20 m

Force = ma

          = 10 ×10

          = 100 N

work done = Force × displacement

                   = 100 ×20

                   = 2000 J

Velocity after 10 seconds

V= u + at

  = 0 + 10×10

  = 100 m/s

work done after 10 seconds

= 1/2mv²

= 0.5×10×10²

=50000 J

Power = work done  / time

           = 50000/10

           = 5000 Watt

Thus, energy gained by the block 2000 J and Power developed by the box at the end of 10 seconds 5000 Watt

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what are the similarities between standard units and non-standard units? ​

Answers

Standard units of measurement are units of measurement that are typically used within each measurement system, such as inches, feet, ounces, pounds, kilograms, or cups. ... Nonstandard units of measurement are units of measurement that aren't typically used, such as a pencil, an arm, a toothpick, or a shoe.

what is meant by cathode rays?
what is radio activity and state three of it's effects?

Answers

1cathode rays plural : the high-speed electrons emitted in a stream from the heated cathode of a vacuum tube

2: a stream of electrons emitted from the cathode of a vacuum tube —usually used in plural

Two balls were dropped at the same time from the top of a ladder. The balls are of equal size but ball A has more mass than Ball B. Which best describes the time it would take for the two balls to hit the ground

A .Not enough information
B. Ball B would hit the ground first
C. Ball A and B will hit the ground at the same time.

Answers

Answer:

A

Explanation:

If we ignore air resistance or friction, the balls would hit the ground at the same time. The question does not state whether or not there is air resistance.

If there was air resistance, ball A would hit the ground first.

Again, there is no information provided on whether is is air resistance or not, so there is not enough information.

Several lawmakers argue that constructing coal plants is a necessity. Which statement describes scientific evidence people can use to disagree with the lawmakers’ claim?

Burning fossil fuels increases greenhouse gas emissions.
Coal mining creates many kinds of jobs.
Energy production rates are the highest with the use of coal plants.
Forests are destroyed as storage facilities for electricity are constructed.

Answers

Answer:

Burning fossil fuels increases greenhouse gas emissions.

Neutrons are found in what part of an atom ?

Answers

Neutrons are found in the nucleus of the cell

4word puzzle about sounds waves down​

Answers

Node?! try that!

I hope this helps! Let me know if you have any questions! Good luck on the rest of your assessment!

Mark this as Brainliest if you get a chance:)

Explain the
difference between an
oxygen atom and a carbon atom

Answers

Answer:

Carbon atoms are made up of 6 protons, 6 electrons, and 6 neutrons, whereas Oxygen atoms are made of 8 protons, 8 neutrons, and 8 electrons.

Explanation:

This may not sound like a big difference at the atomic level, but it is responsible for all of the differences between Oxygen and Carbon.

If a person paddles a canoe up a creek, a distance of 13.09 km, how fast does she need to move in order to get to the end of the creek within 2.371 hours?

Answers

Answer:

Below

Explanation:

To find the velocity of the person you can use this formula

     velocity = displacement / time

     velocity = 13.09 km / 2.371 hours

     velocity = 5.5208 km/h

                   = 5.521 km/h

Hope this helps!

ra body of mass x is raised to a height of 2m above the ground what it's potential energy if the body is allowed to fall what is it's kinetic energy when half way down​

Answers

Answer:

Explanation:

PE = mgh = 2xg

Half way down, half of the potential energy will have been converted.

KE = xg

When Beakman lets go of Liza and she starts moving her stored _____ changed into ____ energy.

A. moving / stopped
B. potential / kinetic
C. stopped / moving
D. kinetic / potential

Answers

the answer for this question is B.

Describe a real life situation in which you have experienced Newtons First Law. Use the words “unbalanced force” and “inertia” in your answer



Plz help

Answers

Answer: Options that describes first law of motion from the question are;

An overall net force must be applied to an object before it can move.

Newton’s first law of motion is also known as the law of inertia.

Newton’s first law applies to an object whether it is moving or not.

Newton's first law states can be regarded as law of inertia. it made us to understand that when a body is resting then it keeps the rest unless there is external force been acted on it or if the body is  moving at a constant speed, it will continue until there is external force acted.

A body will move from its resting only when net force is applied.

Example of this law is seen in when someone is sitting in a car putting on the seat belt.

This law applies to moving object as well as static object.

Therefore, option B,C and E right.

Explanation:

Answer: I would say like if  a person jumps out of a moving vehicle, he falls forward due to inertia of motion.  One example of Newton's first law in real life is, when you are walking with a glass filled with water, you will notice that the water spills at certain locations when you walk at faster pace.

Explanation:

An airplane travels 2400 km at a speed of 600 km/h, decreases its speed to 400 km/h for the next 1200 km and travels the last 2,500 km at a speed of 500 km/h.

Problem 1, Question 1: What is the total travel time?
Total time:
Problem 1, Question 2: Find the average speed of the plane for the trip.
Average speed:

help :D

Answers

Forget the numbers and think about how speed works for a second. If a plane flies at 600km/h, this means that it will fly exactly 600 km in 1 hour. So, how long would it take to fly 2400 km??

2400/600 = 4hours.

Do this for all three and add up the hours.

Total time: 12 hours

Average speed is the total distance / total time.

So,

Add up all the distances and divide by 12.

(2400+1200+2500) / 12

Average speed: 508.33333333 km/h

is the answer 1.05m?? help me please. i just want to confrim my answer :3

Answers

I believe you are correct! Have a good day! <3
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