1. A cross country skier averages 3.2 m/s over 9.1 km. How long did the skier's trip
take?

Answers

Answer 1

Answer:

your answer is 12.3

Explanation:

hope it helps : )


Related Questions

A bar magnet is separated four times, the number of monopoles and dipoles formed are __.

[the answer is 0 monopoles and 4 dipoles, but I think it should be 8 dipoles.]
Kindly Help me understand !​

Answers

The characteristics of the magnetism allow to find the results for the questions related to the division of the magnetic bar are:

The magnetic monopoles do not exist. When cutting the magnet there are 4 magnetic dipoles.

The magnetic field is understood today as the effect of the movement of electric charges, in this sense there is no magnetic monopole since the orbital or spin movement of the charges is continuous.

The dipole or magnetic moment is caused by the movement of the electrons around the nucleus, in some cases the movements are in the opposite direction and can be annulled and the electrons grinding on themselves called spin.

A magnet is a material where there is a permanent magnetic field formed by the sum of all the microscopic contributions, this sum gives a dipole or total magnetic moment different from zero.

They indicate that a bar-shaped magnet is cut into four parts, each part forms a smaller magnet, that is, each part is a magnetic dipole.

In conclusion, using the characteristics of magnetism we can find the results for the questions about the division of the magnetic bar are:

The magnetic monopoles do not exist. When cutting the magnet there are 4 magnetic dipoles.

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I need some help

a golfer can hit a golf ball 300 m horizontally. what maximum height would a 301.5 meter drive reach if it was launched at a 25 degree angle above the ground​

Answers

This question involves the concepts of projectile motion, horizontal range, and height.

The maximum height reached by the ball is "35.15 m".

First, we will find out the launch velocity of the projectile motion of the ball, by using the formula of the horizontal range:

[tex]R= \frac{u^2Sin\ 2\theta}{g}\\\\[/tex]

where,

R = horizontal range = 301.5 m

u = launch speed = ?

θ = launch angle = 25°

g = acceleration due to gravity = 9.81 m/s²

Therefore,

[tex]301.5\ m = \frac{u^2Sin\ 50^o}{9.81\ m/s^2}\\\\u = \sqrt{\frac{(301.5\ m)(9.81\ m/s^2)}{Sin\ 50^o}}[/tex]

u = 62.14 m/s

Now, we will find out the maximum height (H) of the projectile motion, using the following formula:

[tex]H = \frac{u^2Sin^2\theta}{2g}\\\\H =\frac{(62.14\ m/s)^2Sin^2(25^o)}{2(9.81\ m/s^2)}[/tex]

H = 35.15 m

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The attached picture shows the projectile motion.

There’s 5.68 s until the end of a "Red Light, Green Light" game, when "Green Light" is called. You start atrest and accelerate at 4.1 m/s2and reach your maximum speed after 1.7 s. You run at your maximum speeduntil you reach the finish line.If the finish line is 32 m away, do you survive the first game? Show your work.

Answers

Answer:

SQUID game imagine

Explanation:

please helllllp shshsu

Answers

pretty sure it’s conduction

NEED HELP!!!! 11 POINTS!!!!!

Jose’s doctor recommends that he add more cardio to his exercise routine. Which exercise would be the BEST choice?
A.
ballet
B.
jogging
C.
bowling
D.
volleyball

PLEASE NO LINKS

Answers

Answer:

B, jogging

Explanation:

i guess because it makes you sweat

Answer:

jogging

Explanation:

run at a steady gentle pace, especially on a regular basis as a form of physical exercise.

on the vertical projection what is the difference between a protected up and down?​

Answers

Explanation:

projected up means you are on the ground throwing a projectile

projected down mean you are on a high place like a cliff or mountain

Which one of these is NOT a rate:
A. 30 miles per gallon (of gasoline)
B. 5 seconds
C. 5 meters per second
D. 5 apples for $1

Answers

Answer:

The answer is B. 5 seconds.

Answer is B. Which is 5 seconds

plss help plss i need it now​

Answers

Answer:

anong grade po. yan? seven po ba yan

where does the largest input of solar energy occur?

Answers

Answer:

the earth

Explanation:

The largest input of solar energy strikes the Earth at the equator.

Why is density such an important physical property?​

Answers

Answer:

Density is important because it determines what substances floats and sinks.

Explanation:

answer asap!!
---------------

Answers

Answer:

conduction

Explanation:

............................

A cart was pushed in a ramp exerting 23N upward creating an angle of 53° N of W. How much force is exerted vertically and horizontally?​

Answers

Explanation:

theta = 90-53(we are getting horizontal angle)

=37

force(F)=23N

vertically =Fsin(theta)=23sin(37)=13.84N

horizontally=Fcos(theta)= 23cos(37)=18.37N

If a cart was pushed in a ramp exerting 23 Newtons upward creating an angle of 53° north of the west, then the horizontal component of the force would be 13.84 Newtons, and the vertical component of the force would be 18.36 Newtons.

What is Newton's second law?

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

As given in the problem if a cart was pushed in a ramp exerting 23 Newtons upward creating an angle of 53° north of the west,

The horizontal component of the force = 23 × cos 53° Newtons

                                                                 =13.84 Newtons

The vertical component of the force =  23 × cos 53° Newtons

                                                           =18.36 Newtons

Thus, the horizontal component of the force would be 13.84 Newtons, and the vertical component of the force would be 18.36 Newtons.

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FIRST TO ANSWER CORRECTLY GETS BRAIBLIEST!!

COLUMN A
1. _______ A
2.________B
3.________C
4________ D
5.________E

COLUMN B

A. brushes
B. Magnets
C. Battery terminals
D. Commutator
E. Armature

Answers

Brushes, battery terminals, commutator, armature, magnets

an object is thrown with an initial speed v near the surface of earth. assume that air resistance is negligible and the gravitational field is constant. if the object is thrown vertically upward, the direction and magnitude of its acceleration while it is in the air is

Answers

Hi there!

a = -9.81 m/s²

When throwing a ball into the air (ignoring air resistance), the acceleration in the vertical direction is ALWAYS constant and equal to the acceleration due to gravity.

In this instance, the acceleration due to gravity is downward, resulting in the object falling. So, we must put a negative sign:

Thus, a = -9.81 m/s².

The velocity of a bus increases from 27km/h to 30m/s in . Calculate its acceleration.

Answers

Answer:

No time interval???

Explanation:

convert from km/h to m/s (speed)

27×1000/3600

27000/3600

=7.5m/s

a= v-u/t

v(final velocity) is 30m/s, u(initial velocity) is 7.5m/s

a= 30-7.5/t

a= 22.5/t (m/)

a ball is thrown upward at an angle what causes the change in the balls velocity?

Answers

Answer:

When a ball is thrown up in the air, the ball's velocity is initially upward. Since gravity pulls the object toward the earth with a constant acceleration g, the magnitude of velocity decreases as the ball approaches maximum height.

5. Calculate the acceleration of a 2 kg block across a table if you push with a force of 20 N and the frictional force is 4 N.

Please show work so I can understand!​

Answers

Answer:

Explanation:hey do you go to GOC too?

when we drink coke it's black in colour but why don't our urine becomes black?​

Answers

Answer:

Because it filters

Explanation:

it filters out the urine, and changes it into nutrients I'm pretty sure

Where are protons and neutrons found in an atom

Answers

Answer:

The Nucleus

Explanation:

Protons and Neutrons are found in the nucleus of an atom.

Answer:

Nucleus

Explanation:

answer asap asap!



-----------------

Answers

Answer:

Neutral

Explanation:

A neutral atom has an equal number of protons and electrons so that the positive and negative charges exactly balance. Since it is the electrons that determine how one atom interacts with another, in the end it is the number of protons in the nucleus that determines the chemical properties of an atom.

A car traveling at 30 m/s speeds up to 35 m/s over a period of 5 seconds. What is the acceleration of the car?

Answers

Answer:

u =30 m/s

v = 35 m/s

t = 5 secs

Explanation:

a = (v- u)/t

a = (35-30)/5

a = 5/5

a = 1 m/s^2

PLS MARK BRAINLIEST

the sound _____ of these vibrations passes along the string​

Answers

Answer:

This results in a wave of vibrations travelling through the air to the ... such as the medium it travels through and the strength of the initial vibration

Explanation:

Answer:

The sound waves of these vibrations passes along the string.

what is the purpose of the magnetic field in a cathode ray tube?

Answers

Answer:

In order to determine if the cathode ray consisted of charged particles, Thomson used magnets and charged plates to deflect the cathode ray. He observed that cathode rays were deflected by a magnetic field in the same manner as a wire carrying an electric current, which was known to be negatively charged.

Explanation:

According to the right-hand rule, the magnetic field causes the electrons to be refracted. Turn on the power strip to learn about the Cathode Ray (electron beam) Deflection by an Electric Field.

What is Magnetic Field?

Magnetic forces can be seen in a magnetic field, an electric current, a changing electric field, or a vector field around a magnet. Magnetic compass needles and other permanent magnets align in the direction of magnetic fields like the one found on Earth. Electrically charged particles are forced to move in a circular or helical pattern by magnetic fields. The operation of electric motors is caused by this force, which is applied to electric currents in wires in a magnetic field.

The Lorentz Force, which is explained by the left-hand rule, has an impact on what happens inside the tube. In accordance with this law, an electron or other charged particle travelling in a magnetic field will be deflected by the field at a right angle to both the field's direction and the direction of the particle.

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If an object has an increasing positive acceleration, what can we assume about the forces on it?

Answers

Answer:

F = M a    is a vector equation

F has the same sign as A and is in the same direction as the vector a

If a is positive then F must also be positive

If an object has an increasing positive acceleration, then  we can assume that there is some unbalanced increasing force acting on it as the force is the product of the mass of the object and the acceleration.

What is Newton's second law?

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

The acceleration of an item rises proportionately to the force applied to it. So, doubling the force also doubles the acceleration.

Since the force is equal to the product of the item's mass and acceleration, if an object is moving at an increasing positive acceleration, we may infer that there is an imbalanced growing force acting on it.

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2 H2O2-> 2H20+02
2. What are the reactants in this reaction?
3. What are the products in this reaction?
4. What happened in this particular reaction? What happens in general decomposition reaction?

Answers

Answer:

This reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen. Add 2 molecules of hydrogen peroxide and 2 molecules of water. Since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

3]Explanation: This reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen. Add 2 molecules of hydrogen peroxide and 2 molecules of water. Since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

4]Two moles of hydrogen peroxide H2O2 decomposes to produce two moles of water H2O and one mole of oxygen gas O2(g) , which then bubbles off

the loudness of a sound is determined by the __________, or height, of the sound wave.

Answers

Answer: Aplitude

Explanation: Loudness depends on the amplitude,or height, of sound waves. The greater the amplitude, the louder the sound perceived. Amplitude is measured in decibels.

Answer:

Amplitude

Explanation:

The loudness of a sound is determined by the amplitude of the wave. In terms of the pattern of a transverse wave, amplitude refers to how "high" and "low" the waves go from the center line.

PF

The average speed of a plane was 600 km/hr. How long did it take

the plane to travel 120 kilometers?

Answers

Answer:

0.2 hours

Explanation:


Guys helppppp thanks so much

Answers

Answer:

4.9 or 49kj not sure hope it helps you

A boy is watching his grandfather fire an old cannon. He notices that whenever the
cannonball is fired, it moves with a very high velocity to the right. He also notices
that when the cannonball is fired, the cannon moves very slowly to the left. How
does conservation of momentum explain these observations?
v cannon
V cannonball
Since the motions of the cannon and cannon ball were caused by the same
event, they must have equal and opposite momentum. Since the cannon has
much more mass, it will have a larger velocity.
The total momentum of the system was zero before the cannon was fired, so
the cannonball and cannon must have equal and opposite momentum. Since
the cannon has much more mass, it will have a smaller velocity.
The cannon gave momentum to the cannon ball, so they both begin to move.
Since the cannon has much more mass, it will have a smaller momentum.
The cannon gave momentum to the cannon ball, so they both begin to move.
Since the cannonball has much less mass, it will have a smaller momentum.

Answers

Answer:

since the cannon ball has much less mass it will have a smaller momentum.

The system's total momentum was zero before the cannon was fired, the momentum of the cannonball and the cannon must be equal and opposing. Since the cannon has much more mass, it will have a smaller velocity.

What is momentum?

The combination of a particle's mass and velocity produces momentum. Momentum has both a direction. The force exerted on a particle is equated to the time rate of change of momentum by Isaac Newton's second equation of motion.

Since there is no external force acting on the system, momentum ought to be conserved in accordance with the law of conservation of momentum.

Since we are aware that momentum is determined by a formula

M = [tex]mass * velocity[/tex]

Here M is the momentum.

Since the system's total momentum was zero before the cannon was fired, the momentum of the cannonball and the cannon must be equal and opposing. The cannon will have a lower velocity because it has a lot greater mass.

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Tính lực tương tác giữa 2 điện tích q1=4.10^-6C và q2=-3.10^-6C cách nhau một 3cm đặt trong dầu hoả = 2

Answers

Explanation:

decimal diamond ml dias and ka n t u t a n mo papa mo

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