A 4.0 kg dog runs from one end of a 21 kg canoe to the other, a distance of 4.9 m. Assuming negligible water resistance, how far does the canoe move in metres?

Answers

Answer 1

The distance traveled by the canoe in the water is 0.93 m.

The given parameters;

mass of the dog, m = 4.0 kgmass of the canoe, = 21 kgdistance traveled by the dog, d = 4.9 m

Apply the principle of conservation of linear momentum to determine the distance traveled by the canoe;

[tex]m_1v_1 = m_2 v_2\\\\m_1(\frac{d_1}{t} ) = m_2(\frac{d_2}{t} )\\\\4(4.9) = 21(d_2)\\\\d_2 = \frac{4(4.9)}{21} \\\\d_2 = 0.93 \ m[/tex]

Thus, the distance traveled by the canoe in the water is 0.93 m.

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Related Questions

1) In which of these examples is the greatest movement occurring? A) A B) B C) C D) D

Answers

Answer:d

Explanation:

an object that covers more distance in the same amount of time has a higher speed.

true or false

Answers

Answer:

true

Explanation:

Answer: its true btw :(

How is the amount of oxygen in ocean water affected by temperature?

Answers

Answer:

The amount of oxygen in ocean water increases as temperature increases. Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there. Nutrients, minerals, and gases are more available to marine life in the bottom layers of the ocean.

Explanation:

. A student times a car traveling a distance of 2 m. She finds that it takes the car 5 s to
travel the first meter and then another 8 s to travel the second meter. Is the car traveling
at a constant speed? How do you know?

Answers

No, the car travels 1 metre in 5s at the start which is 0.2m/s, while the second meter it travels one metre in 8 seconds which is 0.125 m/s, the speed changes therefore it is not constant during the two metres the car travels

Question 10..help me

Answers

Answer:

Go to high ground, as high as possible.

unit conversion - miles/h to metres/s​

Answers

Answer:

120 miles/h = 53.6448 m/s

Explanation:

1 mile per hour = 0.44704 m/s

120 * 0.44704

= 53. 6448 m/s

Sebastián midió un trozo de plástico en un momento donde la temperatura era alta, y luego a la noche volvió a medir y no medía lo mismo. ¿Qué pasó?

Answers

English:

The piece of plastic most likely cooled.

/

Español:

Lo más probable es que la pieza de plástico se haya enfriado.

Question 11 (5 points)
If a force of 10.8 newtons is applied to an object that has a mass of 4.6 kg, what will
be the object's acceleration?
*Include ABBREVIATED units in your answer
*Round your answer to 1 decimal place

Answers

Answer:

2.3 m/s2

Explanation:

F = ma

a = F/m

a = 10.8 / 4.6

a = 2.3 m/s2

I hope this helps.

is there anyone who lives in colorado​

Answers

Answer:

not me

Explanation:

Nope I live in Cali ;)

Which of the following statements supports the claim that a planet travels around a star in an elliptical orbit? (1 point)
Every 30 days, the area swept in space by the planet is the same.
Every 30 days, the distance traveled by the planet is different.
Every 30 days, the speed the planet is moving is different.

I only

I and II

II and III

I, II, and III

Answers

Answer:

A

Explanation:

if it was in the same place it wold be a pattern which is what is usually seen in orbits

5 differences between mass and weight

Answers

Answer:

The mass is essentially "how much stuff" is in an object. ... Weight: There is a gravitational interaction between objects that have mass. If you consider an object interacting with the Earth, this force is called the weight. The unit for weight is the Newton (same as for any other force)

Explanation:

For spring break you are traveling to San Diego. The trip is 1,746.4 miles and the trip takes 20.1 hours. How fast will you be traveling (in miles per hour)?

Answers

Answer:

86 mph

Explanation:

brainliest pls

The length of a certain wire is kept same while its radius is doubled. What is the new resistance of this wire

Answers

Answer:

R = K L / A        resistance proportional to length and inversely proportional  

to area

R2 / R1 = A1 / A2 = A1 /  (4 A1) = 1 / 4

R2 = R1! / 4

According to Boyle's law, as volume decreases, pressure ____________ , and as volume increases, pressure ____________ .

Answers

Answer:

In chemistry, according to Boyle's law it tells us that the pressure and volume of an ideal gas are inversely proportional. The pressure has an inverse relationship with the volume. As the volume increases two times, then the pressure of the gas decreases two times.

Explanation:

how would a flashing red light appear as it fell into a black hole?

Answers

Answer:

it would be crushed by the weight and force of the red hole so it wouldn't be possible.

but hypothetically, I personally think the darkness will act as a light conductor and color the bright light just how the sun *bright light* covers the light from our phones. even with the brightness up, the lights to bright. but for the black hole, I think it would be that thr dark is too dark so you can't see. like when you look directly at something in the dark and you can't see it. if you look somewhere demi close to it you can though.

It couldn't be done since the red hole would crush it under its weight and force. However, in a hypothetical situation, I believe the blackness will serve as a light conductor and tint the brilliant light similarly to how the sun's bright light shades the lighting from our phones. Even when brightness is increased, the lights are too bright. For the black hole, I believe the problem would be that it is too dark, and you can't see. Similar to when you stare directly at someone in the dark, and you cannot see it. However, you can if you look somewhat nearby.

What is a black hole?

A black hole is a sector of spacetime where gravity is so powerful that nothing can leave from it, not even electromagnetic radiation like light. A sufficiently compacted mass can distort time to create a black hole, as per generalized relativity theory. The event horizon is the time when there is no way out. According to general relativity, it has no locally observable characteristics, despite having a significant impact on the outcome and circumstances of an item crossing it.

To know more about Black Hole:

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A 800 Kg car and driver accelerates at a rate of 35 m/s/s. What force is necessary to bring the car to a complete stop?

Answers

Answer:

Your answer would be 28,000 N (newtons).

Explanation:

We'd simply get this by using the formula:

force = mass × acceleration

The information that we have from the question is that the force is 800 times 35.

Now, all we have to do is multiply 800 by 35, and we have our answer of 28,000 N.

I hope I helped, and a Brainliest is always appreciated! ☺

when drawing a scatter diagram, along which axis is the explanatory variable placed? along which axis is the response variable placed?

Answers

The explanatory variable is placed on the x-axis and the response variable is placed on the y-axis.

QUESTION 1:
What orbital pattern do the planets follow?
A circular
B elliptical
C rectangular

Answers

the counterclockwise direction (right-hand rule) as seen from above the ecliptic. This is called direct motion. The opposite direction is called retrograde. Hope this helps

Answer:

Planets generally follow elliptical orbits.

The eccentricity describes the ellipticity of the orbit, that is, the departure of an orbit from a circular orbit.

A light bulb is basically a resistor that gets so hot that it glows, emitting light. For this tutorial we will assume the resistor in the light bulb is ohmic (that means Ohm's law applies to the resistor). The rate of energy emitted by the light bulb is its output power, commonly referred to as luminosity (brighter means more luminous). Hook up a light bulb to a 5-V battery. Right-click (or control-click) on the light bulb, and change its resistance. How does the brightness of the light bulb depend on its resistance?
A. The brightness of the light bulb is independent of its resistance. It only depends on the voltage of the battery.
B. The light bulb gets brighter as the resistance is increased.
C. The light bulb gets dimmer as the resistance is increased.

Answers

Answer:

b

Explanation:

a car traveling at 60m/s accelerates at 2 m/s for 30s.calculate how far it has traveled during this time​

Answers

Answer:

2,7 km

Explanation:

You should remember from theory that

[tex]s=s_0 + v_0\Delta t + \frac12 a(\Delta t)^2[/tex]. Let's substitute values, remembering that we are interested in the difference in position [tex]\Delta s = s-s_0[/tex]

[tex]\Delta s = 60(30) +\frac12 2 (30)^2 = 2700m[/tex]

Answer:

it's average acceleration is 12 mph

A block weighing 10 newtons is on a ramp inclined at 30° to the horizontal. A 3-newton force of friction acts on the

block as it is pulled up the ramp at a constant velocity. The force applied to pull the box up the ramp acts parallel to the

incline. Draw the FBD for this problem and determine the magnitude of the force applied.

Answers

The force applied to pull the box up the ramp acts parallel to the incline is 8N

The force applied to pull the box is expressed as:

[tex]F_N = F_m + F_f[/tex]

Fm is the moving force

Ff is the force of friction

Get the moving force and frictional fice

[tex]F_m = 10sin30^0 = 5N\\F_f = 3N[/tex]

The force applied to pull the box up the ramp acts parallel to the incline = 5N + 3N  = 8N

Hence the force applied to pull the box up the ramp acts parallel to the incline is 8N

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Calculate the maximum height a ball reaches when thrown straight up at a velocity of 10m/s

Answers

Answer:

5.1m

Explanation:

Use the fourth key equation of accelerated motion

vf^2=vi^2+2aΔd

we know vf is = 0 because that is when the ball reaches it's peak (not going up anymore)

0=vi^2+2aΔd

and we can rearrange for Δd, which is what you need

-vi^2=2aΔd

Δd = -vi^2/2a

Now we can plug in the values

Δd = -vi^2/2a

Δd = -(10m/s)^2/2(-9.8)

Δd = -100/-18.6

Δd = 5.10m

A charged particle of mass m and charge q moving in an electric field e has an acceleration a given by , where q and e are constants. Find.

Answers

The acceleration of the particle at the given charge, electric field and mass is [tex]\frac{qE}{m}[/tex].

The given parameters;

mass of the particle, = mcharge of the particle, = qelectric field, = E

The acceleration of the particle is calculated as follows;

Newton's second law : F = ma

Coulomb's force: F = qE

Equate the two forces as follows;

[tex]ma = qE\\\\a = \frac{qE}{m}[/tex]

Thus, the acceleration of the particle at the given charge, electric field and mass is [tex]\frac{qE}{m}[/tex].

Learn more about Coulomb's force here: https://brainly.com/question/15379673

Giải câu 2 của bài tập trên

Answers

Answer:

LETTER C IS THE ANSWER

Explanation:

this is my answer

which of the following correctly describes the velocity and acceleration of the object after 4s?

Answers

Answer:

C

Explanation:

The acceleration will be negative, as in the problem statement, the upwards direction is defined as positive (the object is shot upwards and has a positive velocity), so immediately, we can eliminate A and B.

You can then use the kinematics equation:

[tex]v=v_o+at[/tex], where

a= -9.8 m/s^2 (acceleration due to gravity)

t= 4 s (time)

v[tex]_0[/tex]= 20 m/s (initial speed)

when you solve, the final velocity is -19.2 m/s, so the velocity is negative (the object is on its way down).  

A 36 kg wagon is accelerated across a level surface at 0.9 m/s ^ 2 What net force in Newtons that acts on the wagon ?

Answers

Answer:

32.4 N

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

mass = 36 kg

acceleration = 0.9 m/s²

We have

force = 36 × 0.9 = 32.4

We have the final answer as

32.4 N

Hope this helps you

whats the two factors that determine the amount of kinetic energy

Answers

Answer:    mass and speed.

Explanation:       The two main factors that affect kinetic energy are mass and speed. Why? Because the motion of an object depends on how fast it's traveling.

when primary colors are mixed together, they create what?

Answers

Answer:

secondary colours yeah

What is the net force on a water bottle?

Answers

Answer:

if it is not moving it is zero, like all things that aren't in motion

Explanation:

Answer:

Note that net force on the bottle is zero.

Explanation:

If the 10v battery were replaced by a 15v battery would the current through the 70-ohm resistor increase decrease or remain the same?

Answers

Answer:

I think it would increase sorry if I'm wrong

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