How much work is done by a person who
pushes a cant with a force of 200 newtons if
the cart moves 20 meters in the direction
of the fonce.

Answer:

All the answers are solved and explained below.

Explanation:

Note: This questions lacks the initial and most necessary data to answer these following questions. I have found a related question. I will be considering that question to carry out the answers.

Question: A car with a mass of 1000 kg is at rest at a spotlight. when the light turns green, it is pushed by a net force of 2000 N for 10 s. (This was the information missing in this question).

Data Given:

m = 1000 kg

F = 2000N

t = 10s

Q1 Solution:

Acceleration = a = ?

F = ma

a = F/m

a = 2000/ 1000

a = 2 [tex]m/s^{2}[/tex]

Q2: Solution:

Change in velocity = Δv = ?

acceleration = change in velocity / time

a = Δv/t

Δv = axt

Δv = 2 x 10

Δv = 20 m/s

Q3: Solution:

Impulse = I = ?

Impulse = Force x time

I = 2000 x 10

I = 20000 Ns

Q4: Solution:

Change in Momentum = Δp = ?

Δp = mΔv

Δp = 1000 x 20

Δp = 20000 Kgm/s

Q5: Solution:

Final velocity of the car at the end of 10 seconds = vf = ?

Δp = m x Δv

Δp = m x (vf-vi)

Δp = 1000 x (vf - 0 )

20000 = 1000 x vf

vf = 20000/1000

vf = 20 m/s

Q6: Solution:

Change in momentum the car experiences as it continues at this velocity?

Δp = ?

Δp = mΔv

Δp = m x (0)

Δp = 0

Q7: Solution:

Impulse = Change in momentum

Impulse = Δp

Implulse = 0

Q8: Solution:

Change in momentum = Δp = mΔv

Δp = m(vf-vi)

Δp = 1000 x (0-20)

Δp = -20000 kgm/s

Q9: Solution:

Impulse = Δp

Impulse = -20000 Ns

Q10: Solution:

Impulse = ?

Impulse = F x t

F = impulse/t

F = -20000/4s

F = -5000 N

Q11: Solution:

F = ma

a = ?

a = F/m

a = -5000/1000

a = -5[tex]m/s^{2}[/tex]

Answer:

We know that the gravitational acceleration in the surface of the Earth can be written as:

g = G*M/r^2

Where:

M = mass of the Earth

r = radius of the Earth.

G = gravitational constant.

The weight of an object of mass m, is written as:

W = m*g = m*(G*M/r^2)

Now, if we move our object to a place that has a mass equal to 1/6 times the mass of the Earth, and 1/3 the radius of the earth.

The gravitational acceleration on this planet is written as:

g' = G*(M/6)/(r/3)^2 = (1/6)*(G*M)/(r^2/9) = (9/6)*(G*M/r^2) = (3/2)*g

then the weight on this planet is:

W' = m*g' = m*(3/2)*g = (3/2)*(m*g)

and m*g was the weight on Earth, then:

W' = (3/2)*(m*g) = (3/2)*W

The new weight is 3/2 times the weight on Earth.

Answer:

52.5 g of the salt

Explanation:

From the question given above, we were told that concentration of the mixture that is needed can be obtained as by dissolving 35 g of salt in 1000 mL of water.

Thus, we can obtain the mass of the salt needed to make 1500 mL of the salt water mixture as follow:

35 g of salt dissolves in 1000 mL of water.

Therefore, Xg of the salt will dissolve in 1500 mL of water i.e

Xg of salt = (35 × 1500)/1000

Xg of salt = 52.5 g

Thus, 52.5 g of the salt is needed to make 1500 mL of the salt water mixture.

Answer:

[tex]magnetite[/tex]

[tex]hope \: helps...[/tex]

Given that,

6/7 and 24/28

To find,

The above number are in proportion or not.

Solution,

First number is 6/7

Other number is 24/28

Multiply numerator and denominator by 4 to the first number.

[tex]\dfrac{6}{7}=\dfrac{6}{7}\times \dfrac{4}{4}\\\\=\dfrac{6\times 4}{7\times 4}\\\\=\dfrac{24}{28}[/tex]

So, 6/7 and 24/28 are in proportion.

Fraction A is proportional to fraction B because the value of fraction A is equal to fraction B.

Given the following data:

In this exercise, you're required to determine whether or not the two fractions are proportionate i.e whether fraction A is proportional to fraction B.

Two fractions are considered to be proportionate when the value of fraction A is equal to fraction B.

We would write fraction B in its simplest form by dividing both the numerator and denominator by their highest common factor (HCF).

HCF of 24 and 28 = 4.

Dividing by 4, we have:

[tex]Fraction\;B =\frac{24}{28}=\frac{6}{7}[/tex]

In conclusion, fraction A is proportional to fraction B because the value of fraction A is equal to fraction B.

Read more: https://brainly.com/question/18676621

A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.

A matchstick has a lot of substance energy set aside in it. Right when the match is struck, it consumes and the engineered energy in it produces heat energy and light energy.

Chemical energy is the energy that is released when organic compounds engage in a chemical reaction and change into other substances. Batteries, food, and gas are a few examples of chemical energy storage mediums.

The types of energy are as follows:

The energy can not be made and it can not be vanished. But it can be transform from one form to another form.

A matchstick has a ton of substance energy put away in it. At the point when the match is struck, it consumes and the synthetic energy in it produces heat energy and light energy.

Learn more about energy:

https://brainly.com/question/16182853

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Answer:

[tex]1.28 \times 10 ^{-3} m^3/s[/tex]

Explanation:

Given that the radius of the pipe, r =0.0112 m

So, the area of the cross-section, [tex]a= \pi (0.0112)^2 = 3.941\times 10^{-4} m^2[/tex]

Speed of water in the pipe, v=3.25 m/s

Volume flow rate =[tex]av= 3.941\times 10^{-4} \times 3.25 = 1.28\times 10 ^{-3} m^3/s[/tex]

Hence, the volume flow rate is [tex]1.28 \times 10 ^{-3} m^3/s[/tex]

Answer:

For Acellus the answer is 0.00128

Explanation:

Trust me

Answer:

P = 24525 [Pa]

Explanation:

The pressure at the bottom of any vessel can be determined, only by knowing the depth or height of the liquid level. By means of the following equation.

[tex]P=Ro*g*h[/tex]

where:

P = pressure [Pa]

Ro = density of the water = 1000 [kg/m³]

g = gravity acceleration = 9.81 [m/s²]

h = elevation = 2.5 [m]

Now replacing:

[tex]P=1000*9.81*2.5\\P=24525 [Pa][/tex]

Answer:

c

Explanation:

Answer:

Explanation:

A military jet cruising at an altitude of 12.0 km and speed of 1200 km/h burns fuel at the rate of 80.1 L/min. How would you calculate the amount of fuel the jet consumes on a 750 km mission?

In order to calculate the amount of fuel that would be consumed, first, there is a need to find the time it will take to complete the 750 km mission.

Recall that: speed = distance/time, at a speed of 1200 km/h, the time taken to cover a distance of 750 km would be;

time = distance/speed

      = 750/1200 = 0.625 h

The rate of fuel burning is 80.1 Liters in a minute, there are 60 minutes in 1 hr;

1 hr = 60 minutes

0.625 h = 0.625 x 60 = 37.5 minutes

It takes 37.5 minutes to cover 750 km and the fuel burning rate is 80.1 liters per minute, hence, the amount of fuel consumed by the jet would be;

80.1 x 37.5 = 3000 liters

Answer:

The speed and direction of the tangled players is 2.89 m/s towards right.

Explanation:

Given;

mass of the player heading right, m₁ = 40 kg

initial velocity of the player heading right, u₁ = 9.0 m/s

mass of the player heading left, m₂ = 50 kg

initial velocity of the player heading left, u₂ = -2.0 m/s

let the speed of the tangled players = v

Apply the law of conservation of linear momentum;

m₁u₁ + m₂u₂ = v(m₁ + m₂)

(40 x 9) + (50 x - 2) = v(40 + 50)

360 - 100 = v(90)

260 = v(90)

v = 260 / 90

v = 2.89 m/s (towards right, since it is in position direction)

Therefore, the speed and direction of the tangled players is 2.89 m/s towards right.

Answer:

The answer is below

Explanation:

The equation for a linear line graph is given by:

y = mx + b, where y and x are variables, m is the slope of the graph and b is the y intercept (that is value of y when x is zero).

The slope (m) of a line passing through two points [tex](x_1,y_1)\ and\ (x_2,y_2)[/tex] is given by:

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

A) The first line passes through the point (0, 0) and (10, 60). It is represented as (time, velocity). Hence the slope is:

[tex]m=\frac{60 -0}{10-0}=6\ m/min^2[/tex]

B) The second line passes through the point (10, 60) and (15, 60). Hence the slope is:

[tex]m=\frac{60 -60}{15-10}=0\ m/min^2[/tex]

C) The third line passes through the point (15, 60) and (40, -40). Hence the slope is:

[tex]m=\frac{-40 -60}{40-15}=-4\ m/min^2[/tex]

D) The third line passes through the point (40, -40) and (55, 0). Hence the slope is:

[tex]m=\frac{0 -(-40)}{55-40}=2.67\ m/min^2[/tex]

Answer:

its 24 hours

Explanation:

12 hours during the night and 12 hours during the day

Yes that's right...did anyone tell you something else?

Answer:

88.14 m/s

Explanation:

From the question given above, the following data were obtained:

Radius (r) = length of blade = 80 m

Revolution (rev) = 1

Time (t) = 5.7 s

Velocity (v) =?

The velocity of the blade can be obtained by using the following formula:

v = (rev × 2πr) / t

NOTE: Pi (π) = 3.14

v = (1 × 2 × 3.14 × 80) / 5.7

v = 502.4 / 5.7

v = 88.14 m/s

Therefore, the velocity of the blade is 88.14 m/s

Answer:

Workdone = 113778 Joules

Explanation:

Given the following data;

Force = 903N

Distance = 126m

To find the workdone;

Workdone = force * distance

Substituting into the equation, we have

Workdone = 903 * 126

Workdone = 113778 Joules

Therefore, the amount of work, in joules, the gravity did on the asteroid is 113778.

Answer:

We must duplicate the length of the rope (R'=2R) to get

[tex]F'=\frac{1}{2}F[/tex]

Explanation:

The equation of the centripetal force is given by:

[tex]F_{c}=ma_{c}[/tex]

[tex]F_{c}=m\frac{v^{2}}{R}[/tex]

Where:

R is the length of the rope

m is the mass of the object

v is the speed of the object

If we want to reduce the centripetal force in half, we can duplicate the length of the rope (R'=2R), which means:

[tex]F'_{c}=m\frac{v^{2}}{R'}[/tex]

[tex]F'_{c}=m\frac{v^{2}}{2R}[/tex]

[tex]F'_{c}=\frac{1}{2}F_{c}[/tex]

I hope it helps you!

Answer:

B or C

Explanation:

i don't if I'm right or not

Answer:

The answer is 5.0

Explanation:

Hope that helped :D

Answer:

A. Asymptotic giant branch star

Explanation:

Hope this helped.

Answer:

asymptotic giant branch star

Explanation:

Plato/Edmentum

Answer:

ANSWER : 2000 / 40 = 50 m / s

Answer:

9800 J

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 5 kg

Height (h) = 200 m

Potential energy (PE) =?

Potential energy (PE) is the energy stored in an object by virtue of its location. Mathematically, it is expressed as:

PE = mgh

Where:

PE => is the potential energy.

m => is the mass of the object.

g => is the acceleration due to gravity.

h => is the height to which the object is located.

With the above formula, we can obtain the potential energy of the ball at its original height as follow:

Mass (m) = 5 kg

Height (h) = 200 m

Acceleration due to gravity (g) = 9.8 m/s²

Potential energy (PE) =?

PE = mgh

PE = 5 × 9.8 × 200

PE = 9800 J

Therefore, the potential energy of the ball at its original height is 9800 J

Answer:

the light is reflected, because light is white when the spectrum is combined, and white reflects white. that's why wearing a white shirt outside feels cooler than wearing a black shirt, since it doesn't absorb light.

Answer:

All the light is reflected, so the shirt appears white.

Explanation:

Answer:

shivering raises your body temperature

Answer:

D

Explanation:

Answer:

spring 1 has less potential energy

Explanation:

since spring 2 is clampped down further it will have a greater effect but since sping 1 is barely clamped down it wont show as much energy

Explanation:

Helium is the type of atom, with 2 protons in the nucleus.

He-3 (which is the proper form), is an isotope of helium that has an atomic number of 3 (so 2 protons and 1 electron).

The most abundant helium isotope is He-4, just an extra fact.