What is the difference in
momentum between an 87.2 kg
football player running 2.87 m/s and
a 0.0520 kg bullet moving 789 m/s?

Answer:

True

Explanation:

I believe the answer is true.

Answer:

ed

Explanation:

Answer:

B

Explanation:

Answer:

-0.34m/s

Explanation

According to the law of conservation of momentum

m1u1 +m2 u2 = (m1+m2)v

m1 and m2 are the masses

u1 and u2 are the initial velocities

v s the common velocity

Given

m1 = 1.5kg

m2 = 5.2kg

u1 = 2.3m/s

u2 = -1.1m/s (left direction)

Required

Final velocity v of the ball

Substitute into the formula

1.5(2.3)-5.2(1.1) = (1.5+5.2)v

3.46-5.72 = 6.7v

-2.26 = 6.7v

v = -2.26/6.7

v = -0.34m/s

Hence the final velocity of the bowling ball is 0.34m/s towards the left

La velocidad vertical del tanque después de caer 10 m es 14 m/seg .

La velocidad vertical del tanque se calcula mediante la aplicación de la fórmula de velocidad , la componente vertical Vfy, del movimiento horizontal como se muestra a continuación :

Vfy=?

  h = 10 m

                              Fórmula de Velocidad vertical Vfy:

                           Vfy²  = 2*g*h

                            Vfy= √(2*9.8m/seg2* 10m )

                            Vfy= 14 m/seg

Answer:The answer is B: RI/V

Explanation: Because V is divided by I and multiplied by R

A) Pitch depends on the frequency of a sound wave. The higher the pitch, the higher the frequency and the lower the pitch, the lower the frequency. Sound waves have different pitches due to varying frequency levels.

B) Sound is created as the pen vibrates. This vibrations also interacts with the air atoms and molecules, causing them to vibrate too, therefore, creating sound waves. The reason the brain grows annoyed at this continual sound is because the brain will focus on this sound only, causing the brain to go into overdrive, creating annoyance.

C) Sound waves are travelling vibrations of particles. Space does not have any atoms or particles for the sound vibrations to interact with, therefore creating zero sound waves to travel.

Hope this helps!! :))

Answer:

The x-component of [tex]F_{3}[/tex] is 56.148 newtons.

Explanation:

From 1st and 2nd Newton's Law we know that a system is at rest when net acceleration is zero. Then, the vectorial sum of the three forces must be equal to zero. That is:

[tex]\vec F_{1} + \vec F_{2} + \vec F_{3} = \vec O[/tex] (1)

Where:

[tex]\vec F_{1}[/tex], [tex]\vec F_{2}[/tex], [tex]\vec F_{3}[/tex] - External forces exerted on the ring, measured in newtons.

[tex]\vec O[/tex] - Vector zero, measured in newtons.

If we know that [tex]\vec F_{1} = (70.711,70.711)\,[N][/tex], [tex]\vec F_{2} = (-126.859, 46.173)\,[N][/tex], [tex]F_{3} = (F_{3,x},F_{3,y})[/tex] and [tex]\vec O = (0,0)\,[N][/tex], then we construct the following system of linear equations:

[tex]\Sigma F_{x} = 70.711\,N - 126.859\,N +F_{3,x} = 0\,N[/tex] (2)

[tex]\Sigma F_{y} = 70.711\,N + 46.173\,N+F_{3,y} = 0\,N[/tex] (3)

The solution of this system is:

[tex]F_{3,x} = 56.148\,N[/tex], [tex]F_{3,y} = -116.884\,N[/tex]

The x-component of [tex]F_{3}[/tex] is 56.148 newtons.

Answer:

22. 2 sec

23. 3 sec

24. 50 sec

Explanation:

J = (P)*(t)

t = J/P

22.

t = (80 J)/(40 W)

t = 2 s

23.

t = (2,700,000 J)/(900,000 W)

t = 3 s

24.

t = (10,000 J)/(200 W)

t = 50 s

Answer:

It's used to indicate pressure

Answer: The mass of 0.5 mole of element ab is 81.67 g.

Explanation:

According to the mole concept, 1 mole of a substance contains [tex]6.022 \times 10^{22}[/tex]. As, the mass of [tex]2 \times 10^{21}[/tex] atoms is 0.49 g.

So, [tex]\frac{2 \times 10^{21}}{6.022 \times 10^{23}} mol = 0.49 g[/tex]

[tex]0.003 mol = 0.49 g[/tex]

Therefore, mass of 1 mole = [tex]\frac{0.49}{0.003}[/tex]

                                            = 163.33 g/mol

Hence, mass of 0.5 mole of ab element is calculated as follows.

[tex]0.5 mol \times 163.33 g/mol[/tex]

= 81.67 g

Therefore, the mass of 0.5 mole of element ab is 81.67 g.

Answer:

the gravity was pulling the cup to the front of the window even though the wind was pushing it the other way.

Explanation: the gravity must be strong

By using the Newton's first law of Motion, it can be explained why the coffee spilt all over the windshield. This is because there is gravitational force which acts upon it and it pushes the substances in the downward direction towards the Earth.

Newton's first law of Motion states that a body remains in the same state of rest or uniform motion in a straight line unless and until an external force is applied on it. This means that a body will not start moving by itself until and unless an external force acts on it.

In this case, lachance's daughter is trying to pick her coffee cup, the coffee cup at the windshield is spilt which makes it difficult for her to see. This is because, there is the gravitational force or gravity which is pulling the coffee cup to the front of the window even though the wind was pushing it in the other way.

Learn More about Newton's law here:

https://brainly.com/question/15280051

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Answer:

The answer is below.

Explanation:

According to geographical coordinates and related information, when the latitude is lower, that is closer to the equator the temperature becomes warmer. While the far away from the equator the latitude is the temperature decreases.

Similarly, the water bodies have a relative effect that is considered little or less severe on the temperature throughout any of the seasonal period or day and night.

Answer:

In 2019, the IUCN Red List reported approximately 28,000 species of in danger of disappearing from the wild.

Explanation:

The IUCN Red List is a glossary of animal and plant species that are in danger of extinction, dividing the severity of the danger into different colors where red is synonymous with those species in critical danger of disappearing.

The 2019 Red List showed that more than 28,000 species of animals, plants and other living beings are in a situation of critical danger, notable examples being the Iberian Lynx and the Bornean Orangutan, among many others.

Answer:

Option D)Potential energy becomes kinetic energy between points P and Q.

Explanation:

Answer:

The energy the power station would generate in 2 days is 14,400 kW·h

Explanation:

The given parameter for the geothermal plant are;

The power output of the geothermal plant = 300,000 W = 300 kW

The duration for which the energy produced is calculated = 2 days

Therefore, we have;

The number of seconds in 2 days = 2 days × 24 hours/day × 60 min/hr × 60 seconds/min = 172,000 seconds

The number of hours within 2 days = 2 days × 24 hours/day = 48 hours

The energy generated, E = Power × Time the power is utilized

Therefore, the energy the power station would generate in 2 days, [tex]E_{2 \ days}[/tex], is given as follows;

[tex]E_{2 \ days}[/tex] = 300 kW × 48 hours = 14,400 kW·h

Answer:

c - May 21, 1904

Federation lnternational de Football Association was established on May 21, 1904

Explanation:

Answer:

D

Explanation:

Edg2020

Answer:

The same momentum as when on Earth

Explanation:

From a background understanding of science, the mass of an object is constant irrespective of its location.

This implies that the rover has the same mass on the earth as on the moon.

Now, we shall determine the momentum of the rover on Earth and on the Mar.

For Earth:

Let the mass on Earth (Mₑ) = 1 kg

Velocity on Earth (Vₑ) = 30 mph = 30 × 0.447 = 13.41 m/s

Momentum on Earth (Mₒₑ) =?

Momentum = mass × velocity

Mₒₑ = Mₑ × Vₑ

Mₒₑ = 1 × 13.41

Mₒₑ = 13.41 Kgm/s

Thus the momentum of the rover on Earth is 13.41 Kgm/s

For Mar:

Mass on Mar (Mₘ) = Mass on Earth (Mₑ), since mass is constant.

Mass on Mar (Mₘ) = 1 kg

Velocity on Mar (Vₘ) = Velocity on Earth (Vₑ), since the rover move with the same velocity as described by the question.

Velocity on Mar (Vₘ) = 13.41 m/s

Momentum on Mar (Mₒₘ) =?

Momentum = mass × velocity

Mₒₘ = Mₘ × Vₘ

Mₒₘ = 1 × 13.41

Mₒₘ = 13.41 Kgm/s

Therefore, the momentum of the rover on Mar is 13.41 Kgm/s

Summary:

Momentum on Earth (Mₒₑ) = 13.41 Kgm/s

Momentum on Mar (Mₒₘ) = 13.41 Kgm/s

Thus, the rover will have the same momentum as when on earth

The momentum of the object on Mars will be the same as on Earth.

The given parameters;

Weight is a vector quantity because it changes when acceleration due to gravity on the object changes while mass is scalar quantity, with a constant value in all places in the universe.

The momentum of an object is calculated as;

P = mv (kgm/.s)

Since the speed and mass of the object will be the same on both planets, the momentum will also be the same.

Thus, the momentum of the object on Mars will be the same as on Earth.

Learn more here:https://brainly.com/question/20728229

Answer:

i think 2 N right because the wheels have a bigger force so we will subtract both sides which is 2 and right is longer so its 2 N Right?

Answer:

Explanation: Because it was able to exhibit an electromagnetic property hence, it is transverse meaning that

each wave is perpendicular to the direction of propagation.

And recall that an Electromagnetic waves can travel through a vacuum.

Answer:

76 N north-east

Explanation:

V = √(44²+62²) = 76 N

A metal ball and a wooden ball

hope it helps

Answer:

d

Explanation:

Answer:

1 and 2

Explanation:

Answer:

Explanation:

Answer:

I have

Step-by-step explanation:

No idea i just need points sorry wyatt