Two trains leave a train station traveling in the same direction. They leave at the same time. Train A moves at 41.1 mph and Train B moves at 26.5 mph. How long will it take Train A to be 39.1 miles ahead of Train B?

Answer:

the book is 4 meters from the floor

Explanation:

Use the formula for potential energy:

U = m g h

196 J = 5kg 9.8m/s^2 h

h = 196 / (5*9.8 ) m

h = 4 m

Answer:

Probably copper wire

Explanation:

I took the class and that's the only one that sounds right but I'm pretty dum lol

Answer:

A(predicts an organisms ability to adapt to its enviroment, it is not a fact that each organization can adapt)

Explanation:

Answer:

\(\Delta T=38.95^{\circ} C\)

Explanation:

Given that,

Heat measured, Q = 81500 J

Mass of water, m = 0.5 kg

The specific heat of water is 4,184 J/kg °C

We need to find the change in temperature. The heat measured is given by :

\(Q=mc\Delta T\)

Where

\(\Delta T\) is the change in temperature

\(\Delat T=\dfrac{Q}{mc}\\\\\Delat T=\dfrac{81500}{0.5\times 4184 }\\\\\Delta T=38.95^{\circ} C\)

So, the change in temperature is \(38.95^{\circ} C\).

Figure B5.1 is a diagram showing a wave travelling along a string. The wave is propagating in the rightward direction, as indicated by the curved arrows.

Direction is a type of guidance that provides the recipient with specific instructions on how to proceed. Direction can involve information on where to go, what to do, or what to avoid. It could be used to provide instructions on a task, a journey, or an event. Direction could also be used to provide motivation and help someone stay focused on their goals. Direction can be provided verbally, through writing, or through body language. It can come from a supervisor, a teacher, or a parent. Direction is important in helping someone follow their path and achieve their goals.

The wave is depicted by a series of oscillations along the string, represented by the vertical lines. The amplitude of the wave is represented by the distance between the highest and lowest points of the oscillations. As the wave travels in the rightward direction, the oscillations move along the string, and the amplitude remains unchanged.

To learn more about direction

https://brainly.com/question/27854247

#SPJ1

Answer:

pretty sure it is 6km

Explanation:

the car traveled 4km north then 2km west 4+2=6 so yah

Answer:

b

Explanation:

If one ball is dropped at rest from a height of h = 65 m.  The acceleration of the two balls is: -9.8 m/s^2 for both balls.

Let's start by finding the time it takes for the two balls to meet. We know that the ball thrown upward starts from rest, so its initial velocity is 0 m/s. We can use the following kinematic equation:

y = v_i*t + (1/2)at^2

where y is the displacement (in this case, it is the distance between the two balls), v_i is the initial velocity, a is the acceleration, and t is the time. We can set y equal to the initial height of the dropped ball, which is h = 65 m. For the ball thrown upward, the initial position is y = 0.

For the dropped ball:

y = h = 65 m

v_i = 0 m/s

For the ball thrown upward:

y = 0

v_i = 0 m/s

Using the given information, we can solve for t:

h = (1/2)at^2

65 m = (1/2)*(-9.8 m/s^2)t^2

t = sqrt(65 m / (1/2(-9.8 m/s^2))) ≈ 3.64 s

So it takes about 3.64 seconds for the two balls to meet.

Now, we can find the acceleration of the two balls. For the dropped ball, the acceleration is simply the acceleration due to gravity, which is -9.8 m/s^2. For the ball thrown upward, the acceleration is also the acceleration due to gravity, but with a negative sign since it is moving in the opposite direction of gravity. Therefore, the acceleration of the two balls is:

a = -9.8 m/s^2 for both balls

This means that both balls experience the same acceleration due to gravity, regardless of their initial velocities.

Learn more about acceleration here:https://brainly.com/question/605631

#SPJ1

Answer:

12.7m/s

Explanation:

Given parameters:

Mass of the diver  = 77kg

Height  = 8.18m

Unknown:

Speed of the diver before hitting the water = ?

Solution:

The speed of the diver before hitting the water is the final velocity.

       To solve this problem, we use the expression below;

       v² = u²  + 2gH

v is the final velocity

u is the initial velocity

g is the acceleration due to gravity

H is the height

  Now insert the parameters and solve;

 v²   = 0²   + 2 x 9.8 x 8.18

 v²   = 160.328

  v  = 12.7m/s

Time of flight = 1.6 s

Horizontal distance = 64 m

Projectile motion is the form of motion experienced by an object or particle projected into a gravitational field, such as from the surface of the Earth, and moves along a curvilinear path only under the action of gravity.

For the given case,

h = vt + ¹/₂gt²

h = height of tower

v = initial velocity

t = time of flight

55 = 50sin30t + ¹/₂9.8t²

55 = 25t + 4.9t²

4.9t² + 25t - 55 = 0

t = 1.6 s

X = vₓt

X = horizontal distance

vₓ = horizontal velocity

t = time of flight

X =  (50 x cos30) x 1.6

X =  64 m

To know more about projectile motion visit:

https://brainly.com/question/11049671

#SPJ13

Answer:

dog walking

Explanation:

Answer:

its always active

Explanation:

Answer:

8.957 m/s^2

Explanation:

First, let's calculate the mass of the Earth using the formula:

M = (4/3) * π * R^3 * ρ

where:

- π is approximately 3.14159

- R is the radius of the Earth in meters, which is approximately 6,371,000 m

- ρ is the density of the Earth in kg/m^3, which is given as 5540.0 kg/m^3

M = (4/3) * 3.14159 * (6,371,000)^3 * 5540.0

M ≈ 5.972 × 10^24 kg

Now, we can use the formula for gravitational acceleration:

g = (G * M) / r^2

where:

- G is the gravitational constant, which is approximately 6.67430 × 10^-11 m^3/(kg * s^2)

- M is the mass of the Earth, which we calculated as 5.972 × 10^24 kg

- r is the distance from the Earth's center in meters, which is 900,000 m

Plugging in the values, we get:

g = (6.67430 × 10^-11 * 5.972 × 10^24) / (900,000)^2

g ≈ 8.957 m/s^2

Therefore, at a distance of 900.0 km from the Earth's center, the value of gravitational acceleration is approximately 8.957 m/s^2.

In Edgar Allan Poe's poem "The Raven," the speaker's description of the bird evolves throughout the poem, reflecting the changing emotions and perceptions of the speaker. By the end of the poem, the speaker's description of the bird is one of eerie and unsettling admiration.

Initially, the speaker describes the raven as a "stately" and "ebony" bird, highlighting its majestic and imposing presence. As the poem progresses, the speaker's description becomes more vivid and eerie. The bird is referred to as a "prophet" and a "devil," emphasizing its ominous and supernatural qualities. Its eyes are described as "burning" and "demon's," intensifying the sense of unease.

Towards the end of the poem, the speaker's attitude towards the bird shifts. The raven becomes a symbol of despair and sorrow, representing the speaker's torment. The speaker's repeated questioning of the raven about the possibility of being reunited with his lost love, Lenore, showcases his desperation and longing for answers.

In the final stanza of the poem, the speaker describes the bird as a "thing of evil" and a "demon." This description emphasizes the bird's malevolent nature and its power to haunt the speaker's thoughts and torment his soul. Despite its dark and foreboding presence, the speaker cannot help but be captivated and entranced by the raven's presence.

know more about intensifying here:

https://brainly.com/question/31626109

#SPJ8

A current of a 6 flows through a light bulb for 12 s. The total charge that passes through the light bulb during the given time is 72 coulombs.

To calculate the total charge that passes through the light bulb, we need to use the formula Q = I * t, where Q represents the charge in coulombs, I represents the current in amperes, and t represents the time in seconds.

Step 1: Identify the known values:

Current (I) = 6 amperes

Time (t) = 12 seconds

Step 2: Calculate the charge using the formula:

Q = I * t

Step 3: Substitute the known values into the formula:

Q = 6 amperes * 12 seconds

Q = 72 coulombs

Therefore, the total charge that passes through the light bulb during the given time is 72 coulombs.

For more such questions on charge, click on:

https://brainly.com/question/2373424

#SPJ8

Answer:

0.002kg and 0.01cm

Explanation:

500 leaves has a thickness is 5cm

Means I leaf has a thickness of 5/500= 0.01cm

Similarly the mass of one leaf would be 1/500 =0.002kg

As per the given scenario, in this case, the coefficient of friction () is half and the coefficient of restitution (e) is zero.

Identify the body's starting velocity:

We may use the equation of motion to get the body's initial velocity (u)

\(v^2 = u^2 + 2as\)

\(0 = u^2 + 2(-9.8)m/s^2 * h\)

\(u^2 = 19.6h\)

u = √(19.6h)

The body's initial velocity (u) and initial relative velocity (u_rel) are the same.

The body's horizontal velocity immediately following the collision, which is zero, is the final relative velocity (v_rel).

\(e = v_{rel }/ u_{rel}\)

e = 0 / u_rel = 0 / u

Now, one can investigate the forces affecting the body: When a body is on an inclined plane.

There are two main forces at work on it: the frictional force that prevents the body from moving and the gravitational force that pulls it downward (mg).

The gravitational force has two components that act perpendicular to and parallel to the inclined plane, respectively: m*g*cos(45°) and m*g*sin(45°).

Determine the conditions for the body to stop:

μ * N = m * g * sin(45°)

μ * (m * g * cos(45°)) = m * g * sin(45°)

μ * cos(45°) = sin(45°)

(1/2) * cos(45°) = sin(45°)

Simplifying further, we have:

√2 / 4 = √2 / 2

Thus, the body will come to rest following the collision if the equation is valid.

For more details regarding gravitational force, visit:

https://brainly.com/question/29190673

#SPJ1

The potential energy of the roller coaster is 176,400 J (joules).

The potential energy of an object is given by the formula PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height or vertical position of the object.

In this case, the roller coaster is at a peak of 20m and has a mass of 900kg. The acceleration due to gravity, g, is approximately 9.8 \(m/s^2\).

Using the formula, we can calculate the potential energy:

PE = mgh

= (900 kg)(9.8 \(m/s^2\))(20 m)

= 176,400 J

Therefore, the potential energy of the roller coaster is 176,400 J (joules).

Know more about  potential energy    here:

https://brainly.com/question/21175118

#SPJ8

Answer:

Option B is appropriate for this question

false

normal force always acts perpendicular to the contact force

Energy is dissipated as heat from the lamp is

400 kw

It is given that

power of lamp = 100 kw

efficiency = 20%

time = 5 hour

We have to find the energy of lamp

Efficiency is the measure of how completely work input is connected to work output.

Efficiency = work(out)/work(in) * 100%

Efficiency of visible light = 20%

Energy converted to heat = 80%

Energy = Power * time

Energy = 100 kw x 80% x 5 = 400 kw

Hence, Energy dissipated as heat is 400 kw

Learn more about Heat here:

https://brainly.com/question/19666326

#SPJ1

The time required to crumple the barrier and safely slow down the person with a force of 1650 N is approximately C, 1.1 seconds.

To determine the time required to crumple the barrier and safely slow down the person with a maximum force of 1650 N, use the equation of motion:

F = m × a

where:

F = force

m = mass

a = acceleration

Given:

m = 68 kg

F = 1650 N

Find the acceleration (a) first. Rearranging the equation:

a = F / m

Substituting the values:

a = 1650 N / 68 kg

a ≈ 24.26 m/s²

Now, use the equation of motion to find the time (t):

v = u + at

where:

v = final velocity (0 m/s as the person comes to a stop)

u = initial velocity (27 m/s)

a = acceleration (24.26 m/s²)

t = time

Rearranging the equation:

t = (v - u) / a

Substituting the values:

t = (0 m/s - 27 m/s) / 24.26 m/s²

t ≈ -27 m/s / 24.26 m/s²

t ≈ -1.11 s

The negative sign indicates that the time is in the opposite direction to the initial velocity. Taking the absolute value, the time required to crumple the barrier and safely slow down the person with a force of 1650 N is approximately 1.11 seconds.

Find out more on maximum force here: https://brainly.com/question/14178248

#SPJ1

In exothermic reactions, heat and light are released to the surrounding environment. On the other hand, in an endothermic reaction, heat is required and therefore it can be considered as a reactant.

Learn more in:

Answer:

(Question) Which result occurs during an exothermic reaction?

(Answer) Light or heat are released into the environment.

(Question) Which event is an example of an endothermic reaction?

(Answer) photosynthesis

(Question) How is total reaction energy calculated?

(Answer) reactant bond energy – product bond energy

(Question) When producing hydrogen iodide, the energy of the reactants is 581 kJ/mol, and the energy of the products is 590 kJ/mol. The equation is shown.

H2 + I2 → 2HI

What is the total energy of the reaction? Is this an endothermic or exothermic reaction?

(Answer) –9 kJ/mol, exothermic

(Question) Hydrogen bromide breaks down into diatomic hydrogen and bromine in the reaction shown.

2HBr → H2 + Br2

The energy of the reactant is 732 kJ/mol, and the energy of the products is 630 kJ/mol.

What is the total energy of the reaction? Is this reaction endothermic or exothermic?

(Answer) 102 kJ/mol, endothermic

Explanation:

just finished the quick check UwU

Answer:

Answer is in the attachment.

The cell can maintain an electric potential difference across the two ends of the external circuit by supplying energy to the charge.

The movement of a positive test charge from the negative terminal to the positive terminal within the cells requires work to be done on it.

As a result of this motion, the potential energy and electric potential of the charge would both increase.

The positive test charge loses some of its electric potential energy as it passes through the external circuit from the positive terminal to the negative terminal, and by the time it gets back to the negative terminal, it is at a low potential.

The energy required for work on the charge to transport it from the negative to the positive terminal is provided by the cells.

The cell can maintain an electric potential difference across the two ends of the external circuit by supplying energy to the charge.

To learn more about electric potential, click:

https://brainly.com/question/16267680

#SPJ1

I think the highest concentration of solar energy would occur when the Sun is directly overhead, as the angle of incidence is at its highest.

Concentration is the ability to focus on a certain task or activity, while blocking out distractions or other competing activities. It is an important skill to possess in order to be successful in both academic and professional settings. Concentration involves the ability to pay attention to a specific task or activity, while still being able to remember the details and information associated with it.

I think the highest concentration of solar energy would occur when the Sun is directly overhead, as the angle of incidence is at its highest. When the Sun is hovering over the Tropic of Cancer, the angle of incidence would be lower as the Sun is further from the zenith. Similarly, when the Sun is hovering over the Tropic of Capricorn, the angle of incidence would be even lower as the Sun is further from the zenith. Parallax did play a role in my observations as it affected the angle of the Sun's position relative to my location. When making my moon measurements, I noticed that the readings changed depending on the time of day and the phase of the moon. This experience helped me to understand the concepts of azimuth and altitude, as well as how they relate to the angle of incidence of sunlight.

To learn more about  concentration

https://brainly.com/question/29155112

#SPJ1

A fox getting its energy from a mouse and a mouse getting its energy from the grass  shows evidence of the carbon cycle

The carbon cycle is a necessary component within the global interchange between living species and the environment.

Through photosynthesis, plants absorb carbon dioxide from the atmosphere and convert it into vitalizing organic matter for consumption by animals; these organisms expend the energy obtained and consequently expel carbon dioxide back up into the air via respiration.

Moreover, when animals meet their demise and decompose, the carbon in their bodies is redeposited into Earth's soil only to eventually be delivered once again to the atmosphere through erosive activities or those generated from volcanoes.

Read more on carbon cycle here:https://brainly.com/question/12005308

#SPJ1

Answer:

D

Explanation:

A is incorrect because it would actually increase the population...

B is incorrect because other birds do not matter, it is only whooping cranes...

C is incorrect because it would also increase the population.

Answer:

the answer is b because an object in motion stays in motion

The water likely spilled because of inertia of motion such that an object in motion tends to stay in motion. So, option B is correct.

Inertia is defined as the property of matter by which it tends to continue its state of rest or uniform motion.

Here,

When you are travelling in a car, holding a cup of water in one hand and the driver of the car is forced to stop suddenly so that the water in the cup gets spilled out.

When the car was moving, the water in the cup was actually at the same speed relative to the car and cup. When the car is tend to stop suddenly, this causes a sudden change in acceleration of the car and thus the cup. As a result, the water in the cup spills out. This is due to the property of inertia that the water got spilled out.

According to the law of inertia, a body will preserve its state of rest or uniform motion unless an external force acts on it.

Here, the spilling out of water is the application of inertia of motion. That means the the water inside the cup which was moving forward and when the change in acceleration occurred, it got spilled in front of you thus tending to continue its state of motion.

Hence,

The water likely spilled because of inertia of motion such that an object in motion tends to stay in motion.

To learn more about inertia, click:

https://brainly.com/question/769460

#SPJ7