Starting from rest, a freely falling object falls 125 meters in?

When a stone is hurled horizontally from the top of a 31.2 m tall cliff, its horizontal initial velocity is 39.25 m/s.

By measuring the ball's diameter d and dividing it by the time t it takes for it to cross the photogate, one can also calculate the ball's starting horizontal velocity. Therefore, Vo = d/t. The kinematics equations of motion can be used to calculate the horizontal velocity of a projectile motion made by a person or an item.

Height of cliff is 31.2 m

distance is 21.4

t = √2h/g

t = √2×31.4/9.8

t = √62.8/9.8

t = 0.80

V = 31.4/0.08

V = 39.25 m/s.

To know more about initial velocity visit:-

https://brainly.com/question/29153562

#SPJ1

Answer:

Time, t = 3.2 ms

Explanation:

It is given that,

Mass of basketball, m = 0.622 kg

Initial velocity, u = 4.23 m/s

Final velocity, v = 3.85 m/s

Average force acting on the ball, F = 72.9 N

We need to find the time of contact of the ball with the floor. Let t is the time of contact. So,

\(F=ma\\\\F=\dfrac{m(v-u)}{t}\\\\t=\dfrac{m(v-u)}{F}\\\\t=\dfrac{0.622\times (3.85-4.23)}{72.9}\\\\t=0.0032\ s\\\\\text{or}\\\\t=3.2\ ms\)

So, the ball is in contact with the floor for 3.2 ms.

The potential difference between the plates will be 1552 Volts.

Voltage, or the difference in electric potential between two points, is defined as the amount of labor per unit of charge needed to move a test charge between the two points.

Given that a 3.7-f capacitor that stores sufficient energy to operate a 75.0-w

The potential difference will be calculated by the formula below:-

Q = I t            

Where I = charge / time

Q = V * C    

V C = I t

V = I t / C

V = 75 C/s x 60 sec / 2.9 faraday

V =  1552 Volts

To know more about potential differences follow

https://brainly.com/question/25923373

#SPJ4

Pretty long so read if you will:

I'm pretty late to this but oh well. Well to start why are people homophobic in the first place? You might not understand as well but that is because me and you are growing up at a time and place where people are encouraged to be themselves and we're embracing people that are different than what is considered normal. Gay marriage was legalized literally in the US in 2015, 5 years ago. I come from Malaysia, one of the few countries where it's illegal to be gay and can cause a death penalty from what I've seen. Obviously I grew up in a place where gay and whatnot were a joke and is wrong. But we moved and I came to the US and my beliefs changes, it also helped that I was literally only 11 so I was more easier to change than adults. Majority of the world honestly, are not as open to the lgbtq+ community as a person in America might think. The belief that it's only a women and men probably stems from the fact that it's how u make babies. And if we know anything, society doesn't like things that are different. To stop people being homophobic you have to stop people from spreading the belief that it's wrong to be gay or bi. This is going to be hard and people really overestimate the world when it comes to change. Peoples belief won't be changed so quick just, change doesn't happen quick. It's going to be a long time and maybe even never, look at racism. We all exist together for so long but there's still racism though much less compared to back then. As long as people stop teaching that next generation, us, that being lgbtq+ is bad, it will decrease but it will take a long time. And as much as I agree we need it to be now, it won't and trying to force something will only cause more backlash. Just try to inform the people around you and understand change does not happen fast, it's slow, especially if it you want it to be permanent.

V = kq1/x1 + kq2/x2 is the formula for the total electric potential at the origin, where k is the Coulomb constant.\(V = (8.99x109 Nm2/C2)(4.60x10-6 C)/(0.0125 m) - (8.99x109 Nm2/C2)(2.14x10-6 C)/(-0.0180 m) = 1.28x105 V\) after plugging in the supplied values.

A) We need to compute the electric potential due to each point charge separately and then sum them up to get the overall electric potential at the origin.

The following formula determines the electric potential caused by a point charge q at a distance r from it:

V = kq / r

where k is equal to 9.109 N/m2/C2, the Coulomb constant.

The distance from the point charge q1 to the origin is r1 = 0.0125 m, with x1 = 1.25 cm = 0.0125 m on the x-axis. The electric potential caused by q1 at the origin is thus:

\(V1 = kq1 / r1 = 9.109 Nm2/C2  4.6010-6 C / 0.0125 m = 165.12 V\)

Keep in mind that the displacement absolute value is always taken to be the distance r. the observation point's vector from the point charge.

The distance from the point charge q2 to the origin is r2 = 0.0180 m and it is situated at x2 = -1.80 cm = -0.0180 m on the x-axis. The electric potential caused by q2 at the origin is thus:

\(V2 = kq2 / r2 = (9 10 9 N m 2/ C 2)  (-2.14 10 6 C) / 0.0180 m = -226.47 V\)

It should be noted that the negative sign in front of q2 denotes a negative electric potential caused by q2.

The sum of V1 and V2 determines the total electric potential at the origin:

\(165.12 V - 226.47 V = -61.35 V, where Vtotal = V1 + V2\)

Therefore, the total electric potential at the origin is -61.35 V.

B) To calculate the point's overall electric potential (0, 1.50 cm), Each point charge's electric potential must first be independently determined, and then added.

First, let's get the distance between each point charge and the y-axis's (0, 1.50 cm) centre. The distance between the point and q1 is:

r1 = √[(0.0150 m)^2 + (0.0125 m)^2] = 0.0191 m

Q2 is located at a distance from the point of:

r2 = √[(0.0150 m)^2 + (-0.0180 m)^2] = 0.0242 m

The point's electric potential as a result of q1 is:

\(V1 = kq1 / r1 = (9 10 9 N m 2/ C 2)  (4.60 10 -6 C) / 0.0191 m = 119.96 V\)

The point's electric potential as a result of q2 is:

\(V2 = kq2 / r2 = (9 10 9 N m 2/ C 2)  (-2.14 10 -6 C) / 0.0242 m = -65.47 V\)

The sum of V1 and V2 determines the point's overall electric potential. V2:

V total = V1 + V2, which equals 119.96 V - 65.47 V, or 54.49 V.

Consequently, 54.49 V is the total electric potential at the position (0, 1.50 cm).

learn more about electric potential here:

https://brainly.com/question/12645463

#SPJ4

The best measure of progress for complex system development is typically a combination of milestones, Key Performance Indicators (KPIs), and iterative feedback loops.

The best measure of progress for complex system development would be a combination of several metrics such as project timelines, budget adherence, stakeholder feedback, quality of deliverables, and the system's overall performance. It is important to have a holistic view of the project and measure progress at different stages of development to ensure that it is on track towards achieving the desired outcomes. Additionally, regular communication and collaboration between the development team and stakeholders is crucial for accurately assessing progress and making necessary adjustments to the project plan.
The best measure of progress for complex system development is typically a combination of milestones, Key Performance Indicators (KPIs), and iterative feedback loops. By tracking these factors, you can effectively monitor and evaluate the progress of the system while ensuring its alignment with overall objectives.

learn more about Key Performance Indicators (KPIs),

https://brainly.com/question/8326923

#SPJ11

Answer:

3333.33 m/s²

Explanation:

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

Total Velocity (v) = 40 m/s

Total Time (t) = 0.012 s.

Average acceleration (a) =..?

Average acceleration can be defined as follow:

Average acceleration (a) = Total velocity (v) / total time (t)

a = v / t

With the above formula, we can obtain the average acceleration of the ball as shown below:

Total Velocity (v) = 40 m/s

Total Time (t) = 0.012 s.

Average acceleration (a) =..?

a = v / t

a = 40 / 0.012

a = 3333.33 m/s²

Therefore, the average acceleration of the ball is 3333.33 m/s².

Answer:

Rolling Friction (round object on a flat surface)  Speeding up.

Explanation:

Gravity continually pulls something such as a table, roster, or person down from the hill. Thus, when you bounce, gravity makes you to arrive on the territory. Friction, however, doesn't pull something down. Friction, however, doesn't pull something downstairs. ... Also, friction always operates identically to the surface in connection because of the sliding movement.

Answer:

c. 80%

Explanation:

Given;

load raised by the machine, L = 360 N

distance through which the load was raised, d = 0.2 m

effort applied, E = 50 N

distance moved by the effort, e = 1.8 m

The efficiency of the machine is calculated as follows;

\(Efficiency = \frac{ 0utput \ work }{1nput \ work} \times 100\% \\\\Efficiency = \frac{Load \ \times \ distance \ moved \ by \ load }{Efort \ \times \ distance \ moved \ by \ effort} \times 100\%\\\\Efficiency = \frac{360 \times 0.2}{50 \times 1.8} \times 100\%\\\\Efficiency =80\%\)

Therefore, the efficiency of the machine is 80%

Answer:   By squeezing the balloon, you reduce the space the gas particles can occupy. As the particles are pushed a bit closer together, they collide with more, so the pressure from the moving gas particles increases. If the volume increases, its pressure decreases.

Answer:

follow me and mark me brainliest

Answer:

Correct Answer: Option B

Explanation:

Explanation

P1/T1 = P2/T2

80/(273+47) = P1/(273+27) = 75Nm-2

Answer: 75.0 Nm^-2

Explanation:

P1/T1 = P2/T2 80/(273+47) = P1/(273+27) = 75Nm-2

For people who don't speak Spanish.

translation:  

Identify the type of variable for each given situation (qualitative: nominal or ordinal) or (quantitative: continuous or discrete)

sorry though I cant answer your question.

0.02 °C  is the resolution of thermometer B while measuring temperature.

Thermometer A= 87.6

Thermometer B=87.4°C

resolution= 87.6- 87.4°C = 0.02 °C

Heat or cold are measured in terms of temperature. It can be defined in terms of a variety of arbitrary scales and shows how heat energy naturally moves from a hotter to a cooler substance (one at a lower temperature). Even if a match burns at a considerably greater temperature than an iceberg, an iceberg has a much higher overall heat energy. The energy of a thermodynamic system differs from temperature.

Temperature, along with pressure, density, and other related qualities, is referred to as an intense property—one that is independent of the amount of material being addressed—in contrast to broad characteristics like mass or volume.

To know more about  temperatures visit : brainly.com/question/14161300

#SPJ1

Answer:

20 m

Explanation:

1 s = 4 m

5 s = ?

? = (4 x 5) = 20 meters

Answer:

distance = 0.8 m

Explanation:

given:

A bike travels at a constant speed of 4.0 m/s for 5.0s.

find:

How far does it go?

solution:

distance = speed / time

distance = 4.0 m/s

                     5 sec.

distance = 0.8 m

Answer:

the constant force applied by Kitty is 8 N.

Explanation:

Given;

work done by Kitty, W = 32 J

distance moved by Kitty's trolley, d = 4 m

Let the constant force applied by Kitty = F

The work done by Kitty is calculated as follows;

W = F x d

F = W / d

F = 32 / 4

F = 8 N.

Therefore, the constant force applied by Kitty is 8 N.

\(a_avg = (22 m/s - 4 m/s) / 3 s = 18 m/s / 3 s = 6 m/s^2,\) Therefore, the average acceleration of the roller coaster car is \(6 m/s^2\).

Newton's first law states that each change in velocity (a change in either magnitude or direction) must have a cause. The law of inertia is another name for this rule. An external force called friction slows down an object.

a_avg = (v_f - v_i) / t

So, the average acceleration is:

a_avg = (22 m/s - 4 m/s) / 3 s

= 18 m/s / 3 s

\(= 6 m/s^2\)

To know more about acceleration  visit:-

https://brainly.com/question/12550364

#SPJ1

In order to momentarily balance the downward gravitational force on a proton with a magnetic force, you would need  To find the magnitude of the magnetic force needed, we can use the equation for the magnetic force on a moving charged particle:

Fm = qvB sin(theta)

Where:
- Fm is the magnetic force
- q is the charge of the particle (in this case, the charge of a proton which is 1.6 x 10^-19 C)
- v is the velocity of the particle (6.20 x 10^4 m/s)
- B is the magnetic field strength
- theta is the angle between the velocity and the magnetic field (since the proton is moving horizontally, theta would be 90 degrees)

Since we want to momentarily balance the gravitational force, the magnitude of the magnetic force should be equal to the weight of the proton (which is equal to its mass multiplied by the acceleration due to gravity).

So, set the magnitude of the magnetic force equal to the weight of the proton:

qvB sin(theta) = mg

Substitute the known values:
(1.6 x 10^-19 C)(6.20 x 10^4 m/s)(B)(sin(90°)) = (mass of proton)(9.8 m/s^2)

Simplify:
9.92 x 10^-15 B = (mass of proton)(9.8 m/s^2)

Solve for B:
B = [(mass of proton)(9.8 m/s^2)] / (9.92 x 10^-15)

You would need to know the mass of the proton to calculate the magnitude of the magnetic field needed.

To know more about force visit:

https://brainly.com/question/30507236

#SPJ11

The energy delivered to a bagel toaster can be calculated based on its resistance of 17 Ω and the time it operates from a 120 V outlet for one minute.

The energy delivered to the toaster can be determined using the formula E = P × t, where E represents energy, P represents power, and t represents time. The power can be calculated using the formula P = V^2 / R, where V is the voltage and R is the resistance. By substituting the given values of voltage (120 V) and resistance (17 Ω) into the power formula, we can calculate the power. Then, multiplying the power by the operating time of one minute (60 seconds), we can determine the energy delivered to the toaster.

to learn more about resistance click here; brainly.com/question/33728800

#SPJ11

Answer:

Mechanical energy is the total energy of the body is made up of scientific energy and potential synergy, these two can be converted into one another without needing help.

The most determining factor of kinetic anergy is speed since it is squared

Explanation:

Mechanical energy is the total energy of the body is made up of scientific energy and potential synergy, these two can be converted into one another without needing help. Kinetic energy is the energy of movement, increasing the speed of the body increases the kinetic energy.

The energy powers an energy from the system configuration when changing to a lower energy configuration this is converted into mechanical energy.

The most determining factor of kinetic anergy is speed since it is squared

To copy noncontiguous slides, open Slide Sorter view, click the first slide thumbnail, press and hold [Ctrl], click each additional slide thumbnail, release the key, and then click the Copy button, option C.

According to the American Heritage Dictionary of Idioms, the expression "thumbnail" first appeared in the mid-19th century to refer to "a drawing the size of the thumbnail." The word was then used figuratively, in both noun and adjective form, to refer to anything small or concise, such as a biographical essay. The word is a reference to the human thumbnail and alludes to the small size of an image or picture, comparable to the size of the human thumbnail. The utilization of "thumbnail" in the particular setting of PC pictures as 'a little graphical portrayal, starting around a bigger realistic, a page format, and so on.' seems to have been used for the first time in the 1980s.

Thumbnails are decreased size renditions of pictures or recordings, used to assist in perceiving and sorting out them, serving similar job for pictures as a typical text with indexing accomplishes for words. Thumbnails are typically utilized by visual search engines, image-organizing programs, and the majority of contemporary desktop environments or operating systems, including Microsoft Windows, macOS, KDE (Linux), and GNOME (Linux). They also avoid having to download larger files when viewing web pages.

Learn more about Slide Sorter:

https://brainly.com/question/30038509

#SPJ4

An appliance cord with a three-prong plug is safer than one with two prongs because it includes a grounding wire.

The third prong is connected to the grounding wire, which provides a safe path for electrical currents to flow in case of a fault or short circuit.

This helps to prevent electric shock or electrocution by directing the electrical current away from the user and into the ground. Without this grounding wire, electrical currents can flow through the user's body, causing injury or death.

Therefore, it is important to use appliances with three-prong plugs and to ensure that the outlets they are plugged into also have three prongs for safety reasons.

The reason an appliance cord with a three-prong plug is safer than one with two prongs is that the third prong provides an additional safety feature called grounding.

This grounding prong prevents electrical shocks and potential damage to the appliance by redirecting excess electrical current away from the user and into the ground. In a two-prong plug, there is no grounding feature, which makes it less safe in comparison.

So, a three-prong plug is safer due to its grounding capability, reducing the risk of electrical shocks and appliance damage.

Learn more about cord:

https://brainly.com/question/30263699

#SPJ11

After obtaining the greatest range and simplifying it, we arrive at the result of 9 2 m. Therefore, the greatest range for a takeoff speed of 8.4 m/s is roughly 7.2 m.

The primary formula for the range since the motion is regarded as a projectile is

R= V²o sin²2α /g

R's value is at its highest when  α= Pi /4  (or 45°)

so the value of

Rmax= V²o sin²2Pi/4 /g = 8.4² * 1 / 9.8 =7.2 m

Rmax= 7.2 m

To know more about projectile visit:-

https://brainly.com/question/11422992

#SPJ4

Immiscible liquids are those which won't mix to give a single phase. Oil and water are examples of immiscible liquids - one floats on top of the other. It explains the background to steam distillation and looks at a simple way of carrying this out.

A.) The speed of Tarzan at the bottom of the swing when he starts from rest is 10.8 m/s.

B.) The speed of Tarzan at the bottom of the swing when he starts with 4 m/s is 11.6 m/s.

Let us solve this problem using law of conservation of energy. The kinetic energy at the bottom of the swing will be equal to the gravitational potential energy at the start of the motion.

U = K

m g h = 1/2 m v²

where,

m is Tarzan's mass

g is acceleration due to gravity

h is initial height

Tarzan's speed at the bottom is v

Re-arranging the equation for making v as subject, we have

v = √ (2 g h + u²)

Initial velocity u = 0.

Therefore, we must determine h, Tarzan's starting height. We know that the length of the swing is L= 30 m and it is initially inclined at θ = 37° with respect to the vertical, so the initial height of Tarzan is given by

h = L - L cosθ = L(1 - cosθ) = 30 ×(1 - cos 37 ) = 6 m

Tarzan's speed, then, at the swing's bottom is

v = √ ( 2 × 9.8 × 6) = 10.8 m/s

B.) If u = 4 m/s,

v = √ 2 g h + u² = √ [2 g L(1 - cosθ) + u²] = √ [ 2 × 9.81× 30 × (1 - cos 37 ) + 4²] = 11.6 m/s

To know more about speed:

https://brainly.com/question/12416249

#SPJ4

As the moon phase approaches full we say the Moon has now completed one half of the lunar month.

This is defined as the time it takes the Moon to pass through all of the phases.

When the moon approaches full then itn has completed one half of the lunar month which is the time taken to form a new moon.

Read more about Moon here https://brainly.com/question/18517840

#SPJ1

When a quality control test is performed to ensure that the penetrating ability of the x-ray beam is accurate, the result must be within what amount of the control panel setting will be ±4 kVp.

Quality control entails testing units to see if they meet the standards for the final product.

The goal of the testing is to evaluate whether any corrective measures are required in the production process. Good quality control assists businesses in meeting customer needs for improved products.

When a quality control test is performed to ensure that the penetrating ability of the x-ray beam is accurate. The results must be under some limits.

Hence the result must be within what amount of the control panel setting will be ±4 kVp.

To learn more about the quality control refer to the link;

https://brainly.com/question/20892066

Answer:

Dispersion

Explanation:

Really hope this helps