The displacement of an object moving 330 km North for 2 hours and an additional 220 km North for 5 hours is?

Answer:

   a = 8.4 m / s²

Explanation:

The mean acceleration is defined by

          a = (v_f- v₀) / (t_f - t₀)

where v are the final and initial velocities, respectively and t is the time interval

Let's apply this equation to our case

the final velocity is 99 m / s and the initial velocity is 57 m / s

         a = (99 - 57) / (15 - 10)

         a = 8.4 m / s²

Answer:

speeding up is the answer

Explanation:

from the graph it can be seen that as the time (horizontal axis) increases the speed of vehicle (vertical axis) increases

Answer:

One that is larger than the object and real

Explanation:

Answer: the material involved in the change is structurally the same before and after the change. Types of some physical changes are texture, shape, temperature, and a change in the state of matter. A change in the texture of a substance is a change in the way it feels

Explanation:

The gas's internal energy that expands from I to F changes by 1015 J.

Since the gas is expanding and energy is added to it by heat, the change in internal energy of the gas can be calculated using the first law of thermodynamics, which states that:

ΔU = Q - W

where ΔU = change in internal energy,

Q = heat added to the system, 465 J and

W = work done by the system.

Assuming that the process is quasi-static use approximation known as the "staircase approximation."

By adding up the work done in each step, find that the total work done by the gas is approximately -550 J. The negative sign indicates that work is done on the gas.

Therefore, using the first law of thermodynamics, we can calculate the change in internal energy of the gas as:

ΔU = Q - W

ΔU = 465 J - (-550 J)

ΔU = 1015 J

Therefore, the change in internal energy of the gas is 1015 J.

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The speed of the block when it has moved a distance of 0.0200 m from its initial position is 0.29 m/s.

The mass of the block is 2.55 Kg. Coefficient of kinetic friction is 0.45. Spring constant is 870N/m. The final compression of the spring is 0.0160 meters. The block is moved by distance of 0.0200 meters.

By considering the block-spring system, we can use Work energy theorem here,

According to work energy theorem,

Work done by conservative forces on the body + Work done by none conservative forces = Total change in kinetic energy of the body.

Work done by Conservative forces = 1/2Kx².

Where,

K is spring constant,

x is the compression in spring,

Work done by non-conservative forces = umgd

Where,

u is the coefficient of kinetic friction,

m is mass of the block,

d is the distance by which the block moves,

Here, we will take spring force as positive because the spring force and displacement both are in same direction,

Putting all the values,

1/2Kx² - umgd = 1/2mV² - 1/2mU²

1/2(870)(0.016)² - 0.45(2.55)(9.8)(0.02) = 1/2(2.55)V²

0.11136 - 0.22491= (1.275)V²

0.11355/1.275 = V²

V = 0.29 m/s.

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Answer:

that should be the right answer

Answer:

Explanation:

I'm going to guess that you want the net force.

These two forces are acting in opposite directions. Therefore the forces are subtracted in effect.

F = F1 - F2

F1 = 22N to the right

F2 = 13N to the left

F = 22 - 13 = 9 N to the right.

Specifying the direction is very important. Forces do have directions and you must specify what that is. Otherwise, the question should be marked incorrect.

The easiest way to do 20 Newton meters of work would be to apply a force of 20 N over a distance of 1 meter. Option C is the correct answer.

The work done on an object is calculated by multiplying the force applied to the object by the distance over which it is applied. Thus, to do 20 Newton meters of work, any combination of force and distance that gives a product of 20 Nm is sufficient.

Option A applies a force of 2 N over a distance of 10 m, resulting in a work of (2 N) x (10 m) = 20 Nm.

Option B applies a force of 4 N over the same distance of 10 m, resulting in a work of (4 N) x (10 m) = 40 Nm, which is more than the required amount of work.

Option C applies a force of 20 N over a distance of 1 m, resulting in a work of (20 N) x (1 m) = 20 Nm, which is the required amount of work. Hence, the answer.

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Answer:

Stage one of sleep, also known as the transitional phase, occurs when one finds themselves floating in and out of consciousness. During this NREM stage, you may be partially awake while your mind begins to drift off. This period of drowsiness eventually leads to a light sleep

Explanation:

i found it on google

Answer:

3. years

Explanation:

The independent variable is the x axis of graph

Answer:

Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

Answer:

false

Explanation:

The average reaction time for humans is 0.25 seconds to a visual stimulus, 0.17 for an audio stimulus, and 0.15 seconds for a touch stimulus.

Answer:

Both

Explanation:

Because Ramesh has said that there are two buckets full of water

By comparing the weight of the two buckets, he can conclude which one has more water.

We know that we have two full buckets of water, but we do not know if both buckets have the same volume.

The only way to determine which bucket has more water is to see which one is heavier (more water means more mass, which means more weight).

Then Ramesh can lift both buckets a little bit, and with that, he can estimate which one is heavier. And with that, he can conclude which one has more water.

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By supplying the fundamental knowledge required to create new instruments and techniques for medical use, physics enhances our quality of life

From can openers, light bulbs, and mobile phones to muscles, lungs, and brains; from paintings, piccolos, and pirouettes to cameras, vehicles, and cathedrals; from earthquakes, tsunamis, and storms to quarks, DNA, and black holes, physics aids us in understanding the workings of the world around us.

The science of physics is the most fundamental and has many applications in contemporary technology. Because it makes it possible for smartphones, computers, televisions, watches, and many other modern technologies to function automatically, physics is crucial to modern technology.

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Answer:

Workdone = 147Nm

Explanation:

Given the following data;

Mass = 5kg

Height = 3m

We know that acceleration due to gravity is 9.8m/s²

First of all, we would find the force applied;

\( Force = mass * acceleration \)

Force = 5*9.8

Force = 49N

Now, to find the workdone;

\( Workdone = force * distance \)

Substituting into the equation, we have;

Workdone = 49 * 3

Workdone = 147Nm

Answer:

11.6km

4.4km in the negative direction

Explanation:

Distance is the total length of path covered and traveled by a body.

So, for this car on a straight line;

  Total distance  = 8km + 3.6km  = 11.6km

Displacement is the distance traveled along a path and the direction it takes.

It is a vector quantity with magnitude and directional attributes.

For this journey;

 Displacement  = 8km  - 3.6km  = 4.4km in the negative direction.

Answer:

well you want to add 88.2 and s2.

Explanation:

Answer:

杰恩斯克克斯克奇沃伊斯克克斯克什德布德克什恩克恩德恩克恩茨克杰兹姆克斯恩斯姆斯姆德恩德姆德武伊乔奥斯克斯杰德布德赫德夫赫富伊什杰吉迪赫德赫夫赫德

Answer:

Scientists learn more about the natural world through investigation by identifying a problem, researching related information, designing and conducting an investigation, analyzing the results, evaluating the conclusion, and communicating the findings. Engineers follow similar steps when creating new products or solutions through technological design. The four stages of technological design include identifying a need, designing and implementing a solution, and evaluating the solution.

The correct statement is (d) The charge on the plates is increased four times its original value.

What is parallel plate capacitor?  

A parallel plate capacitor is a type of capacitor that consists of two parallel conductive plates separated by a dielectric material. It is a type of capacitor used in electrical circuits to store electrical energy. The plates are usually made of metal and the dielectric material is usually a thin non-conductive material like paper or plastic. The size of the capacitor is determined by the distance between the plates and the dielectric material.

This is because the charge on the capacitor plates is proportional to the voltage across the plates and the capacitance, which is given by the formula C = ε_0 * A / d, where ε_0 is the electric constant and A is the area of the plates.

When the plate separation is decreased to d/4, the capacitance of the capacitor becomes C' = ε_0 * A / (d/4) = 4 * ε_0 * A / d, and thus the charge on the plates becomes Q' = C' * V = 4 * Q.

Therefore, The charge on the plates is increased four times its original value is the correct answer.

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2A

Given ,

Resistance=60

V=12

V=IR

I=V/R

I=120/60=2A

The pace at which electrons flow past a location in a complete electrical circuit is defined as current. At its most fundamental, current Means flow.

An ampere (AM-pir), sometimes known as an amp, is the international unit for measuring current. It denotes the number of electrons (also known as "electrical charge") that pass across a location in a circuit over a specific time period.

A current of one ampere indicates that one coulomb of electrons—that is, 6.24 billion billion (6.24 x 1018) electrons—moves across a circuit in one second. The method is comparable to determining how many gallons move through a single spot in a pipe in one minute (gallons per minute, or GPM).

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Answer:

We believe that everyone deserves access to clear, factual information that helps them educate themselves on the issues of the day and the things that pique their curiosity. This month we’re aiming to raise 3,000 new gifts in order to keep our 2023 coverage, including everything on Vox.com, free — because we believe everyone deserves the chance to access information that helps them learn about the world. This year, alone, our generous supporters helped keep over 2,500 articles, 100 videos, and 650 Vox podcasts that have informed and educated millions of people around the world free. We’re so close to our goal of raising 3,000 new gifts by December 31. If you value our work, please help us close the gap by making a one-time gift to Vox today.

A program that could do an instantaneous analysis of video motion will be useful it in a sportscast to analyze events as they occur.

A motion video is defined as the display of video images at a rate (such as thirty frames per second) that causes objects to appear to move smoothly and continuously.

Sports inherently involve fast and accurate motion, which can be difficult for competitors to master but also for coaches and trainers to analyze and audiences to follow. Because of the nature of most sports, monitoring with sensors or other devices attached to players or equipment is generally not possible. This opens up a plethora of opportunities for the use of computer vision techniques to assist competitors, coaches, and the audience

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Answer:

The value is \(v = 3.75 \ m/s \)

Explanation:

From the question we are told that

The height of the ball above the ground is \(h = 1 \ m\)

The angle is \(\theta = 37 ^o\)

The distance of Alice from Bob is d = 50 m

The initial speed of ball is u = 20 m/s

Generally the height of the ball is mathematically represented as

\(h = -u sin(\theta)t + \frac{1}{2} (g) t^2\)

=> \(1 = -20 sin(37)t + \frac{1}{2} * 9.8 t^2\)

=> \(1 = -12t + 4.9 t^2\)

=> \( 4.9 t^2 - 12t -1 = 0\)

using quadratic formula we have that

\(t = 2.536 \ s\)

The other value of time obtained is negative so we would not consider it as time can not be negative

Generally the distance the ball traveled in the horizontal direction is

\(s = ucos(\theta ) * t\)

=> \(s = 20 * cos (37 )* 2.536 \)

=> \(s = 40.5 \ m \)

Generally the distance that Alice will travel before she get to the ball is

\(L = d - s\)

=> \(L = 50 - 40.5 \)

=> \(L = 9.5 \ m \)

Generally the minimum speed of Alice is mathematically represented as

\(v = \frac{ 9.5}{ 2.536}\)

\(v = 3.75 \ m/s \)

Answer:

Explanation:

When a physical change occurs, the mass of the substance is conserved. This means that the total mass of the substance remains the same from beginning to end. The physical properties of the substance, such as size and shape, may change, but the amount of matter in the substance does not change.

( sample response )

Answer:

most bad weather arrives from the west

Explanation:

At different latitudes, the Earth has conveyor belts of air which affect weather like the westerlies and the trade winds. North America is most influenced by the westerlies, which come from the west