What is the time interval in which the average velocity is Negative?

Answers

Answer 1

Explanation:

Average velocity indicates direction and can be represented as a negative number when the displacement is in the negative direction. Average speed does not indicate direction and can only be positive or zero.


Related Questions

What is the common property of the elements pinctogen

Answers

Answer:

The pnictogens consist of two non-metals, two metalloids, one metal, and one element with unknown chemical properties. All the elements in the group are solids at room temperature, except for nitrogen which is gaseous at room temperature.

2. If the ball has a velocity of 2.3 m/s, how long does it take it to go 1.1 m?
s

Answers

Answer:

2 seconds lol im just a kid but I know these lol who has tiktok

Students in a science class were provided with this image and asked to identify which color of light would refract the most if white light was passed through a prism?which student below identified the correct color of light with the proper justification?

Answers

Violet would refract the most as it has the shortest wavelength amongst the visible spectrum.

The identification of the correct color of the light with the proper justification would be by student 4: violet, because it has the highest frequency, therefore the correct answer is option D.

What is Wavelength?

It can be understood in terms of the distance between any two similar successive points across any wave for example wavelength can be calculated by measuring the distance between any two successive crests.

As given in the problem, students in a science class were provided with this image and asked to identify which color of light would refract the most if white light was passed through a prism.

Student 4 would correctly identify and justify violet as the appropriate hue of the light since it has the greatest frequency, making option D the right response.

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The motion of a car on a position time graph is represented with a horizontal tine What does this indicate about the car's motion?

Answers

Answer:

Position-Time graphs display the motion of a object by showing the changes of velocity with respect to time.

The motion of a car on a position-time graph that is represented with a horizontal line indicates that the car has stopped moving.

A straight line with a positive slope indicates that the car is moving at a constant velocity, and thus the slope is constant. On the other hand, a curve with a changing slope, shows that the velocity is changing.

How could fluid friction be decressed

Answers

Answer:The fluid friction or drag can be reduced are minimised by giving special shape called streamlined shape to the objects which Move through fluids like air or water

Explanation:

plz mark brainlyest

HELPP!! Does anybody have the answer key to Lab Report: Conservation of Linear Momentum for my online class for physics?? WILL GIVE 80points

Answers

Answer:

Try copy and pasting the intructions it into google, and it should pop up if it exists.

Hope this helps.

Explanation:

Answer:

Send me the download of the lab and I will complete it for you

How long does it take for skin to replace itself

Answers

Throughout your life, your skin will change constantly, for better or worse. In fact, your skin will regenerate itself approximately every 27 days. Proper skin care is essential to maintaining the health and vitality of this protective organ.

What is the net force required to accelerate a 1.1 kg box at a rate of 2.8
m/s??

Answers

Answer:

Fnet = 13.86N

Explanation:

Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.

Mathematically, net force is given by the formula;

[tex] Fnet = Fapp + Fg[/tex]

Where;

Fnet is the net force Fapp is the applied forceFg is the force due to gravitation

Given the following data;

Mass = 1.1kg

Acceleration = 2.8m/s²

To find the applied force;

[tex] Fapp = ma[/tex]

Substituting into the equation, we have;

[tex] Fapp = 1.1 * 2.8[/tex]

Fapp = 3.08N

To find the gravitational force;

We know that acceleration due to gravity, g = 9.8m/s²

[tex] Fg = mg[/tex]

Substituting into the equation;

[tex] Fg = 1.1 * 9.8[/tex]

Fg = 10.78N

To find the net force;

[tex] Fnet = Fapp + Fg[/tex]

Substituting into the equation, we have;

[tex] Fnet = 3.08 + 10.78[/tex]

Fnet = 13.86N

Therefore, the net force required is 13.86N

6. A light ray strikes a reflective plane surface at an angle of 560 with the surface.
a) Find the angle of incidence.
b) Find the angle of reflection.
c) Find the angle made by the reflected ray and the surface.
d) Find the angle made by the incident and reflected rays.

Answers

Answer:

deez nouts

Explanation:

A force of 5 N gives to mass my and an acceleration of 8m/s2 and a mass m2
an acceleration of 24m/s2. What acceleration would it give if both masses are
tied together

Answers

Answer:

a=6m/sec²

Explanation:

f=5 N

a1=8m/sec²

a2=24m/sec

m1=f/a1=5/8kg

m2=f/a2=5/24kg

New, f=(m1+m2)a

a=5/5/8+5/24=5/15+5/24=24*5/20

a=6m/sec²

When a wire moves through a magnetic field, an electric current is produced in the wire. Why does this phenomenon occur?

Answers

Answer:

The negative charges and positive charges in the wire are pushed in the opposite directions by the magnetic field .

Explanation:

Hope this helps

When a wire moves through a magnetic field, an electric current is produced in the wire, and the phenomenon to which this is referring is called electromagnetic induction, as presented in option A.

What is electromagnetic induction?

A magnetic field is a region in space where a magnetic force can be detected, so when a wire moves through a magnetic field, the magnetic force exerted on the wire generates a voltage, and the voltage creates an electric current in the wire. This electromagnetic induction phenomenon occurs because of the movement of charged particles within the wire, and this phenomenon can be explained by Faraday's Law of Electromagnetic Induction.

Hence, an electric current is produced in the wire, and the phenomenon to which this is referring is called electromagnetic induction, as presented in option A.

Learn more about electromagnetic induction here.

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The question is incomplete, complete question is below

When a wire moves through a magnetic field, an electric current is produced in the wire. Why does this phenomenon occur?

A) electromagnetic induction

B)magnetic force

A baseball bat is a lever. Which of the following explains how a baseball bat differs from a lever like a pry bar?

Answers

Complete question is;

A baseball bat is a lever. Which of the following explains how a baseball bat differs from a lever like a pry bar?

A) In a baseball bat, effort force is smaller and is applied over a large distance, while the resistance force is smaller and is applied over a long distance.

B) In a baseball bat, effort force is smaller and is applied over a large distance, while the resistance force is smaller and is applied over a short distance.

C) In a baseball bat, effort force is larger and is applied over a short distance, while the resistance force is smaller and is applied over a long distance.

D) In a baseball bat, effort force is larger and is applied over a short distance, while the resistance force is smaller and is applied over a short distance.

Answer:

C) In a baseball bat, effort force is larger and is applied over a short distance, while the resistance force is smaller and is applied over a long distance.

Explanation:

The correct answer is option C. This is because unlike in a pry bar, the effort force when swinging a baseball bat is larger and it is applied over a short distance; and in return the resisting force is smaller and it's applied over a long distance.

can anyone solve this?
Carol pushes down at an angle of 30 degrees from the vertical on a 10.0 kg wood crate causing the crate to move across a wood floor at a constant velocity of 2.0 m/s. How much force does Carol exert on the crate? (μs = 0.5 and μk = 0.2)

Answers

Answer:

F = 39.2 N

Explanation:

Since, the object is in uniform motion. Therefore, the frictional force on object will be:

Frictional Force = μk N = μk mg

where,

μk = coefficient of kinetic friction = 0.2

m = mass of crate = 10 kg

g = 9.8 m/s²

Therefore,

Frictional Force = (0.2)(10 kg)(9.8 m/s²)

Frictional Force = 19.6 N

The horizontal component of force must be equal to this frictional force to continue the uniform motion:

F Sin 30° = 19.6 N

F = 19.6 N/Sin 30°

F = 39.2 N

A B-52 bomber jet flies at a horizontal velocity of 286.2 m/s and at an altitude of 7500 m above the ground.
How far away horizontally should a payload be dropped to land on a target?

Answers

Answer:

you need to divide 7500/286.2

Describe the importance that keystone species have in the environment. What would happen if these species disappeared? How would it affect the local ecosystems?

Answers

Answer:

See the answer below

Explanation:

The keystone species of an environment are those species of organisms that are highly influential to the functioning of the ecosystem without whom the ecosystem would be drastically affected, lose its structure, or cease to exist totally.

The influence of keystone species in an environment is disproportionately high when compared to their population in the environment. If keystone species disappeared from an environment, such an environment will find it difficult to perform ecosystem functions with an entirely different structure. In some cases, the ecosystem might cease to exist in its entirety because the species that hold it together are no longer present.

plz help urgent
will give brainliest

Answers

Answer:

D

Explanation:

Highest Pressure in water is always at the bottom

A person lifts a package weighing 75 N. If she lifts it 1.2 m off the floor, what work has she done?

Answers

Answer:

The answer is 90 J

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

workdone = 75 × 1.2

We have the final answer as

90 J

Hope this helps you

Answer:

[tex]\boxed {\boxed {\sf 90 \ Joules}}[/tex]

Explanation:

Work can be found by multiplying the force by the distance.

[tex]W=f*d[/tex]

The force of the package is 75 newtons.

The distance the package is lifted off the ground is 1.2 meters.

[tex]f= 75 \ N \\d=1.2 \ m[/tex]

Substitute the values in and multiply.

[tex]W= 75 \ N *1.2 \ m[/tex]

[tex]W=90 \ N*m[/tex]

1 Newton meter (N*m) is equal to 1 Joule (J).

Therefore, our answer of 90 Newton meters is equal to 90 Joules.

[tex]W= 90 \ J[/tex]

The work done is 90 Joules.

Each box in the Punnett square is equal to _____
1/2
25%
3/4
50%

Answers

Answer:

I think it's 3/4 or 25% i am not sure

A student hangs the south pole of a bar magnet near the north pole of
another hanging bar magnet. What do the magnets do?
A. They move away from each other.
B. They move away from each other, then toward each other.
C. They move toward each other.
O D. They do not move.

Answers

When the south pole of a bar magnet is near the north pole of another bar magnet, they move toward each other. Therefore, option (C) is correct.

What is a magnet?

A magnet can be described as a substance that creates a magnetic field and this magnetic field is the reason for the considerable properties of a magnet. The magnetic force pulls ferromagnetic materials, such as iron, cobalt, etc., and attracts or repels other magnetic substances.

A permanent magnet is composed of a material that is magnetized and produces its own magnetic field such material can be magnetized, and strongly attracted towards a magnet, is known as ferromagnetic, and contain the elements iron, and cobalt.

Each bar magnet possesses a set of North and South poles within them. The south pole of one magnet brings closer to the north pole of another magnet they attract each other and move toward each other.

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Water waves with a frequency of 4.5 Hz and a wavelength of 2.0m are traveling across a small harbor that is 200 m wide. How long does it take the waves to travel from one side of the harbor to the over?

Answers

Answer:

22.2 seconds

Explanation:

recall that for a regular wave

v = fλ

where v = wave velocity (we need to find this to solve the next part)

f = frequency = 4.5 Hz

λ = wavelength = 2.0m

Substituting these into the equation above,

v = fλ

v = (4.5)(2)

v = 9.0m/s

Also recall that Distance travelled = velocity x time

in our case, we found velocity above (= 9.0 m/s) and the distance across the harbor is given as 200m, hence

Distance travelled = velocity x time

200 = 9.0 x time

time = 200/9.0

time = 22.2 seconds

calculate the value of net force acting on given body?5N acting towards right & 15N force acting towards left on the brick.(draw fbd)
please help!!!!!​

Answers

Answer:

-10N to the left.

Explanation:

   The net force on a body is the single force that represent all the forces acting on a body.

 Let the right direction be positive

  Let the left direction be negative

Force acting to the right  = 5N

Force acting to the left  = -15N

Net force  = 5N + (-15N) = -10N

The net force will be directed -10N to the left.

If you throw a ball up with a velocity of 7 m/s, how long will it take for the ball to reach
the top of its path?

Answers

Answer:

42secs

Explanation:

v=u-gt

0=7-10t

10t=7

t=7/10

t=7/10*60

t=42

What changes when unbalanced forces are
applied to a moving bike along the direction
it is moving?

Answers

For example if you ride a bike straight ahead at a constant speed the force moving the bike forward exactly balances the forces of friction that would slow the bike down balanced forces cannot change on objects speed or it’s direction

Which of the following is a location with a high probability of containing an electron?
O orbital
O proton
O Bohr

Answers

Answer:

The answer is orbitial! :))

Answer:

it's orbitial

Explanation:

YO YO I NEED HELP!!!

Answers

Answer: Light energy

Explanation: Light energy is a form of radiant energy that is visible to the human eye.

would someone just answer this now?

Answers

Answer:

x=36.5 m

Explanation:

Rectangular Components of a Vector

A vector can be expressed as an ordered pair (x,y) where x is the x-coordinate, and y is the y-coordinate of a rectangular system.

It can also be given as a magnitude-angle pair (r,θ) where θ is measured from the positive x-axis. It's also known as polar coordinates.

The conversion from polar to rectangular coordinates is:

[tex]x=r\cos \theta[/tex]

[tex]y=r\sin\theta[/tex]

We are given the vector as a magnitude r=47.3 m and at an angle θ=39.4°. The x-component of the vector is:

[tex]x=47.3\cos (39.4^\circ)[/tex]

Using a scientific calculator to find the trigonometric function:

[tex]x=47.3\cdot 0.7716[/tex]

x=36.5 m

whats the net force​

Answers

Answer:

13n pushing left

Explanation:

1563 - 1550

A 3 kg rubber block is resting on wet concrete. The coefficient of static friction is 0.3. What is the minimum force that must be applied to the block to make the block begin to accelerate?

Answers

Answer:

You would have to find the friction force of the rubber block which would be found with the equation of Normal force (mass*gravity) times cooeficient of friction which would give 8.82 N for the amount of friction and because you need more force than 8.82 N (assuming gravity is 9.8)

We need to find the frictional force of the rubber block. This is the normal force (mass × gravity) multiplied by the coefficient of friction, which gives us a friction quantity of 8.82N. This is because it requires a force greater than 8.82N (Gravity is 9.8)

What is coefficient of friction?Mathematically, = F/N, where F represents the frictional force and N represents the normal force. Because F and N are both measured in force units (such as Newtons or Pounds), the coefficient of friction is dimensionless.The friction coefficient is the ratio of the frictional force resisting movement of two contacting surfaces to the normal force pushing the two surfaces together.Both F and N are measured in units of force (such as Newtons or Pounds), so the coefficient of friction is dimensionless. The coefficient of friction has different values ​​for static friction and sliding friction.In stiction, the frictional force resists the force applied to the object and the object remains stationary until the force of stiction is overcome. In kinetic friction, the frictional force opposes the motion of an object.

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what was the main advantage of a dial phone over an operator-controlled switchboard

Answers

The main advantage would be privacy and less possibility of loss of data.

What are gears and what is a lever ?​

Answers

Answer:

agear lever or agear stick is the lever that you use to change gear in acar or other vehicle

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Hi all who can be my english teacher. Please help me . I need a english teacher Gamma rays are given out from theof radioactive atoms. What one word completes the sentence?? Write for 5 minutes about one thing for which you are thankful. Explain the Black Bean Incident. Who was involved and why? What was the outcome? HELP WILL GIVE BRAINEST AND 20 POINTS!!! WHY IS KAMALA HARRIS BECOMING VICE PRESIDENT A HOT TOPIC OR TRENDING?? GIVE ABOUT 4-5 SENTENCES EXPLAINING WHY AND PLEASE MAKE IT GOOD Find the value of c that completes the squarex^2-16x+cPlease help me with how to do this, and show me. Thank you. In which system of government are leaders most accountable to citizens? what two trends in the 1990's were changes implemented by us business Which of the following geographical features acted as a natural defense for Egypt against enemies from the south? A. the Nubian desert B. the Mediterranean Sea C. the cataracts of the Nile D. the black silt on the river banks Please select the best answer from the choices provided A B C D HURRYYYYPeople in this stage can sometimes have midlife transitions/crisis or empty nest syndrome. In the ____ and ____ stages of product life cycle, firms often set priorities on growth and/or market share Is this cute()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()() A car is sold for $18,000. After one year, the value of the car is $9,900. Write an exponential function y to determine the value ofthe car after x years if the rate of decrease is the same each year.y =Estimate the value of the car after 6 years. Round the answer to the nearest dollar. What salient feature of the video presentation has caught your interest and why? 3(x+5)-10 = -2(x+10) What is the sum of all integers that are multiples of 4 from 1 to 150? *Show your solution* Compare how the nervous system and endocrine system work to send messages through the human body. Can somebody help me and answer this Ill give u thanks if ur right heres the picture Joy bought b boxes of granola bars. There are 10 granola bars in each box. Write an expression that shows how many granola bars Joy bought. Look at the text below. If there is an error with the subject-verb agreement, select the incorrect verb and type it correctly. Otherwise, submit the text without making any changes. Dried-up creek beds across the area has started flowing again thanks to the earthquake that shook our community last month The quake displaced groundwater which has worked its way to the surface