a body whose mass is m\ is acted upon at a given point p by a blow of impulse x. if v and v' be the velocities of p in the direction of x just before and just after the action of x, the change in kinetic energy is : (a) v v ix (b) (v v') x (c) ~(v' v)x (d) all of these

The cyclic frequency of the resulting motion is 1.438 Hz. when  the acceleration due to gravity is 9.8 m/s 2. Because the mass possesses kinetic energy at the static equilibrium displacement, which is translated into potential energy stored in the spring at the extremes of its journey, oscillations happen.

Given:
Force constant of the spring = k
Displacement from equilibrium point = 21.9 cm
Displacement from equilibrium point during oscillation = 8.1 cm
Acceleration due to gravity = 9.8 m/s²Formula used:
The frequency of oscillation is given by the formula f = 1/2π √(k/m)
where k is the force constant of the spring and m is the mass of the object.

In this case, we do not have the mass of the weight, but we can assume that the weight is the only object oscillating, and therefore its mass will be considered as m. If the weight is denoted by w, then its mass will be w/g, where g is the acceleration due to gravity.

Therefore,
m = w/g

Displacement during oscillation = 8.1 cm
= 0.081 m
The maximum extension of the spring from the equilibrium point during the oscillation will be the sum of the equilibrium position and the displacement from the equilibrium point during oscillation, i.e.
y = 21.9 cm + 8.1 cm
= 30 cm
= 0.3 m

Frequency of oscillation f

1/2π √(k/m)
Substituting m = w/g, we get
f = 1/2π √(k/(w/g))
f = 1/2π √(kg/w)
Now we will calculate k.
k = mg/y
where m is the mass of the weight, g is the acceleration due to gravity, and y is the maximum extension of the spring from the equilibrium point during the oscillation.
Substituting values, we get
k = (w/g)(9.8 m/s²)/(0.3 m)
k = 32.67w/g
Substituting this value in the equation for frequency, we get
f = 1/2π √(32.67w/gw)
f = 1/2π √(32.67/g)
f = 1.438 Hz

Therefore, the cyclic frequency of the resulting motion is 1.438 Hz.

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Answer:

Speed = 5 m/s

Explanation:

Distance (d) = 10 m

Time (t) = 2 s

Speed = Distance ÷ Time

Speed = 10 ÷ 2

Speed = 5 m/s

Answer:

Speed = 5 m/s

Explanation:

Distance (d) = 10 m

Time (t) = 2 s

formula: Speed = Distance ÷ Time

Speed = 10 ÷ 2      Speed = 5 m/s

(A) Humans impact the distribution of resources by altering the natural processes that govern the distribution of resources such as minerals, fuel reserves, and water.

(B) Mining is one way in which humans impact mineral distributions.

(C) Humans impact fuel reserves through the extraction and consumption of fossil fuels.

Human activities such as mining, drilling, and deforestation, humans disrupt the natural balance of resources, which can lead to resource depletion or an uneven distribution of resources.

By extracting minerals from the earth, humans can deplete or alter the natural distribution of these resources.

Additionally, mining can result in the release of toxic chemicals and heavy metals into the environment, which can have detrimental effects on ecosystems and human health.

The burning of fossil fuels releases greenhouse gases, which contribute to climate change. Additionally, the extraction of fossil fuels can have negative impacts on ecosystems, including habitat destruction and water pollution.

The use of fossil fuels also contributes to geopolitical tensions and conflicts, as countries compete for access to these resources. In recent years, there has been a growing recognition of the need to transition to cleaner, renewable energy sources in order to mitigate the negative impacts of human activities on fuel reserves and the environment.

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Answer:

Which battery has a longer battery life?

Explanation:

duh

Answer:

is leslin testing on a brand hope it's helpful to you

If wind is blowing at 20 miles per hour in the direction N30W (30 degrees left of y axis), the express for velocity as a vector v in terms of i and j is  v = v = -10 i + 10√3 j

In this figure it seen that,

v(x) = v sin30 = v/2

v(y) = v cos30 =√3/2 v

where v is velocity of the wind which is 20 miles per hr.

v(x) = 20× sin30 = 20/2 = 10

v(y) = 20× cos30 =√3/2×20 = 10√3

in the vector form it ca be written as,

v = -10 i + 10√3 j

there is negative sign cause it is on negative x axis.

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Answer:

Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations.

Answer:

temperature is the average kinetic energy of the particles of matter. the hotter something is the more kinetic energy it has.

Explanation:

A. The average drift speed of the electrons in the wire is  1.19 x \(10^{-3}\)cm/s.

B. The time it would take an electron to travel 8.84 m is 7.43 x \(10^{5}\)sec

(A) To find the average drift speed of electrons in a wire, we can use the equation:

I = nAvq

Where:
I is the current in Amperes
n is the electron density in electrons per \(cm^{3}\)
A is the cross-sectional area of the wire in \(cm^{2}\)
v is the average drift velocity of electrons in cm/s
q is the charge of an electron, which is 1.6 x \(10^{-19}\) Coulombs

First, we need to find the cross-sectional area of the wire. The formula for the area of a circle is:

A = π\(r^{2}\)

Where:
A is the area of the circle
r is the radius of the circle

Given that the wire diameter is 1.63 mm, we can find the radius by dividing it by 2:

r = 1.63 mm / 2 = 0.815 mm = 0.0815 cm

Now, we can calculate the area:

A = \(π(0.0815 cm)^{2}\) = 0.0209 \(cm^{2}\)

Next, we can rearrange the equation to solve for v:

v = I / (nAq)

Given that the current is 20 A and the electron density is 8.47 x \(10^{24}\)electrons per \(cm^{3}\), we can substitute these values into the equation:

v = 20 A / (8.47 x \(10^{24}\) electrons per cm^3 * 0.0209 cm^2 * 1.6 x \(10^{-19}\) C)

Simplifying the expression:

v = 1.19 x \(10^{-3}\) cm/s

Therefore, the average drift speed of electrons in the 14 gauge wire carrying a maximum current of 20 A is approximately 1.19 x \(10^{-3}\) cm/s.

(B) To calculate the time it would take for an electron to travel a distance of 8.84 m, we can use the formula:

t = d / v

Where:
t is the time in seconds
d is the distance in meters
v is the average drift velocity of electrons in meters per second

Given that the distance is 8.84 m and the average drift velocity is 1.19 x 10^-3 cm/s, we need to convert the velocity to meters per second:

v = 1.19 x \(10^{-3}\) cm/s * 0.01 m/cm = 1.19 x \(10^{-5}\) m/s

Now, we can substitute the values into the formula:

t = 8.84 m / 1.19 x \(10^{-5}\)m/s

Simplifying the expression:

t = 7.43 x \(10^{5}\)s

Therefore, it would take approximately 7.43 x \(10^{5}\) seconds for an electron to travel a distance of 8.84 m.

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Explanation: a reduction in genetic diversity and discomfort for animals that have very exaggerated characteristics.

Answer:

Option C, Turbines

Explanation:

An electric motor comprise of following components-

a) Magnets

b) Electric wire or solenoid

c) Motor shaft

Turbine is a component of power producing plant that is essential to rotate the shaft of the motor. Once the shaft is rotated, the electric coil placed between the magnets is also rotated. Rotating coil cut the magnetic fields to induce emf and hence electric current is produced from mechanical work (i.e rotation).

Hence, option C is correct

the two players will move off together to the left at a speed of 0.12 m/s.

To find the momentum of each player, we use the formula:
momentum = mass x velocity
For the first player (90 kg, 6 m/s to the right):
momentum = 90 kg x 6 m/s = 540 kg*m/s to the right
For the second player (80 kg, 7 m/s to the left):
momentum = 80 kg x (-7 m/s) = -560 kg*m/s to the left
Now we need to use the law of conservation of momentum, which states that the total momentum of a closed system remains constant. In this case, the two players collide and stick together, so we can treat them as a single system.
Before the collision, the total momentum is:
540 kg*m/s to the right (player 1) + (-560 kg*m/s to the left) (player 2) = -20 kg*m/s to the left
After the collision, the total momentum must still be -20 kg*m/s to the left. Let's assume that the two players move off together in the same direction, and call their combined mass M and their combined velocity v. Then:
momentum = M x v
We can write two equations based on conservation of momentum and conservation of mass:
(1) 540 kg*m/s + (-560 kg*m/s) = M x v
(2) 90 kg + 80 kg = M
Solving equation (2) gives M = 170 kg. Substituting into equation (1) and solving for v gives:
v = (-20 kg*m/s) / (170 kg) = -0.12 m/s to the left

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The orbital radius of the second satellite is 1.31r1.

What is the orbital radius ?

The average separation of a planet from the sun is known as orbital radius. Given that it has a significant impact on planetary temperature, this is one of the most crucial factors in evaluating a planet's ability to support life. The distance between a planet's center and surface is known as the planetary radius.

Time period of a satellite in circular orbit of radius 'r' is

\(T^2\alpha r^3\)

T= time period

\(T1^2/T2^2=r1^3/r2^3\\T2=1.5T1=3/2T1\)

\((T1/3/2T1)^2=(r1/r2)^3\\(2/3)^2=(r1/r2)^3\\- > 4/9=(r1/r2)^3\\r1=(4/9)^1/3r2\\r2=(9/4)^1/3r1\\r2=1.31r1\)

A planet has two satellites in circular orbits of the second satellites is 1.31r1.

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The statement "Most of the gases in the atmosphere are found in the troposphere" is true because . The troposphere is the lowest layer of Earth's atmosphere and extends from the surface to approximately 8 kilometers (5 miles) at the poles and 17 kilometers (11 miles) at the equator.

It contains around 75% to 80% of the total mass of the atmosphere and is the layer where most weather phenomena occur, such as clouds, rainfall, and storms.

The composition of the troposphere includes nitrogen (78%), oxygen (21%), and trace amounts of other gases such as argon, carbon dioxide, and water vapor. The concentration of these gases is highest in the troposphere because this layer is closest to Earth's surface, where various natural and human activities release gases into the atmosphere.

As you move further away from the Earth's surface and into higher atmospheric layers, the concentration of gases decreases. This is due to the decreasing air pressure and density in those layers. The troposphere is the most crucial layer for life on Earth, as it provides the air we breathe and the conditions necessary for weather and climate.

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Her mass is approximately equal to 27 kilograms.

First of all, you need to understand that momentum is a conserved quantity and the solution to this problem involves elastic collision.

Momentum can be defined as p = mv where p is momentum, m is mass, and v is velocity. Just like energy, momentum is a physical quantity that is conserved in an isolated system. Momentum is conserved as a result of Newton's third law, which states that \(F_A=-F_B\).

You are given that the ice skaters bounce off each other, meaning the collision is elastic. Remember that in an elastic collision, m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂ where

Suppose that m₁ = 49 kg, m₂ = x, u₁ and u₂ = 0 m/s, v₁ = 2.1 m/s, and v₂ = 3.81 m/s. Then the mass of the other ice skater is as follows:

49 · 0 + x · 0 = 49 · 2.1 + x · 3.81

0 = 102.9 + 3.81x

3.81x + 102.9 = 0

3.81x = -102.9

x ≈ -27

Since a mass value can't be negative, the absolute value of x is 27. Therefore, it's her actual mass in kilograms.

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Answer:the imput force is applied to the axle

Explanation:

Gravity and wind speed are vector quantity , Temperature , Volume , Number of pages in a book are the scalar quantity

In terms of their size and direction, the physical quantities may be divided into scalars and vectors.The examples of physical quantities that can be sort into vectors and scalars are temperature, gravity, volume, number of pages in a book, wind speed and direction, etc.

The following quantities are:

Temperature- The temperature is a scalar number since it just needs the magnitude (heat content) and not the direction.

Gravity - It is comparable to the force with which the Earth pulls an item that is always pointed toward its center. The amount is a vector since both magnitude and direction define it.

Volume - it is the pitch of a sound wave which is nothing but a form of energy which causes the sensation of hearing. Since the direction is not required to measure a sound level (determined by the corresponding frequency of the sound wave) but the only magnitude, therefore, it is a scalar.

The amount is a scalar since the number of pages in a book is entirely determined by a numerical value without the requirement for a direction.

Wind Speed and Direction - Since both the wind's magnitude in terms of speed and direction are necessary, the quantity is a vector.

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(a) The magnetic force experienced by the wire when it perpendicular is 0.01 N.

(b) The magnetic force experienced by the wire when the angle is  30⁰ is 5 x 10⁻³ N.

(c) The magnetic force experienced by the wire when it parallel is 0 N.

The magnetic force experienced by the wire is calculated by applying the following;

F = BIL x sin(θ)

where;

When the angle of inclination is perpendicular,  

F = 1 x 10⁻² x 10 x 0.1 x sin(90)

F = 0.01 N

When the angle of inclination is 30⁰,

F = BIL x sin(θ)

F = 1 x 10⁻² x 10 x 0.1 x sin(30)

F = 5 x 10⁻³ N

When the wire is parallel, the angle is 0⁰,

F = BIL x sin(θ)

F = 1 x 10⁻² x 10 x 0.1 x sin(0)

F = 0 N

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Answer:

ten minutes fakfdxjjnox

Answer:

Question:

A soccer ball is kicked horizontally off a  

22.0

meter high hill and lands a distance of  

35.0

meters from the edge of the hill. Determine the initial horizontal velocity of the soccer ball.

Projectile:

The projectile motion is a combination of uniform motion and uniform acceleration motion. When an object is thrown with a velocity (v) then, the horizontal component of the velocity (

v

h

) does not change with respect to time and therefore, the following relation holds valid for the horizontal motion:

S

p

e

e

d

=

S

p

e

e

d

T

i

m

e

The vertical component of the velocity (

v

v

) changes at the rate of  

g

=

9.81

m

/

s

2

and therefore, the equations of motion are used to study the vertical motion of the object. These equations are customized for the vertical motion as:

v

=

u

+

g

t

s

=

u

t

+

0.5

g

t

2

v

2

−

u

2

=

2

g

s

For an object thrown with a horizontal velocity, the initial vertical component of the velocity will be zero. In that case, the vertical distance traveled by the object in time (t) will be,

s

=

0.5

g

t

2

⇒

t

=

√

2

s

g

Answer and Explanation:

Given:

Height of the hill,  

H

=

22

m

The horizontal distance covered by the ball before it lands,  

d

=

35

m

Calculating the time taken by the ball to hit the ground,

t

=

√

2

H

g

=

√

2

(

22

)

9.81

=

2.12

s

Calculating the initial horizontal velocity of the ball,

V

=

d

t

=

35

2.12

=

16.51

m

/

s

which is the answer.

Explanation:

Answer:

800 meters

Explanation:

4 x 200 is 800 meters.

Aswan, Egypt is one of the hottest places on Earth in July because of its location in the Sahara Desert, which is known for its extreme heat.

Canada experiences much larger differences in temperature from January to July than Brazil due to its location in the Northern Hemisphere,

Aswan, Egypt is one of the hottest places on Earth in July because of its location in the Sahara Desert, which is known for its extreme heat. The desert is characterized by low humidity and clear skies, which allows the sun's radiation to heat the ground and air quickly.

Canada experiences much larger differences in temperature from January to July than Brazil due to its location in the Northern Hemisphere, which means it experiences the seasons in the opposite way to Brazil, which is located in the Southern Hemisphere. During the winter months in Canada (January), the days are shorter, the angle of the sun is lower, and there is less direct sunlight, resulting in colder temperatures.

Brazil, on the other hand, is closer to the equator and experiences relatively consistent temperatures throughout the year.  Therefore, Brazil does not experience the same large differences in temperature from January to July as Canada does.

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The feature that is true of both solar and wind power is (b) Both power sources produce no greenhouse gas emissions during normal operation.

This makes them a more environmentally friendly alternative to traditional fossil fuels, which emit carbon dioxide (CO2) and other harmful gases during combustion.

However, the other options are not completely accurate. Solar and wind power can be intermittent, but this does not necessarily mean that they require a backup energy source. Energy storage technologies, such as batteries or pumped hydro storage, can be used to store excess energy generated during times of high production and release it during times of low production.

Furthermore, while solar and wind power currently supply a small fraction of global energy demand, it is important to note that their usage is increasing rapidly. In fact, renewable energy sources, including solar and wind power, are projected to be the fastest-growing energy source over the next few decades.

In conclusion, solar and wind power's most significant shared feature is their ability to operate without producing greenhouse gas emissions. While they do have other characteristics that are sometimes associated with them, these features are not always completely accurate and may not apply in every circumstance.

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Answer:

Projectile motion is the motion of an object thrown or projected into the air, subject to only the acceleration of gravity. The object is called a projectile, and its path is called its trajectory. The motion of falling objects, as covered in Problem-Solving Basics for One-Dimensional Kinematics, is a simple one-dimensional type of projectile motion in which there is no horizontal movement. In this section, we consider two-dimensional projectile motion, such as that of a football or other object for which air resistance is negligible.

Explanation:

B the dropped ball

Answer:

A light bulb

Explanation:

Sorry of it wrong

(105 N/m) x (0.1 m)  =  10.5 Newtons.

Answer:

(105 N/m) x (0.1 m) = 10.5 Newtons.

Explanation:

apex quiz

Answer:

Archaeology

Explanation:

Radioisotopes are radioactive atoms of an element in which their atoms contain excess energy making them unstable. When broken down they become more stable releasing radiations.

Carbon 14 is a radioactive isotope that is used in archaeology to study and estimate the lifespan and age of organic materials such as wood, leather. Carbon 14 can be used to estimate the ages of materials up to 50000 to 60000 years.

Answer:

archaeology

Explanation:

Answer:

Friction is defined as the force that opposes the motion of a solid object over another. There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction. Friction and normal force are directly proportional to the contacting surfaces and it doesn’t depend on the hardness of the contacting surface. With the increase in relative speeds, the sliding friction reduces whereas fluid friction increases with the increase in the relative speed, also fluid friction is dependent on the viscosity of the fluid.

In sliding motion, each point on the body has only translational or linear motion. But in case of rolling motion, different points have a combination of linear as well as rotational motion.

Types Of Friction

Static Friction

Sliding Friction

Rolling Friction

Fluid Friction

Static Friction

Answer:

Here is a free body diagram of a book falling off a table:

[Book]

|-------------------|

| |

| |

[Table]

The book is represented by the rectangle. The forces acting on the book are gravity, which is a downward force, and the normal force from the table, which is an upward force. The direction of these forces is indicated by the arrows.

Gravity is the force that pulls objects toward the center of the earth. It is always present and always acts downward. The normal force is the force exerted by the table on the book in the upward direction, in order to balance the force of gravity.

In this diagram, the forces acting on the book are shown as equal and opposite forces. This means that the book is in equilibrium, which means that it is not accelerating. If the book were accelerating, the forces would not be equal and opposite, and there would be an unbalanced force acting on the book.

I hope this helps! Let me know if you have any questions.

Explanation:

The sum of the distances travelled in each direction equals the total distance travelled by bicycle:

Total distance = 15 km (north) + 5 km (east)

Total distance = 20 km

First change in position:

Equation: distance = speed x time (D = V x T)

Variables:

Speed (V) = 30 km/hr

Time (T) = 0.50 hours

Solution:

D = V x T

D = 30 km/hr x 0.50 hr

D = 15 km

The second change in position:

Equation: distance = speed x time (D = V x T)

Variables:

Speed (V) = 20 km/hr

Time (T) = 0.25 hours

Solution:

D = V x T

D = 20 km/hr x 0.25 hr

D = 5 km

Therefore, the total distance traveled by bicycle is the sum of the distances traveled in each direction:

Total distance = 15 km (north) + 5 km (east)

Total distance = 20 km

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the net impulse that acted on the ball =500 N.s if 100 kg ball is initially traveling at 10 m/s. If the ball experiences a constant external force that increases the ba velocity to 15 m/s .

The normal force acts in a direction normal to the surface interaction between objects. Friction is a force that opposes motion on surfaces. Other examples of non-fundamental forces include the elastic force, tension, and frame-dependent forces .

to make someone do something that they do not want to do, for example by using or threatening to use violence. force someone to do something: He claims that police officers forced him to sign a confession.

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Kenkey and fish are digested in the stomach and small intestine, with the help of digestive enzymes.

The digestion process of kenkey and fish begins in the mouth where the food is chewed and mixed with saliva.

The food then travels down the esophagus to the stomach where it is mixed with stomach acid and digestive enzymes. The stomach churns and breaks down the food into smaller pieces, allowing the enzymes to further break down the carbohydrates, proteins, and fats.

The partially digested food then enters the small intestine where additional digestive enzymes from the pancreas and liver break down the remaining nutrients.

The nutrients are then absorbed through the walls of the small intestine and transported to the rest of the body through the bloodstream. Any waste products that are not absorbed by the body are eliminated as stool.

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