Rashed is on a fishing trip and decides to swing a m = 0.028 kg fishing line weight around on the end of a r = 0.75 m piece of fishing line. The weight makes one revolution in T= 1.3 s. What is the magnitude of the force (F) exerted by the sting on the weight?

Impurities will lower the melting point of a pure compound and increase the melting point range.

When an impurity is mixed with a pure substance, it lowers the melting point of the compound and expands its melting range. If a substance has a pure melting point of 110-111°C, adding a 5% impurity would cause the melting point to drop to 103-107°C, while the melting point range would broaden. It's difficult to predict the precise melting point range, but estimates such as 100-105°C, 97-100°C, and 102-110°C are all possible.

Impurities that are added to a substance have a noticeable effect on the melting point of the pure substance, which is used to evaluate the purity of the sample. The melting point of a compound is an important characteristic that chemists use to determine its identity and purity.

Learn more about melting point here:

https://brainly.com/question/17571179

#SPJ11

Answer:

Joules

Explanation:

The unit for Energy is Joules, which is equal to kg m²/s².

The gravitational potential energy is calculated as:

Where m is mass (kg), g is gravity (m/s²) and h is the height (m). So, the unit of the potential energy is:

Therefore, the answer is joules.

Answer:

-0.018 m/s

Explanation:

Momentum is conserved.

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

Both masses start at rest, so u₁ = u₂ = 0 m/s.

0 = m₁v₁ + m₂v₂

0 = (20 kg) (0.060 m/s) + (65 kg) v₂

v₂ ≈ -0.018 m/s

The final velocity of the student can be determined using momentum conservation equation. The velocity after interaction will be 0.018 m/s.

Momentum of a body is the product of its velocity and mass. Momentum of a moving body conserved in collision. Hence, the sum of initial momentum of the two colliding bodies is equal to the sum of their final momentum.

Both the student and bag were at rest initially and the initial momentum is zero.

The mass of the student = 20 kg

mass of bag + chair = 65 kg

velocity = 0.06 m/s

then, m1v1 + m2v2  = 0

(65 kg) v1 + (0.06 m/s  × 20 kg ) = 0

v1 = 0.018 m/s

The momentum exerted on the bag is returned to the student with an equal and opposite magnitude. The velocity of the girl after interaction will be 0.018 m/s.

To find more on momentum, refer here:

https://brainly.com/question/24030570

#SPJ2

Answer:

B

Explanation:

Answer:

420N

Explanation:

W = weight in air

T = weight in water

U = Upthrust

W = T + U

W = 400 + 20

W = 420 N

The work done by the frictional force in stopping the brick is negative, as it opposes the direction of motion of the brick. The correct answer is Negative.

Explanation:

The force that opposes the motion of an object when it comes in contact with a surface is called the frictional force. This force is generated when two surfaces come into contact and tend to slide against one another. The work done by the frictional force in stopping the brick is negative because it is acting in the opposite direction of the motion of the brick.

Therefore, the work done by the frictional force is the negative of the work done by the applied force that is moving the brick.

To know more about frictional force visit:

https://brainly.com/question/30280752

#SPJ11

Twisted-pair wiring is a category of cable that is comprised of four copper cables that have been wound around one another and encased in a plastic sheath.

Also with copper wires, twisted-pair cables were some of the first guided transmission medium. Twisted-pair cables are utilized in a variety of networking and communication applications today, including local area networks, digital subscriber lines, and phone lines.

The common copper cable known as twisted pair is used to link residential and commercial systems to the phone provider. Two copper pipe wires are wound around each other in a spirally to minimize electromagnetic induction or crosstalk between pairs of wires. Twisted pair connections require both wires for each connection.

To know more about Twisted-pair wiring visit:

https://brainly.com/question/14661230

#SPJ4

The minimum horizontal force (F) that must be applied to the block is equal to the static friction force (fs) to keep it from falling is:  F = μs * mg

To derive an expression for the minimum horizontal force (F) that must be applied to the block to keep it from falling to the ground, we will use the following terms: cart, roll without friction, coefficient of static friction (μs), and minimum horizontal force.

Assuming that the cart is free to roll without friction and the coefficient of static friction between the block and the cart is μs, we can analyze the forces acting on the block.

There are two forces acting on the block: gravitational force (mg) acting vertically downward and the static friction force (fs) acting horizontally opposite to the applied force. To keep the block from falling, the static friction force must balance the gravitational force.

Using Newton's second law of motion, we can write the equations for the horizontal and vertical components:

1) fs = μs * N (where N is the normal force)
2) N = mg (since there is no vertical acceleration)

Substituting equation (2) into equation (1), we get:

fs = μs * mg

The minimum horizontal force (F) that must be applied to the block is equal to the static friction force (fs) to keep it from falling. Therefore:

F = μs * mg

To know more about minimum horizontal force (F) refer here:

https://brainly.com/question/19595104

#SPJ11

After considering the given data the height from which the gannet dived is approximately 51.84 m.

To evaluate the height from which a gannet dived if it hits the water at 32 m/s, assuming that the gannet was motionless before starting its dive, we can apply the law of conservation of energy, which projects  that the initial potential energy of the gannet is equivalent to its final kinetic energy prior to hitting the water. Then, we can write:
\(mgh = (1/2)mv^2\)
Here:
m = mass of the gannet
g = acceleration due to gravity
h = height from which the gannet dived
v = velocity of the gannet just before hitting the water
Considering that the mass of the gannet is 1 kg, and applying substitution of the given values, we get:
\((1 kg)(9.8 m/s^2)(h) = (1/2)(1 kg)(32 m/s)^2\)
\(h = (1/2)(32 m/s)^2 / (9.8 m/s^2)\)
h = 51.84 m
To learn more about conservation of energy ,
https://brainly.com/question/27422874

#SPJ4
The complete question is
A gannet is a seabird that fishes by diving from a great height. If a gannet hits the water at 32 m/s , what height did it dive from? Assume that the gannet was motionless before starting its dive.

Answer:

C. All cells have identical genetic information.

Answer:

A and C

Explanation:

Energy and matter are both conserved within natural processes. It follows that while energy and matter can adopt different forms, they cannot be produced or extinguished. Different types of matter and energy can combine, and energy and matter frequently cycle within a system.

Explain energy.

Energy is the ability to perform tasks. It could appear in numerous different forms, such as potential, kinetic, thermal, electrical, chemical, nuclear, etc. Additionally, there is heat and work, which is energy being transferred from one entity to another.

The most important source of chemical energy for sustaining life is found in food. The three states of matter—liquid, solid, and gas—are essential because matter and energy move in concert along food networks.

An ice cube composed of water, for instance, changes into liquid water when you add energy, and when you add even more energy, it turns into steam. The type of matter and the quantity of matter are the same as in the original cube, but the level of energy may be higher or lower.

To learn more about energy use:
https://brainly.com/question/13881533

#SPJ1

The current through each resistor is 13 A.

To calculate the current in each resistor, we can use Ohm's law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.

In this case, we are given the current and the resistance of each resistor, so we can use Ohm's law to calculate the voltage across each resistor, and then use the current to find the current through each resistor.

Let's start with the first resistor, which has a resistance of 2 ohms:

V = IR

V = (13 A) x (2 ohms)

V = 26 V

Now, we can use the voltage and resistance to find the current through the first resistor:

I = V/R

I = (26 V) / (2 ohms)

I = 13 A

So, the current through the first resistor is also 13 A.

Next, we can repeat the same process for the other two resistors:

For the second resistor with a resistance of 3 ohms:

V = IR

V = (13 A) x (3 ohms)

V = 39 V

I = V/R

I = (39 V) / (3 ohms)

I = 13 A

So, the current through the second resistor is also 13 A.

For the third resistor with a resistance of 4 ohms:

V = IR

V = (13 A) x (4 ohms)

V = 52 V

I = V/R

I = (52 V) / (4 ohms)

I = 13 A

So, the current through the third resistor is also 13 A.

Therefore, the current through each resistor is 13 A.

To learn more about Kirchhoff's rules click:

brainly.com/question/30201571

#SPJ1

Answer:

D

Explanation:

Contrary to answers a, b, and c, volcanic rocks, like basalt, andesite, and rhyolite, are fine-grained which are extrusive igneous rocks.

Intrusive rocks, also called plutonic rock, are coarse-grained and cool slowly without ever reaching the surface. While intrusive igneous rocks do solidify in the earth they do eventually become exposed by erosion.

I hope this helps

Correct me if I'm wrong.

Given:

distance of observer from the sound source, \(s=70~m\)

distance between the source of image information sender and the receiver, \(d=45~miles=72420.48~m\)

Assumptions:

speed of sound, \(v=343~m/s\)

speed of the image information being sent, \(c=3\times 10^8~m/s\) (we assume it to be nearly the speed of light in vacuum)

Solution:

Time taken by the sound to reach the observer:

\(time=\frac{distance}{speed}\)

\(time=70\div 343\)

\(time \approx 0.2~s\)

Time taken by the image to reach the destination:

\(time=\frac{72420.48}{3\times 10^8}\)

\(time=2.4\times 10^{-4}~s\)

Answer:

About 59.83 kg

Explanation:

The formula for kinetic energy is \(KE = \frac{1}{2}mV^2\), where KE = Kinetic Energy in Joules (J), m = mass in kilograms (kg), and V = Velocity in meters per second (m/s).

In this problem, we are given the Kinetic Energy amount as 193 Joules and the Velocity as 2.54 m/s. Let's plug it into our equation

Now, let's solve this equation.

Step 1: Simplify both sides of the equation.

Step 2: Divide both sides by 3.2258.

Answer:

backwards. they will stop.

Explanation:

they will stop at a point because of the friction and that it couldn't move for ever

Answer:

At positions C and E potential energy is maximum. At position D kinetic energy is maximum.

Explanation:

Explanation:

The question is not complete, here is the complete question

"Beatrice and the Elevator Beatrice, a middle school student, is visiting a very tall office building and notices that she feels heavier when the elevator car is traveling up and lighter when the elevator car is traveling down. After making these observations, Beatrice comes back to the building and stands on a bathroom scale that measures her weight as she travels up and down in the elevator.

1. . What question is Beatrice trying to answer?

2. What is one variable Beatrice could change in her investigation? What might she figure out if this

variable was changed"

1. Beatrice is trying to observe the influence of the elevator movement on her weight, Hence the question is "will the elevator  movement cause her weight to change"

therefore moving upward the reading on the scale will increase

Reading=mg+ma

downward

Reading will reduce

Reading=mg-ma

2. The independent variable is the acceleration due to gravity g=9.81m/s^2

while the dependent variables are

    i. The elevators acceleration

    ii. Beatrice's mass

(a)  If the mass of the blob is reduced by half, the new period of oscillation will same as the initial.

(b) The new period of oscillation on Pluto is 4 times the period of oscillation on Earth.

The new period of oscillation of the pendulum is calculated as follows;

T = 2π √ ( L / g )

where;

From the equation above we can see that the period of a pendulum does not depend on the mass of the bob, but only on the length of the string.

Hence, the new period of oscillation will be same value as the initial.

The new period of oscillation on Pluto when the gravity of Pluto is 1/16 of Earth is calculated as;

T' =  2π √ (L/g/16)

T' = 2π √ ( 16L/g )

T' = 4 [ 2π √ (L/g) ]

T' = (4T)

Learn more about period of oscillation here: https://brainly.com/question/20070798

#SPJ1

Answer:

ineria

Explanation:

It is due to her inertia of motion that kept her moving forward.

We have Nina who is riding skateboard.

We have to determine why Nina fell off the skateboard on rough pavement.

A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

According to the question -

Before the rough patch, Nina was riding smoothly. However as soon as she enters the rough patch, the rough patch acts as an obstruction to the forward movement of skateboard. The skateboard and Nina are both moving with same velocity. The skateboard is in contact with the rough patch and as soon as the skateboard's motion is obstructed, the skateboard comes to rest but due to the inertia of motion, Nina continues to move with the same forward velocity. In this way, Nina falls ahead of skateboard.

Hence, it is due to her inertia of motion that kept her moving forward.

To solve more questions on Inertia, visit the link below-

https://brainly.com/question/3268780

#SPJ2

The net force on particle q₃ is approximately 2576.08 N.

To calculate the net force on particle q₃, we need to consider the forces exerted on it by particles q₁ and q₂ due to their electrostatic interactions.

The electrostatic force between two charged particles can be determined using Coulomb's law, which states that the force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, the formula for the electrostatic force (F) is:

F = (k * |q₁ * q₂|) / r²

Where k is the electrostatic constant (k ≈ 8.99 × 10^9 N m²/C²), q₁ and q₂ are the charges of particles q₁ and q₂, and r is the distance between them.

First, let's calculate the force between q₁ and q₂:

F₁₂ = (8.99 × 10^9 N m²/C² * |-75.8 μC * 90.6 μC|) / (0.876 m)²

Plugging in the values:

F₁₂ ≈ (8.99 × 10^9 N m²/C² * 6.87508 μC²) / (0.876 m)²

≈ 563.78 N

Next, let's calculate the force between q₂ and q₃:

F₂₃ = (8.99 × 10^9 N m²/C² * |90.6 μC * -84.2 μC|) / (0.432 m)²

Plugging in the values

F₂₃ ≈ (8.99 × 10^9 N m²/C² * 7.62012 μC²) / (0.432 m)²

≈ 3139.86 N

To find the net force on q₃, we need to subtract the force F₁₂ from F₂₃:

Net Force = F₂₃ - F₁₂

= 3139.86 N - 563.78 N

≈ 2576.08 N

Therefore, the net force on particle q₃ is approximately 2576.08 N.

for more questions on particle

https://brainly.com/question/28270202

#SPJ8

The difference between the highest frequency heard by a student in the classroom and the initial frequency of the sound generator can be calculated using the Doppler effect equation. The Doppler effect describes the change in frequency of a wave when there is relative motion between the source of the wave and the observer.

In this scenario, as the sound generator is whirled around in a horizontal circle, it experiences circular motion. The frequency of the sound wave observed by the student will vary depending on the relative motion between the source and the observer.

To calculate the difference in frequency, we need to consider the relative velocity between the source and the observer. Since the source is rotating in a circle, its velocity changes continuously. This means that the frequency heard by the student will also change continuously.

Without specific information about the positions and distances involved, it is difficult to provide an exact numerical value for the difference in frequency. However, it can be determined by applying the Doppler effect equation and considering the relative velocity between the source and the observer at different points in the motion.

To learn more about Doppler  Click Here: brainly.com/question/28106478

#SPJ11

The acceleration of the textbook is a = F/m = 2.0 N/1.33 kg = 1.5 m/s². and the final velocity of the textbook is v = 0 + (1.5 m/s²)(0.75 s) = 1.125 m/s.

Acceleration is the rate at which an object changes its velocity over time. It is a vector quantity, meaning it has both magnitude and direction. An object's acceleration can be calculated by measuring the change in its velocity over time.

The net force acting on the textbook is the difference between the pushing force of 4.0 N and the frictional force of 2.0 N, which is 2.0 N.
According to Newton's Second Law, this net force of 2.0 N will cause an acceleration of the textbook given by the equation F = ma, where m is the mass of the textbook (1.33 kg) and a is the acceleration.
Therefore, the acceleration of the textbook is a = F/m = 2.0 N/1.33 kg = 1.5 m/s².

The final velocity of the textbook can then be calculated using the equation v = v0 + at, where v0 is the initial velocity (0 m/s, since the textbook was initially at rest), a is the acceleration (1.5 m/s²), and t is the time the textbook was pushed (0.75 m).
Therefore, the final velocity of the textbook is v = 0 + (1.5 m/s²)(0.75 s) = 1.125 m/s.

To learn more about acceleration
https://brainly.com/question/460763
#SPJ1

The true azimuth of the AB alignment is 91º 52' (east of north), the magnetic azimuth is 100º 22' (east of north), and the grid azimuth is 108º 52' (east of north).

To find the true azimuth, magnetic azimuth, and grid azimuth of the AB alignment, we need to consider the magnetic declination. The magnetic declination indicates the angle between true north and magnetic north at a specific location. In this case, the magnetic declination is 8º 30' E, which means that the magnetic north is 8º 30' east of the true north.

To calculate the true azimuth, we subtract the magnetic declination from the grid azimuth. The grid azimuth is given as 100º 22', so subtracting the magnetic declination of 8º 30' E gives us a true azimuth of 91º 52' (east of north).

The magnetic azimuth remains the same as the grid azimuth, which is 100º 22' (east of north).

The grid azimuth is calculated by adding the magnetic declination to the true azimuth. Since the magnetic declination is east, we add it to the true azimuth. Adding 8º 30' E to the true azimuth of 91º 52' gives us a grid azimuth of 108º 52' (east of north).

Learn more about magnetic declination here:

https://brainly.com/question/18597422

#SPJ11

The speed of the  Toyota Corolla would have  been 143.9 mph.

The acceleration of the F-15 can be calculated as follows:

Acceleration = Velocity Change / Time = (Take-off Speed) / Time

where;

Take-off Speed = √(2dg /t²)

Take-off Speed = √(2 x  (270 ft)  x 32.2 ft/s² / (2 s)²)

T  = √(17496) = 131.6 ft/s

Acceleration = Velocity Change / Time

= (131.6 ft/s) / (2 s) = 65.8 ft/s²

We can use the same acceleration to launch the Toyota Corolla, and calculate its final velocity:

Final Velocity = Initial Velocity + Acceleration x Time

where;

Final Velocity = 0 + (65.8 ft/s²) * (2 s) = 131.6 ft/s

Finally, we can convert the velocity from feet per second to miles per hour:

Velocity (mph) = Velocity (ft/s) x (1 hour/3600 s) x (5280 ft/mile)

= 131.6 ft/s x  (1 hour/3600 s)  x (5280 ft/mile)

= 143.9 mph

Learn more about average acceleration here: https://brainly.com/question/26246639

#SPJ1

The angular velocity of gear 5 is (√3 / 3) rad/s.

To find the angular velocity of gear 5 using first-order kinematic coefficients, we can use the formula:

ω_5 = ω_2 * (R_2 / R_AB) * (ρ_4 / ρ_5) * sin(θ_2)

where:

ω_5 is the angular velocity of gear 5

ω_2 is the angular velocity of gear 2

R_2 is the radius of gear 2

R_AB is the distance between the centers of gears 4 and 5

ρ_4 is the distance from the center of gear 4 to the pitch point (contact point) with gear 2

ρ_5 is the distance from the center of gear 5 to the pitch point with gear 2

θ_2 is the pressure angle of gear 2

Using the given values:

R_2 = 4"

R_AB = 12"

ρ_4 = 2"

ρ_5 = 6"

θ_2 = 60 degrees

ω_2 = 10 rad/s (counterclockwise)

ω_5 = 10 * (4 / 12) * (2 / 6) * sin(60°)

ω_5 = 10 * (1/3) * (1/3) * √3/2

= 10 * (1/9) * √3

= (√3 / 3) rad/s

To know more about angular velocity here: https://brainly.com/question/30237820

#SPJ11

Answer:

Often the independent variable is plotted on the x-axis - and example might be time (an experiment where time is measured by a watch or an independent mechanical device)

The dependent variable is often plotted on the y-axis - and example here might be the velocity or the acceleration,

It may be the responsibility of the experimenter to determine the value of the dependent variable by some type of measurement

The frequency of the red light emitted by a neon sign with a wavelength of 659.9 nm is 4.5×10^14 Hz.

The frequency is the number of times a recurring occurrence takes place during a predetermined period. For example, if an event occurs twice in one second, then the frequency is 2 Hz (Hertz).

A recurring event's frequency is the number of times it happens in a predetermined period. For example, a frequency of a wave is the number of wave peaks passing a fixed point in one second.

The frequency is the number of times something occurs in a given period. For example, the frequency of a radio station is the number of times it broadcasts a signal per second.

Given:

Wavelength = 659.9nm

Speed of light = 3×10^8 m/s

Frequency = speed of light / wavelength

Frequency = (3.0 x 10^8 m/s) / (659.9 nm)

Frequency = 4.5 x 10^14 Hz

To know more about frequency visit:

brainly.com/question/29213586

#SPJ4

The rms speed of the helium atoms is 811 m/s. So the rms speed of the neon atoms is 465 m/s.

Given that there are 0.3 moles of helium and 0.7 moles of neon mixed together inside a sealed container. The rms speed of the helium atoms is 811 m/s.We need to find the rms speed of the neon atoms.In order to find the rms speed of the neon atoms, we need to use the following formula:rms speed = √((3kT) / m)Here,k = Boltzmann’s constantT = temperaturem = mass of the gasLet's calculate the rms speed of helium atoms first;rms speed of helium atoms = √((3kT) / m)811 = √((3 × 1.38 × 10^-23 × T) / 0.004)3.68 × 10^5 = T / 0.004T = 1472 KNow we can calculate the rms speed of the neon atoms;rms speed of neon atoms = √((3kT) / m)= √((3 × 1.38 × 10^-23 × 1472) / 0.0202)= 465 m/s. Therefore, the rms speed of the neon atoms is 465 m/s.

learn more about speed

https://brainly.com/question/18449996

#SPJ11