Two long, parallel wires, fixed in space, carry currents i1 and i2. the force of attraction has magnitude f. what can you do to currents in order to have a repulsive force of magnitude 4f?

Explanation:

Michael should put the vase at the bottom of the shelf to reduce the potential energy because the height of the vase to the floor is nearly zero.

The speed of the wave as it travels along the string is 2.5 m/s.

In transverse waves, the oscillations area perpendicular to the direction of the movement of the wave.

Given is that when a particular string is vibrated at a frequency of 10 Hz, a transverse wave of wavelength 0.25m is produced.

We can write the speed of the transverse wave as -

v = frequency x wavelength

v = fλ

v = 10 x 0.25

v = 10 x 25/100

v = 2.5 m/s

Therefore, the speed of the wave as it travels along the string is 2.5 m/s.

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Answer:

If one plays ice hockey he should must have necessary equipment to support his sport. These equipment include Ice Skates,Helmet with Cage and Mouth-guard:, Hockey stick, Hockey pants,Hockey gloves, shoulder pads, elbow pads, Shin Guard:Neck guard and Jockstrap (men) or Pelvic protector (women)

Explanation:

Answer:

If one plays ice hockey he should must have necessary equipment to support his sport. These equipment include Ice Skates,Helmet with Cage and Mouth-guard:, Hockey stick, Hockey pants,Hockey gloves, shoulder pads, elbow pads, Shin Guard:Neck guard and Jockstrap (men) or Pelvic protector (women).

The magnitude of the acceleration of the car is 0.463 m/s2.

In this question, we are given that: A 0.0501-kg pair of fuzzy dice is attached to the rearview mirror of a car by a short string. The car accelerates at constant rate, and the dice hang at an angle of 2.74o from the vertical because of the car's acceleration. We need to determine the magnitude of the acceleration of the car. Now, let's try to solve this question.

Step 1: Identify the given values m = 0.0501 kgθ = 2.74o

Step 2: Identify the required value a = ?

Step 3: The formula for the magnitude of the acceleration of the car can be given as F = m × aa = F / m where ,F = tension in the string

Step 4: Identify the forces acting on the fuzzy dice We know that there are two forces acting on the fuzzy dice. They are: Weight force acting on the fuzzy dice, Tension force acting on the string attached to the rearview mirror.

Step 5: Find the weight force acting on the fuzzy dice The weight force acting on the fuzzy dice can be given as W = mg Where ,m = 0.0501 kg (mass of the fuzzy dice)g = 9.8 m/s2 (acceleration due to gravity)W = 0.0501 × 9.8W = 0.49198 N

Step 6: Find the tension force acting on the string attached to the rearview mirror .We know that the tension force is acting along the string, T, which is attached to the rearview mirror. Therefore, the tension force is acting horizontally. Now, let's resolve the weight force acting on the fuzzy dice into two components: Horizontal component, F h Vertical component, F v Therefore ,F v = W = 0.49198 N Now ,F h = F × sinθwhere, θ = 2.74oFh = Tension force acting on the string acting horizontally = Tan θ × F v = Tan 2.74 × 0.49198 = 0.0232 N

Step 7: Find the acceleration of the car We know that the tension force acting on the string and the force applied by the car on the fuzzy dice are the same. Therefore   F = T Therefore ,a = F / m = 0.0232 / 0.0501a = 0.463 m/s2Therefore, the magnitude of the acceleration of the car is 0.463 m/s2.

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Answer:

hai >.<

Explanation:

Answer:

hello!

Explanation:

~evita

Answer:

Weight

Explanation:

WEIGHT - downward pull to the center of earth due to gravity

ACCELERATION - the rate of change of velocity

VELOCITY - rate of change if displacement in time

The major difference between the mass and weight is that mass of an object can never be zero but weight can be zero. The downward pull on an object due to gravity is called the weight. The correct option is B.

The measure of the force of gravity acting on a body is defined as the weight. Actually weight is a force and its SI unit is Newton (N). The weight of an object depends on the mass and acceleration due to gravity.

The formula used to calculate the weight is:

w = mg

m = Mass of an object

g = Acceleration due to gravity

Weight is found to be a vector quantity. Because it has both magnitude and direction. It is directed towards the center of the earth or other gravity well.

When objects fall to the ground, it is the gravity which accelerates them. So the force of gravity which pulls the object downward is called the weight.

Thus the correct option is B.

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Answer:

The time it will take for the driver to reach Ottawa is 3 hours 32 minutes and 45 seconds

Explanation:

The given parameters are;

Speed of the car = 120 km/h

Distance from Toronto to Ottawa = 425.5 km

The formula for speed is given as follows;

Speed = Distance/Time

Therefore, to find the time duration it takes from Toronto to Ottawa, we have;

Time duration = Distance from Toronto to Ottawa/(Speed of the car)

The time duration = 425.5/120 = 3.54583 hours = 212.75 min = 12765 seconds

The time it takes from Toronto to Ottawa while driving at 425.5 km/h = 12765 seconds.

Explanation:

Density = mass / volume

ρ = (500 g) / (8.0 cm × 6.0 cm × 5.0 cm)

ρ = 2.1 g/cm³

The volume of the block the product of its dimensions that is  240 cm³. Then density of the block weighing 500 g is 2.08 g/ cm³.

Density of a substance is the measure of its mass per unit volume. It describes how closely its particles are packed within a given volume. It is the ratio of mass to the volume.

Volume of an object is the space occupied by the object. For a rectangle block, volume is the product of length, width and height.

Given, l = 8 cm

width = 6 cm

h = 5 cm

volume =  l w h = 6 cm × 5 cm × 8 cm  = 240 cm³

Mass of the block = 500 g

density = mass/ volume

d = 500 g/240 cm³

   =  2.08 g/cm³

Therefore, the density of rectangular block is 2.08 g/cm³.

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Answer:

silk-ties fabric

rubber-rubber bands

cellulose-jeans

starch-food and paper

dna-genetic

Explanation:

Speed = Distance/Time

S = D/T

D = 0.9Km, T = 1.5hours,

S = 0.9/1.5

S = 0.6 m/s

hope it helps!

Answer: Speed =

distance = 0.9 * 1000 = 900 metres, because speed is measured in m/s so the km has to be converted to m

time = 1.5 * 60 = 90 seconds , because speed is measured in m/s so the time in minutes(m) has to be converted to seconds(s)

Speed =

          = 10m/s

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Explanation: I don't know what this is but this is what I found and I hope it's helpful

Answer:

7.2375m/s^2

Explanation:

initial velocity=-25 km/h=-6.94m/s

final velocity=35 km/h=9.72m.s

distance=3.2m

v^2=u^2+2as

9.72^2=-6.94^2+2a*3.2

94.48=48.16+6.4a

(94.48-48.16)/6.4=a

7.2375m/s^2

The concave mirror is represented by a vertical line MMl. The principal axis is represented by a horizontal line drawn on the PC. 1 mm. 12 mm (focal length: 12 cm); I Image position.

Here, u = 25 cm for the object distance (To the left of the mirror)

Also, the focal length is f = 20 cm (It is a concave mirror)

What is the size of the image in a concave mirror?

The size of image formed by a concave mirror is same as the size of object.

Use the magnification of a mirror formula to obtain the size of the object. Accordingly depict its nature using the sign of the image height. Where v is the image distance u is the object distance and f is the focal length.

However, if we increase the distance between the object and the mirror then the size of the image reduces and a real and inverted image is formed. The image formed by the concave mirror can be small or large and can be real or virtual.

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The concave mirror is represented by a vertical line MMl. The principal axis is represented by a horizontal line drawn on the PC. 1 mm. 12 mm (focal length: 12 cm); I Image position.

Here, u = 25 cm for the object distance (To the left of the mirror)

Also, the focal length is f = 20 cm (It is a concave mirror)

What is the size of the image in a concave mirror?

The size of image formed by a concave mirror is same as the size of object.

Use the magnification of a mirror formula to obtain the size of the object. Accordingly depict its nature using the sign of the image height. Where v is the image distance u is the object distance and f is the focal length.

However, if we increase the distance between the object and the mirror then the size of the image reduces and a real and inverted image is formed. The image formed by the concave mirror can be small or large and can be real or virtual.

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Answer:

Higher Amplitude = Higher Energy.

Explanation:

As you could see the higher number the amplitude is the energy also gets higher!

We can see the star sirius and its companion, the pup, moving around each other. Careful measurement of this motion can provide the masses of both stars in the system.

How do stars move?

The stars in our galaxy are all said to be orbiting in a nearly circular path around the center of the galaxy because the immense combined mass of the galaxy, which is mostly near the center, creates immense gravity that pulls all the stars in our galaxy into circular orbits.

The study of astronomy has helped us to understand that Stars rise in the northeast and set in the northwest, moving in counter-clockwise circles around a point that's high above the northern horizon.

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Answer:

False. Not everything can turn into a black hole. The formation of a black hole requires a massive object, typically a star, to collapse under its own gravity. This collapse causes the object to become so dense that it creates a singularity, a point of infinite density at the center of the black hole, which is surrounded by an event horizon, the point of no return beyond which nothing, not even light, can escape. So, only objects with sufficient mass and gravity can become black holes.

Explanation:

A metal ball and a wooden ball

hope it helps

The B in BLUE stands for "Best Linear Unbiased Estimator." The Gauss-Markov Theorem states that if assumptions 1-5 are satisfied, then the Ordinary Least Squares (OLS) estimator is the Best Linear Unbiased Estimator.

Let's break down the meaning of each term in the acronym:

1. Best: The OLS estimator is considered the best because it has the smallest variance among all linear unbiased estimators. In other words, it is the most efficient estimator among all unbiased estimators.

2. Linear: The OLS estimator is a linear combination of the dependent variable and the independent variables. It assumes a linear relationship between the variables.

3. Unbiased: The OLS estimator is unbiased, meaning that on average it will provide an estimate that is equal to the true population parameter being estimated. This implies that there is no systematic error in the estimation process.

4. Estimator: The OLS estimator is a statistical technique used to estimate unknown parameters in a linear regression model. It calculates the best-fit line that minimizes the sum of squared residuals.

The Gauss-Markov Theorem is important because it provides conditions under which the OLS estimator is the best among all linear unbiased estimators.

It ensures that if assumptions 1-5 are met, the OLS estimator will have the smallest variance and, be the most efficient estimator.
The Gauss-Markov Theorem states that if assumptions 1-5 are satisfied, the OLS estimator is the Best Linear Unbiased Estimator (BLUE) because it is the most efficient and unbiased estimator among all linear unbiased estimators.

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Answer: The Coriolis effect results in bending the direction of surface currents to the right in the Northern Hemisphere and left in the Southern Hemisphere. The Coriolis effect causes winds and currents to form the circular patterns. The direction in which they spin depends upon the hemisphere in which they are present.Coriolis Effect is named after the French mathematician and physicist Gaspard-Gustave de Coriolis. It affects the weather patterns of an area, it affects the ocean currents, and it also affects air quality.

Sum of 1,000,000 uranium atom's diameters in centimeters written in standard notation would be 0.0035 cm.



Adding a number 1,000,000 times is same as Multiplying that number with 1,0000,000. So multiplying the diameter of one atom with 1,000,000 would give the same result as adding the number 1,000,000 times would give.

Diameter = 3.5 × \(10^{-8}\)

                 = 3.5 ×\(10^{-8}\) × \(10^{6}\)

                 = 3.5 × \(10^{-8+6}\)  =  3.5 × \(10^{-2}\)

  answer  ≈ 0.0035 cm.

What is uranium -

Chemical element uranium has the atomic number 92 and the letter U. It is an actinide metal in the periodic table's silvery-gray series. Because all uranium isotopes are unstable and their half-lives are short, uranium has a low radioactivity.

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The time it takes the perfume to diffuse 2.0 m in the air is 55.55 hours.

Diffusion is the process by which molecules of a substance move from regions of higher concentration to regions of lower concentration until an equilibrium distribution of the molecules of the substance is achieved.

The diffusion time of the aromatic molecules is determined as follows:

The diffusion coefficient, D of the aromatic molecules in air = 2×10⁻⁵ m²/s.

The distance, L that the molecules will travel = 2.0 m

Time, t = L²/D

T = 2² / 2 × 10⁻⁵  

Time, t = 200000 second

time in hours = 55.55 hours

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Answer:

-47.04

Explanation:

Divide 12 m by 2.5 m/s which equals 4.8s

And then use 4.8s to multiply it with -9.8

4.8(-9.8)= -47.04 m/s

Hope this helped!! :)

The initial height of the pumpkin is 23.52m and the final vertical velocity of the pumpkin is 47.04 m/s.

Initial horizontal speed, u = 2.5 m/s

horizontal distance covered , d = 12m

So the time taken is:

t = d/u

t = 12/2.5 s

t = 4.8s

Now, the initial vertical speed, v = 0

So the vertical distance traveled by the pumpkin will be equal to the initial height of the pumpkin:

s = vt + ¹/₂gt²

s = 0.5 × 9.8 × 4.8 m

s = 23.52m

Final vertical velocity:

v' = v + gt

v' = 9.8 × 4.8 m/s

v' = 47.04 m/s

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The final velocity of the composite object is 12.20 m/s.

Given,Mass of the first object, m1 = 3 kg, Initial velocity of the first object, u1 = 5 i m/s, Mass of the second object, m2 = 2 kgInitial velocity of the second object, u2 = 23 j m/s. After the collision, both the objects stick to each other and move with a common velocity, v. Let's apply the law of conservation of momentum before and after the collision. Before collision:

m1u1 + m2u2 = 3 × 5 + 2 × 0

= 15 kg m/s + 0

= 15 kg m/s

After collision, the two objects stick together and move with a common velocity, v. Hence, using the principle of conservation of momentum:

m1u1 + m2u2 = (m1 + m2)v

⇒ 3 × 5 + 2 × 23

= (3 + 2)v

⇒ 15 + 46

= 5v

⇒ v = 61/5 m/s

So, the final velocity of the composite object is 12.2 m/s along a direction making an angle with the x-axis given by

tanθ = v_y/v_x

⇒ θ = tan⁻¹(v_y/v_x)

In this problem, we have an object of mass 3.00 kg, moving with an initial velocity of 5.00 i ^ m/s and a second object of mass 2.00 kg with an initial velocity of 23.00 j ^ m/s. The two objects collide and stick to each other. We are asked to find the final velocity of the composite object. To solve the problem, we need to apply the law of conservation of momentum. Before the collision, the total momentum is:

m1u1 + m2u2 = 3.00 × 5.00 + 2.00 × 0

= 15.00 kg m/s

After the collision, the two objects stick together and move with a common velocity v.

Hence, using the principle of conservation of momentum:

m1u1 + m2u2

= (m1 + m2)v

⇒ 3.00 × 5.00 + 2.00 × 23.00

= (3.00 + 2.00)v

⇒ 15.00 + 46.00

= 5.00vv

= (15.00 + 46.00)/5.00

= 12.20 m/s

The final velocity of the composite object is 12.20 m/s.

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The binding energy of electrons to the metal is 1.8 eV.

The maximum kinetic energy of the ejected electrons can be used to calculate the binding energy of the electrons to the metal.

The equation for this is E = hν - φ, where E is the maximum kinetic energy, h is Planck's constant, ν is the frequency of the violet light (which can be calculated from the given wavelength of 380 nm), and φ is the work function of the metal.

Rearranging this equation to solve for φ, we get φ = hν - E.

Plugging in the given values, we get φ = (6.626 × \(10^-^3^4\) J s)(3 × \(10^8\)m/s) / (380 ×\(10^-^9\) m) - 0.900 eV = 1.8 eV. Therefore, the binding energy of electrons to this metal is 1.8 eV.

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Option D from the following is the solution concentration expressed in terms of mortality because it represents the number of moles dissolved in a liter of the solution.

A chemical compound is a combination of two or more either similar or dissimilar chemical elements.

The molarity of a solution is expressed in terms of the number of moles dissolved per liter of the solution.

The number of moles dissolved in a liter of the solution, represented by option D from the following, is the solution concentration stated in terms of mortality.

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(a) If you double your driving speed,  time required to come to a stop will be halved (b) the distance needed to stop will be quadrupled.

Deceleration is defined as a decrease in velocity. Deceleration is slowing down. Negative acceleration is acceleration in the negative direction in the coordinate system. Negative acceleration may/ may not be deceleration and deceleration may /may not be negative acceleration.

If the brakes in a car create a constant deceleration, then time required to come to a stop is directly proportional to velocity, while the distance needed to stop is proportional to square of the velocity. So, if you double your driving speed, the time required to come to a stop will be halved, while the distance needed to stop will be quadrupled.

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