What is the equation for momentum (p)?
O A. p = mgh
B. p = my
C. p = ma
O D. p = 127v2

(a) The pushing force is 4.1 N. (b) The pushing force supplies 2.05 W of power to the wire. (c) The induced current flows in a counterclockwise (CCW) direction with a magnitude of 2.05 A. (d) The power dissipated in the resistor is 8.2 W.

(a) To find the pushing force, we use the equation F = BIL, where B is the magnetic field strength, I is the induced current, and L is the length of the wire moving through the field. Since the wire is moving at a constant speed, the induced emf must balance the applied force. Thus, the pushing force is equal to the induced emf divided by the wire length. Substituting the given values, we get F = (0.41 T)(2.0 A)(0.1 m) = 4.1 N.

(b) The power supplied to the wire is P = Fv, where v is the velocity of the wire. Substituting the given values, we get P = (4.1 N)(0.5 m/s) = 2.05 W.

(c) According to Lenz's law, the direction of the induced current is such that it opposes the change in magnetic flux that caused it. In this case, the wire is moving towards the right, so the induced magnetic field will point out of the page. Therefore, the induced current flows in a counterclockwise (CCW) direction.

(d) The power dissipated in the resistor is given by P = I²R, where I is the current flowing through the resistor and R is its resistance. Substituting the given values, we get P = (2.05 A)²(2.0 Ω) = 8.2 W.

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(a) There is one wavelength (1680 nm) in the 300 to 700 nm range that exhibits fully constructive interference , (b) There are no restrictions on the wavelength for fully destructive interference.

To determine the number of different wavelengths in the 300 to 700 nm range that exhibit fully constructive or fully destructive interference in the reflected light from a soap film, we can use the equation for the phase shift in thin films:

2nt cosθ = mλ

Where:

• n is the refractive index of the film material (1.40 for soap film)

• t is the thickness of the film (600 nm)

• θ is the angle of incidence (perpendicular in this case)

• m is the order of interference (0 for fully destructive, 1 for fully constructive)

• λ is the wavelength of light

(a) For fully constructive interference, m = 1. Plugging the given values into the equation, we have:

2(1.40)(600 nm)cos90° = 1λ 1680 nm = λ

Therefore, there is only one wavelength in the 300 to 700 nm range that exhibits fully constructive interference, and it is 1680 nm.

(b) For fully destructive interference, m = 0. Again, substituting the values into the equation:

2(1.40)(600 nm)cos90° = 0λ

This equation simplifies to 0 = 0, indicating that there is no restriction on the wavelength for fully destructive interference.

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Therefore, approximately 19,739 turns per centimeter must be wound on the solenoid to produce a magnetic field of 0.5 Tesla within it.

To determine the number of turns per centimeter needed to produce a magnetic field within a solenoid, we can use the formula:

B = μ₀ * n * I

Where B is the magnetic field, μ₀ is the permeability of free space (4π x 10⁻⁷ T*m/A), n is the number of turns per meter, and I is the current in amperes.

To find the number of turns per centimeter, we need to convert the length units. There are 100 centimeters in a meter, so we divide the number of turns per meter by 100.

Let's assume we want a magnetic field of 0.5 Tesla (T) within the solenoid and the current is 2.0 A.

Using the formula, we have:

0.5 T = (4π x 10⁻⁷ T*m/A) * (n/100 turns/cm) * 2.0 A

Simplifying the equation, we can solve for n:

0.5 T = (8π x 10⁻⁷ T*m/A) * (n/100 turns/cm)

n = (0.5 T * 100 turns/cm) / (8π x 10⁻⁷ T*m/A)

Calculating this, we find:

n ≈ 19,739 turns/cm

In conclusion, to achieve a specific magnetic field within a solenoid, the number of turns per centimeter can be determined using the formula B = μ₀ * n * I.

By substituting the given values and solving the equation, we find that around 19,739 turns per centimeter are needed for a magnetic field of 0.5 Tesla with a current of 2.0 A.

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Answer:

6m/s^2

Explanation: this is because when the object is mass is increasing the object's acceleration will divide into two.

Answer: The number of neutrons

Explanation: trust me bro

Some chlorine atoms have an atomic mass of 37, while others have an

the atomic mass of 35.the difference between the two types of chlorine

atom is The number of neutrons, therefore the correct answer is option C

The total number of protons present in an atom is known as the atomic number of that atom. The atomic number has no correlation either with the number of neutrons or the number of electrons present inside an atom.

While the atomic mass of an atom is the sum of the total number of protons and the number of neutrons present inside of any atom.

Since there are chlorine atoms with an atomic mass of 37 and those with an atomic mass of 35. Option C is the appropriate response because the number of neutrons distinguishes between the two varieties of chlorine atoms.

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At 12,000 feet above sea level, the temperature is 38°F if the air temperatures at sea level is 80°F.

Daniel Gabriel Fahrenheit, a scientist, initially suggested the temperature measure known as the Fahrenheit scale in 1724. (1686–1736).

The sign for the unit is indeed the letter °F, which stands for degrees Fahrenheit. There are several stories about how he first developed his scale, but according to the first publication, the lower defining point, 0 °F, was chosen as the freezing point of a brine solution that was formed by mixing water, snow, and ammonium chloride (a salt).

His best guess for the normal temperature of a person, which was initially put at 90 °F and later adjusted to 96 °F (around 2.6 °F),The other limit established was lower than the actual value (due to a subsequent revision of the scale).

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Answer:

We just know that the metal is called Vibranium.

to place something is the table   we need to know its atomic number and its mass. so if we can get that we can ans it.

Explanation:

Answer:

they are

Explanation:

1.Frictional force

2.Applied force

3.Normal force

Answer:

A. Pu -239

Explanation:

An isotope is an element with the same atomic number but different mass number. most isotope are unstable, having short half life.

Curium-242 is an isotope produced when Plutonium 239 is bombarded by an alpha particle. This reaction between Plutonium 239 and alpha particle gives curium-242, neutron and a high amount of energy as the products.

Curium oxidizes easily, and it is a dangerous metal which can cause cancer initiation when absorbed by biological materials e.g bones or tissue.

Answer:

43.3 m/s.

Explanation:

Assuming the potential energy is due to the gravitational potential energy, we can use the conservation of energy to find the kinetic energy:

Total energy = Potential energy + Kinetic energy

Kinetic energy = Total energy - Potential energy

Kinetic energy = 300 J - 40 J = 260 J

However, we need to know the mass of the object to convert the kinetic energy to velocity. We can use the potential energy to find the mass:

Potential energy = mgh

40 J = m(9.81 m/s^2)(300 m)

m = 0.137 kg

Now we can use the kinetic energy to find the velocity:

Kinetic energy = (1/2)mv^2

260 J = (1/2)(0.137 kg)v^2

v^2 = (2*260 J) / 0.137 kg

v = 43.3 m/s (rounded to one decimal place)

Therefore, the kinetic energy is 260 J and the velocity of the object when it reaches the ground is 43.3 m/s.

Answer:

how much?

Explanation:

If the hoist tower isn't enclosed, the hoist platform must be totally enclosed on all sides for the full height between the floor and the overhead protective covering.

A hoist tower can be defined as temporary elevator shaft made of scaffolding that is constructed and used to provide pathways for hoisting materials during a building-construction work.

According to the Occupational Safety and Health Administration (OSHA), the hoist platform must be totally enclosed on all sides for the full height between the floor and the overhead protective covering when the hoist tower isn't enclosed.

In conclusion, the hoist platform must be totally enclosed on all sides in order to prevent a potential injury to construction workers or an accident during a building-construction work.

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Answer:

ZAMN

Explanation:

At hmax, Vy=0

vy=v0y-gt

0=6.32sin(36.3)-9.81t

t=.381 seconds

Δy=v0yt-.5gt^2

Δy=6.32sin(36.3)*.381-.5(9.81)(.381)^2

maximum height=.714 m

Answer:

They prolly dead lol.

Explanation:

XD THEY DEAD!!

The gravitational force acting on the sphere is equal and opposite to the electric force due to the sheet of charge, otherwise the sphere would move. Therefore, the value of q for the sphere to remain motionless is approximately 4.64 x 10^-7 C.

We can set these forces equal to each other and solve for q: Electric force per unit area on the sphere due to the sheet of charge is given by:

E = σ/2ε₀, where σ is the charge per unit area on the sheet of charge and ε₀ is the permittivity of free space.

Electric force on the sphere is then:

F = qE

Gravitational force on the sphere is:

F = mg

Setting these two equal to each other:

qE = mg

q = mg/E

Substituting in values:

q = (4.00 x 10^-3 kg)(9.81 m/s²)/(6.00 x 10^-6 C/m²)/(2ε₀)

Using the value for ε₀ in SI units (8.85 x 10^-12 C²/(N m²)):

q = (4.00 x 10^-3 kg)(9.81 m/s²)/(6.00 x 10^-6 C/m²)/(2(8.85 x 10^-12 C²/(N m²)))

q ≈ 4.64 x 10^-7 C

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Typically, the "refracted angle" is used to refer to the "angle of deviation."

Snell's Law is simply applied in this case.

Since n1sin1 = n2sin2,

The incidence angle is 1

The refracted angle is 2

The appropriate indices of refraction are n1 and n2.

the standard value for air, n1, is 1.

n2 = 1.5

As a result, the refractive indices of the two media may be related through the angle associated with incidence and refraction. The incident ray, the refracted ray, and the normal ray are all said to be on the same plane.

Snell's Law is particularly significant for optical technologies like fibre optics. According to Snell's Law, the refractive indices of the materials at the contact are proportional to the ratio of the sine of the angles of incidence and transmission.

The extension is obeyed by the e-ray Because the refractive index of an e-ray changes with the angle between the wave vector and optical axis, Snell's law applies. It is important to consider e-ray propagation in the uniaxial crystal.

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Answer:

this statement is true because I looked it up

The direction of the cart is left.

The ball ended up at the right because the action force of the cart is to the left while the reaction force of the ball is to the right.

Newton's first law of motion states that, an object at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force.

Newton's first law of motion is also known as law of inertia because it depends on the mass of the object.

This law implies that the ball in the middle of the cart cannot unless an external force acts on it.

The direction of the ball can be determined from Newton's third law of motion.

Newton's third law of motion states that, action and reaction are always equal and opposite.

If the ball ends up against the right lip of the cart, the cart must have moved left.

The action force of the cart is towards the left while the reaction force of the ball is towards the right.

Thus, we can conclude that Newton's third law of motion can help us determine the direction of motion of the cart.

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Answer:2.01201

Explanation:

Answer: 28.71 km

Explanation:

For the convex mirror (ocean):

Radius of curvature = 6.4*10^3 km

Focal length (f) = R/2 = 3.2*10^3 km

Object distance (u) = -3.84*10^5

Mirror formula: \(\frac{1}{u} + \frac{1}{v} = \frac{1}{f}\)

\(\frac{1}{u} + \frac{1}{v} = \frac{1}{f}\)

\(\frac{-1}{3.84*10^5} + \frac{1}{v} = \frac{1}{3.2*10^3}\)

v = 3173.55km

Magnification, \(m = \frac{-v}{u} = \frac{-3173.55}{-3.84*10^5} = \frac{h_{i} }{h_{o} }\)

So, height of image/height of object = 3173.55/3.84*10^5

Diameter of image = 3173.55/3.84*10^5 * 3475

Diameter of image = 28.71 km

Therefore, the diameter of the image is 28.71 km

Answer:

Generally it shows that the Earth will attain a velocity of

\(v= 4.0133*10^-15 m/s\)

Explanation:

From the question we are told that

Total Number N=300

Force=800

Time=0.10s

Weight of Earth \(W=5.98*10^24kg\)

Generally the equation for Impulse is Force *Time

\(Impulse =Force *Time\)

And

\(Force *Time=Change\ in\ momentum\)

Therefore

   \(300*10^6*800*0.1 = 5.98*10^24*v\)

   \(v= \frac{300*10^6*800*0.1}{5.98*10^2^4}\)

   \(v= \frac{2.4*10^1^0}{5.98*10^2^4}\)

   \(v= 4.01*10^-15 m/s\)

Generally it shows that the Earth will attain a velocity of

    \(v= 4.0133*10^-15 m/s\)

Answer:

The Principle of Progression

(I searched it up since I never learned this)

Explanation:

The principle of progression states that a person should start slowly and increase exercise gradually. Since Mandy is just getting started on her exercise routine, she should begin with a few workouts over a large span of time, then work her way up so she can do more workouts in a shorter span of time.

Answer:

119 cm

Explanation:

Given heights :  200cm , 188 cm , 175 cm, 160 cm

since the eyes are at 95% level

95% of 200 cm = 190 cm

95% of 160 cm = 152 cm

hence the allowable height of mirror = 200 - ( 5 + 76 ) = 119 cm

and The mirror should be hung 75cm from the floor

The ability of the people to choose their leaders is the primary characteristic of a democracy. So, in a sense, a democracy is a form of popular rule. The fundamental tenet is that by taking part in the creation of these laws, people rule themselves.

The legislative, executive, and judicial departments of government perform the legislative, executive, and judicial functions, respectively. These tasks are distributed among many institutions so that each one may check the others.

A democracy is a form of representative democracy. Every citizen has a voice (or a vote) in the management of the government. It differs from a monarchy or dictatorship, where all authority is vested in one person (the king or dictator).

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Answer:

Answer 4, 11k/min

Explanation:

From 0 - 1 km, it took 12 minutes

From 1 - 2 km, it took 10 minutes.

10 + 12 = 22

Divide the time by 2 km. 22/2 = 11

The statement that the Hubble Space Telescope gives us its best resolution with x-rays is false

The Hubble Space Telescope does not give its best resolution with X-rays.

Instead, it primarily observes in visible, ultraviolet, and near-infrared wavelengths, providing high-resolution images and data in these ranges.

Summary: The Hubble Space Telescope's best resolution is not achieved with X-rays but with visible, ultraviolet, and near-infrared wavelengths.

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the magnetic field along the axis at the centre of the solenoid is approximately 5.47 × 10⁻⁴ T.

The magnetic field along the axis at the centre of a solenoid can be calculated using the formula:

B = μ₀nI

Where B is the magnetic field, μ₀ is the permeability of free space (4π × 10⁻⁷ T m/A), n is the number of turns per unit length (n = N/L), and I is the current.

In this case, the length of the solenoid is 99 cm, the radius is 3.14 cm, and the current is 3.05 A. So we can calculate the number of turns per unit length as:

n = N/L = 450/0.99 = 454.5 turns/m

Now we can substitute these values into the formula:

B = μ₀nI = (4π × 10⁻⁷ T m/A)(454.5 turns/m)(3.05 A) ≈ 5.47 × 10⁻⁴ T

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