find the frequency range of visible light, given that it encompasses wavelengths from 380 to 760 nm.

Answer:

v = 150 m/s

Explanation:

Given that,

The acceleration of the ball, a = 10 m/s²

Time, t = 15 s

We need to find the increase in ball's velocity. When it is dropped its initial velocity is equal to 0. Let v be the velocity,

v = u+at

v = 0 +10(15)

v = 150 m/s

So, the ball's final velocity is 150 m/s.

Answer:

So work require will be 3888×10×10³J

Explanation:

⇒Work done=Change in kinetic energy

⇒KE=1/2mv²

⇒Mass->15000kg

⇒Velocity->72km/h

⇒KE=1/2×15000×(72)²

⇒KE=1/2×15000×5184

⇒KE=7500×5184

⇒KE=3888×10×10³J

The coefficient of kinetic friction between the runners of the sled and the snow is 0.36.

The problem can be solved using the equation FNet=ma, where FNet represents the net force acting on the sled, m is its mass, and a is its acceleration.

To find the net force, we need to subtract the force of friction from the applied force.

We can calculate the force of friction using the formula Ff = u k F n, where u k is the coefficient of kinetic friction, and F n is the normal force (equal to the weight of the sled in this case). Solving for u k, we get 0.36, which means that the force required to keep the sled moving at a constant speed would be 0.36 times the normal force of the sled on the snow.

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Answer:

10 N

Explanation:

\(f = ma\)

= 10m/s^2 * 1 kg

=10N

In the first circuit, the voltage across each resistor for r1, r2, and r3 is 11.5 V, 5.75 V, and 2.3 V, respectively, while the current through each resistor is 0.23 A. The current through r1 in the second circuit is 0.23 A, while the currents through r2, r3, and r4 are 0.46 A.

Ohm's Law, which states that voltage equals current times resistance in a circuit, is used to determine the voltage across each resistor in the first circuit. As the overall resistance of the circuit (R total) is 85 (50 + 25 + 10 ) and the battery's voltage is 23 V, the total current (I total) is 0.27 A (V/I = R total, 23/0.27 = 85). Kirchhoff's Current Law, which stipulates that the total current entering a node must equal the total current leaving that node, may be used to determine the current flowing through each resistor in the second circuit. The total current entering that node is 0.23 A since r1 has a 0.23 A current through it and r2, r3, and r4 are connected in parallel.

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Explanation:

You left out some important information.....but the bullet will fall the vertical distance ( the height)  from which it was fired.

Answer:

The acceleration is 5 \(m/s^2\)

Explanation:

We can use Newton's Second Law of Motion to evaluate the acceleration.

Newton's Second Law states

\(F_{net} =ma\)

Given the Net Force and the mass we can evaluate the acceleration.

\(F_{net} =ma\)

Divide both sides of the equation by \(m\).

\(\frac{F_{net} }{m} =a\)

We are given

\(F_{net} =27500\\m=5500\)

Substituting our values into the equation gives us

\(\frac{27500 }{5500} =a\)

\(a=5\)

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Newton's 2nd law of motion says:

Net force = (mass) · (acceleration) .

Newton didn't make up this law for his health.

Let's use it to answer this question about the car moving down the road.

Net force on the car = (car's mass) · (car's acceleration).

But the net force on the car is zero.  So we can write:

0 = (car's mass) · (car's acceleration).

Look at the right side of this equation.

Newton's law tells us that the product of the car's mass and the car's acceleration is zero.

That tells us that at least one of three things must be true.

Either 1). the car's mass is zero, or 2). the car's acceleration is zero, or 3). Newton was crazy.

We're pretty sure that 1). and 3). are false. The car's acceleration is zero.

What does this mean ? It means that the car's speed and direction are not changing.

That's exactly what Choice-B says.

Answer:

Bent knees

Explanation:

Depending the height your jumping from, if you were jumping from a high structure it's best if you jump and land on knees so you dont sprang your ankles from jumping and landing on your straight legs, you could even pull a muscle if you land on straight legs.

Answer:

dₓ = 1.35 m

dy = 1.86 m

Explanation:

In order to find the vertical and horizontal components of the displacement, we can assume a right triangle. Such that, the length of string is the hypotenuse, making and angle of 54° with the base of triangle. The base is the horizontal component of displacement. And the perpendicular is the vertical component of displacement. Therefore:

\(d_{x} = d\ Cos\ \theta\)

where,

dₓ = horizontal component of displacement = ?

d = resultant displacement = 2.3 m

θ = angle between displacement and ground = 54°

Therefore,

\(d_{x} = (2.3\ m)\ Cos\ 54^0\)

dₓ = 1.35 m

For vertical component of displacement:

\(d_{y} = d\ Sin\ \theta\\d_{y} = (2.3\ m)\ Sin\ 54^0\)

dy = 1.86 m

Answer:

1. 11 A

2. 240 V

3. 8 Ω

4. 60 C

5. 14400 C

Explanation:

1. Determination of the current.

Voltage (V) = 110 V

Resistance (R) = 10 Ω

Current (I) =?

V = IR

110 = I × 10

Divide both side by 10

I = 110 / 10

I = 11 A

2. Determination of the voltage

Current (I) = 3 A

Resistance (R) = 80 Ω

Voltage (V) =?

V = IR

V = 3 × 80

V = 240 V

3. Determination of the resistance.

Current (I) = 0.5 A

Voltage (V) = 4 V

Resistance (R) =?

V = IR

4 = 0.5 × R

Divide both side by 0.5

R = 4 / 0.5

R = 8 Ω

4. Determination of the charge

Current (I) = 2 A

Time (t) = 30 s

Charge (Q) =?

Q = it

Q = 2 × 30

Q = 60 C

5. Determination of the charge.

We'll begin by converting 20 mins to seconds. This can be obtained as follow:

1 min = 60 s

Therefore,

20 mins = 20 × 60

20 mins = 1200 s

Finally, we shall determine the charge as follow:

Current (I) = 12 A

Time (t) = 1200 s

Charge (Q) =?

Q = it

Q = 12 × 1200

Q = 14400 C

The sound pressure ratio ranges from 10,000 to 1,00,000. The decibel level ranges from 80 dB to 100 dB.

The meaning of sound pressure is the discrepancy between the actual pressure and average pressure at any given instant at any place in the field of a sound wave.

The intensity of a sound, expressed in decibels, is known as sound pressure level (SPL) (dB).

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A solid disk of mass 2.5 kg and radius 0.82 m that rotates in the z-y plane is an example of rotational motion. The disk is spinning around its central axis, which is perpendicular to the plane of the disk. The motion of the disk can be described in terms of its angular velocity and angular acceleration.

The angular velocity of the disk is the rate at which the disk is rotating. It is measured in radians per second and is given by the formula ω = v/r, where v is the linear velocity of a point on the edge of the disk and r is the radius of the disk. The angular velocity of the disk remains constant as long as there is no external torque acting on it.The angular acceleration of the disk is the rate at which its angular velocity is changing. It is given by the formula α = τ/I, where τ is the torque acting on the disk and I is the moment of inertia of the disk. The moment of inertia is a measure of the disk's resistance to rotational motion and depends on the mass distribution of the disk.

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The Senate and House of Representatives voting on the finalized bill.

Once a bill has been introduced, it must be passed by both the Senate and the House of Representatives in identical form.

What is Veto Power?

Veto power is the power of an individual or group to reject a decision or proposal made by others. In a political context, veto power is often held by the executive branch of government, such as a president or a governor, who can veto a bill passed by the legislative branch, such as a parliament or a congress. By vetoing a bill, the executive can prevent it from becoming law, unless the veto is overridden by a supermajority of the legislative branch.

If the bill is passed by both the Senate and the House of Representatives, it is then sent to the President for signature. If the President vetoes the bill, Congress can override the veto with a two-thirds vote in both the House and Senate. Once a bill has been enacted, it becomes a law and is part of the United States Code.

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If the distance between two objects is 4.00 m and the distance is tripled, then the new distance will be 12.00 m.

To find out the new distance, you need to multiply the original distance by the factor by which it is tripled, which is 3.In other words, if the distance between two objects is "d", and it is tripled, then the new distance is 3d.

Using this formula, if the original distance is 4.00 m, then the new distance will be 3 x 4.00 m = 12.00 m.

The new distance is three times the original distance.

Therefore, the new distance between the two objects will be 12.00 meters if the original distance was 4.00 meters and it was tripled.

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The density distributions (i) and (ii) can be sketched as functions of x for different times, providing insights into their behavior over time.

The flux of material (q) past any point x at any time t can be determined by multiplying the density gradient (∂rho/∂x) with the diffusion coefficient µ. This represents the flow of material per unit area perpendicular to the x-axis, indicating the rate of material transport.

To sketch the density distributions (i) and (ii), we can plot the density values as a function of x for various time values. For distribution (i), the density decreases with increasing distance from the origin, forming a bell-shaped curve that decreases over time.

The rate of decrease depends on the diffusion coefficient µ. For distribution (ii), the density linearly decreases with increasing distance from the origin and remains constant over time. These sketches provide visual representations of how the density of the material changes spatially and temporally.

To verify that the density distributions satisfy the diffusion equation, we need to compare the equations with the given distribution forms.

By taking the partial derivative of density with respect to time (∂rho/∂t) and the second partial derivative of density with respect to x (∂²rho/∂x²), we can confirm whether they are proportional to each other with a factor of µ. If the resulting equations match, it indicates that the distributions satisfy the diffusion equation.

The flux of material (q) past any point x at any time t is determined by multiplying the density gradient (∂rho/∂x) with the diffusion coefficient µ. This represents the rate at which material is flowing through a specific point in the x-direction.

It provides information about the amount of material passing through a given area per unit time, highlighting the transport properties of the material.

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Answer:

Convex lens

hope that helps you

]The low-voltage control circuit for a typical residential air-conditioning system typically draws a maximum of 0.5 to 2 amperes (A) of current.

The low-voltage control circuit is responsible for controlling the operation of the air conditioning system, such as turning it on and off, adjusting the thermostat, and monitoring the system's performance. This circuit operates at a lower voltage than the high-voltage circuit that powers the air conditioner's compressor and fan motor.

The amperage drawn by the low-voltage control circuit in a typical residential air conditioning system is relatively low, typically ranging from 0.5 to 2 amperes (A). This is because the low-voltage circuit only needs to power small components such as relays, contactors, and thermostat sensors. In contrast, the high-voltage circuit that powers the compressor and fan motor requires much higher amperage, typically ranging from 15 to 50 amperes (A) depending on the size and capacity of the air conditioning system.

It's important to note that the exact amperage drawn by the low-voltage control circuit may vary depending on the specific make and model of the air conditioning system. However, most residential air conditioning systems have a low-voltage control circuit that draws a relatively low amount of current.

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Answer:

30 m

Explanation:

Potential energy = kinetic energy + rotational energy

PE = KE + RE

mgh = ½ mv² + ½ Iω²

For a disk, I = ½ mr².  For rolling without slipping, ω = v/r.

mgh = ½ mv² + ½ (½ mr²) (v/r)²

mgh = ½ mv² + ¼ m v²

mgh = ¾ m v²

gh = ¾ v²

h = 3v² / (4g)

h = 3 (20 m/s)² / (4 × 10 m/s²)

h = 30 m

The total mechanical energy of the bicyclist is 1400 J, obtained by adding her potential energy of 720 J and kinetic energy of 680 J. The correct answer is option B.

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Answer:It is regarded as impartial because it is based on established biological science. It has shed light on the causes of some conditions, including GPI and Alzheimer's disease, an organic condition that causes elderly people to become confused. Treatment is convenient, inexpensive, and simple to administer when compared to other options.  

Disability is viewed as something 'wrong' with a person's body or mind in the medical model. The medical model has been chastised for treating the impairment as the most important aspect of the person and implying that the person is powerless to change it.

Explanation:

A 200-W heater emits a 1.5-μm radiation. Here is the answer of all asked questions

(a) The energy quantum emitted by the 1.5-μm radiation is 8.26 x 10^-20 J.

(b) To increase the temperature of a 4.0-kg body by 2 K, approximately 3.7 x 10^21 photons must be absorbed by the body.

(c) The heating process will take approximately 21.8 minutes, assuming that all radiation emitted by the heater gets absorbed by the body.

Here is the explanation :

(a) The energy quantum emitted by a radiation can be calculated using the formula E = hc/λ, where E is the energy quantum, h is Planck's constant, c is the speed of light, and λ is the wavelength of the radiation. Substituting the given values, we get E = (6.63 x 10^-34 J s)(3 x 10^8 m/s)/(1.5 x 10^-6 m) = 8.26 x 10^-20 J.

(b) To calculate the number of photons required to increase the temperature of a body, we can use the formula Q = mcΔT, where Q is the heat required, m is the mass of the body, c is the specific heat of the body, and ΔT is the change in temperature. Rearranging the formula to solve for the number of photons, we get:

Number of photons = Q/E = mcΔT/E

Substituting the given values, we get:

Number of photons = (4.0 kg)(0.83 kcal/kg · K)(2 K)/(8.26 x 10^-20 J) = 3.7 x 10^21 photons.

(c) The time required for the heating process can be calculated using the formula t = Q/P, where t is the time, Q is the heat required, and P is the power of the heater. Since the energy emitted by the heater is given by E = Pt, we can rewrite the formula as t = Q/E. Substituting the given values, we get:

t = (4.0 kg)(0.83 kcal/kg · K)(2 K)/(200 W)(4.18 J/kcal) = 21.8 minutes.

Therefore, the heating process will take approximately 21.8 minutes, assuming that all radiation emitted by the heater gets absorbed by the body.

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The ratio of the magnitude of the electrostatic force to that of the gravitational attraction between the electron and proton in a hydrogen atom can be determined using the formula for each force.

The electrostatic force between two charged particles is given by Coulomb's Law, which states that  where F_e is the electrostatic force, k is the electrostatic constant, q1 and q2 are the charges of the particles, and r is the distance between them.

On the other hand, the gravitational force between two objects is given by Newton's Law of Universal Gravitation, which states that where F_g is the gravitational force, G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between them. In the case of a hydrogen atom, the charges of the electron and proton are equal in magnitude but opposite in sign. Therefore, q1 = -q2. Additionally, the mass of the electron is much smaller than the mass of the proton, so m1 << m2.

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Answer:

The bullet that is fired will spend longer  in the air, hitting the ground after the  dropped bullet.

Explanation:

Using the equation: x =  x 0  +   v t

If we neglect the effects of air resistance, the horizontal motion is a constant velocity.

The horizontal displacement = (velocity X cosθ)

So, the fired bullet has to travel horizontally before falling which takes a  longer time compared to a bullet dropped where it is, height = 1/2 gt^2

gravity, g = 9.8 m/s2.

The time spent in air for the bullet projected at angle depends on the initial velocity of the bullet and angle of projection while bullet dropped from the same height depends on the final velocity of the bullet which depends on the height from the which the bullet was

The given parameters;

The time taken for the bullet fired at angle to return to the ground level is calculated as;

\(T = \frac{2 \times usin(30)}{g} \\\\T = \frac{u}{g}\)

where;

The time taken for bullet dropped from the same height to reach the ground is calculated as;

\(v_f = v_0 + gt\\\\t = \frac{v_f - v_0}{g} \\\\t = \frac{v_f}{g}\)

where

Thus, we can conclude that the time spent in air for the bullet projected at angle depends on the initial velocity of the bullet and angle of projection while bullet dropped from the same height depends on the final velocity of the bullet which depends on the height from the which the bullet was dropped.

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Blood travels throughout the body as follows:

Circulation is the continuous movement of blood throughout the body by the circulatory system. It consists of the heart, blood vessels (arteries, veins, and capillaries), and blood. The heart acts as a pump, sending oxygen-rich blood through the arteries to the body's cells, and then returning oxygen-depleted blood through the veins back to the heart.

The exchange of oxygen, nutrients, and waste products between the blood and cells occurs through the capillaries. This continuous flow of blood helps to maintain the body's functions and overall health.

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The frequency of the violet light is\(7.5 x 10^14 Hz (Hertz).\)

The frequency of the wave is determined by dividing the velocity of light by its wavelength.

\(v=f/λWhere:v = velocity of light f = frequency λ = wavelength of the light\)

The speed of light is\(3.00 x 10^8\) meters per second (m/s).

To convert 400 cm into meters, divide 400 by 100. 400 cm = 4 m

Therefore,λ = 4 meters

Plugging these values into the formula, \(v = (3.00 x 10^8 m/s) / (4 m) = 7.5 x 10^14 Hz\)

So, the frequency of the violet light with a wavelength of \(400 cm is 7.5 x 10^14 Hz.\)

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The magnitude of the normal force that the floor exerts on the crate is 1180 N.

The magnitude of the normal force that the crate exerts on the person is 689 N.  a 46.9 kg crate is resting on a horizontal floor, and a 71.9 kg person is standing on the crate, the system will be analyzed. Note that the coefficient of static friction has not been provided, therefore we will assume that the crate is not in motion (otherwise, the coefficient of kinetic friction would have to be provided).  

that when the crate is resting on the floor and a person of mass 71.9 kg stands on it then the system will be analyzed to determine the normal force. normal forces acting on the crate and on the person are labeled and the normal force acting on the crate is the one that will balance out the weight of the crate plus the weight of the person (the system is at rest, therefore the net force acting on it is zero). Mathematically

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Answer: An object is dropped from a height of 75.0 m above ground level.

Explanation: I hoped that helped !