The displacement of a wave traveling in the negative y-direction
is D(y,t)=(9.0cm)sin(45y+70t+π)D(y,t)=(9.0cm)sin⁡(45y+70t+π), where
y is in m and t is in s.
What is the frequency of this wave?
Wh

you can eat burrito with hot taco and if school like?

When capacitors are connected in series, they have the same charge.

A capacitor is an electrical component that stores energy in an electrical field. Capacitance, measured in farads, is a measure of the capacitor's ability to store charge, and it is determined by the surface area of the conductive plates, the separation between them, and the dielectric constant of the material between them.

When capacitors are connected in series, the charge on each capacitor is the same, since charge conservation demands that the same amount of charge flows into each capacitor.

A common application of series capacitors is to produce a capacitor with a larger voltage rating than any of the individual capacitors. When a voltage V is applied across a set of N identical capacitors connected in series, the voltage across each capacitor is V/N.

The total energy stored in the capacitors is the sum of the energy stored in each capacitor separately: U₍total₎ = 1/2 C₍eq₎ V²

where: C₍eq₎ is the equivalent capacitance of the N capacitors connected in series.

Since the charge on each capacitor is the same, the equivalent capacitance of capacitors in series is given by: 1/C₍eq₎ = 1/C1 + 1/C2 + ... + 1/CN.

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\(\\ \rm\Rrightarrow v=u+at\)

\(\\ \rm\Rrightarrow t=\dfrac{v-u}{a}\)

\(\\ \rm\Rrightarrow t=\dfrac{0-7}{-3.5}\)

\(\\ \rm\Rrightarrow t=\dfrac{-7}{-3.5}\)

\(\\ \rm\Rrightarrow t=2s\)

In the northern hemisphere, south facades of a building have the largest amount of incident solar radiation in the winter.

During the winter months, the sun's path is lower in the sky, resulting in a higher solar angle on the southern side of the building. This allows the south-facing facade to receive more direct sunlight and maximize solar radiation absorption. In contrast, during the summer months, the sun's path is higher, causing the northern side to receive more direct sunlight, resulting in the south facade experiencing less incident solar radiation. In the northern hemisphere, south facades of a building have the largest amount of incident solar radiation in the winter.

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Answer:

Explanation: Any item travelling in a circular direction has a tangential velocity, which is its linear speed. In one full round of a turntable, a point on the outside edge travels further than a point close to the center.

Tangential Velocity formula- Vt= ωr

where,

Vt = Tangential velocity.

ω = angular velocity of the rotatory object.

r = radius of the circle whose tangent is to be measured.

Tangential velocity is always applied to any object which moves in a circular path.

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Answer:-

The terminal velocity of a steel ball 2 mm in diameter falling through glycerin is 44×10 - ²

cm/s (Given that specific gravity of steel = 8, specific gravity of steel =8, specific gravity of glycerin a 1.3, viscosity of glycerine 8.3 poise.) .

Answer:

640

Explanation:

cause you should just add the 2

It takes 10 second the package to reach the ground.

The package reaches the ground after 10 second and  it was dropped 1500 m far from the package landing.

Given parameters:

Altitude of the plane; h = 490 m.

Initial horizontal velocity of the plane; u = 150 m/s.

We have to find; time taken by  the package to reach the ground: t =?

And,  horizontal distance covered by the package before land; d = ?

We know that a free falling object has acceleration equal to acceleration due to gravity = g = 9.8 m/s².

So,

h = 1/2gt²

⇒ t = √(2h/g) = √(2×490/9.8) second = 10 second.

In this time,

horizontal distance covered by the package before land; d = ut

= 150 m/s × 10 s

= 1500 m.

Hence, the package reaches the ground after 10 second and  it was dropped 1500 m far from the package landing.

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Answer:

51.02m

Explanation:

KE = 1/2mv2

Where k.e = 250J

mass = 0.5 kg

g = 9.8 m/s2

250= 1/2×0.5×v^2

250= 0.5×0.5×v^2

250= 0.25v^2

v^2 = 250/0.25

v^2 = 1000

v =√1000

v = 31.62m/s

v^2= u^2-2gh........... (1)

Since the object will stop at it highest point, hence it final velocity there will be zero and since it is moving up against the gravity g= -9.8m/s^2. That was why the formula in equation 1 has a negative sign

From h = u^2/2g

Where v = 31.62m/s

g = 9.8m/s^2

H = (31.62m/s)^2/9.8×2

H= 1000/19.6

= 51.02m

Hence the height of it travelling will be

51.02m

The energy transferred as heat for a reversible isothermal expansion of an ideal gas at 132∘ C is 18,630 J.

We can use the relationship between heat, temperature, and entropy for an ideal gas undergoing a reversible process:

ΔS = Qrev/T

where ΔS is the change in entropy, Qrev is the heat transferred in a reversible process, and T is the temperature in Kelvin.

We can rearrange this equation to solve for Qrev:

Qrev = ΔS x T

Now we can plug in the given values:

ΔS = 46.0 J/K (given)

T = 132 + 273 = 405 K (since the temperature is given in Celsius, we add 273 to convert to Kelvin)

Qrev = 46.0 J/K x 405 K

Qrev = 18,630 J

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Answer: The law of conservation of energy is a physical law that states energy cannot be created or destroyed but may be changed from one form to another. Another way of stating this law of chemistry is to say the total energy of an isolated system.

Explanation:

Answer:

the sun gives off energy to the color panel

From the calculation, we can conclude that both race car A and B have the same magnitude of velocity but accelerate at different magnitude

VELOCITY AND ACCELERATION

The rate of change of displacement is called Velocity. While acceleration is the rate of change of velocity.

Given that  a race Car A accelerates on a straight track from 0 to 100 kilometers/second in 6 seconds.

Since acceleration = \(\frac{Change in velocity}{time taken} \)

a = 1000(100 - 0)/6

a = 100000/6

a = 16666.67 m/\(s^{2} \)

And race Car B accelerates on a straight track from 0 to 100 kilometers/second in 5 seconds.

acceleration =  \(\frac{Change in velocity}{time taken} \)

a = 1000(100 - 0)/5

a = 100000/5

a = 20000 m/\(s^{2} \)

From the calculation above, we can conclude that both race car A and B have the same magnitude of velocity but accelerate at different magnitude.

Race car A accelerates at 16666.67 m/\(s^{2} \), while race car B accelerates at 20000 m/\(s^{2} \)

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The energy required to convert 1.70 g of ice originally at -12°C into steam at 105°C is approximately 6162.95 Joules.

To calculate this energy, we need to consider the different energy changes involved in each phase transition. First, we calculate the energy required to heat the ice from -12°C to its melting point at 0°C using the specific heat capacity of ice. Then, we calculate the energy required to melt the ice at 0°C using the heat of fusion for ice. Next, we determine the energy needed to heat the resulting water from 0°C to 100°C using the specific heat capacity of water. Finally, we calculate the energy required to convert the water at 100°C into steam at 105°C using the heat of vaporization for water. Adding up all these energy changes, we find that the total energy required is approximately 6162.95 Joules. This calculation takes into account the various temperature changes and phase transitions that the substance undergoes. It highlights the significant amount of energy needed to convert ice to steam, involving both the heating of the substance and the energy required to change its state.

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A 10-kg weight is suspended in air by strong cable, then there is no work done in suspending the weight as the weight suspended in the air  does not move or experience any form of displacement.

Only Mass = 10 kg is given and no displacement so there is no work done as Work done = force * distance

In Physics, work done is defined as the amount of energy transferred when body is moved over a distance due to the action of external force.

The work done by a force is defined as the product of component of force in the direction of displacement and magnitude of this displacement.

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Answer:

physics is the study of functions, systems and and the explainable reasons why they do what they do.

Answer:

physics is the branch of science concerned with the nature and properties of matter and energy. it includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.

Answer:

Capricorn what is yours

Answer:

leo

Explanation:

According to 501.105 (A) of the National Electrical Code (NEC), enclosures identified for Class I, Division 1 locations should be provided in Class I, Division 1 locations, transformers, etc.

The National Electrical Code (NEC) can be defined as a regional standard that is adopted by various municipalities, cities and state, in order to ensure the safe installation of electrical wiring, machineries (equipment), transformers, impedance coils, and resistors in the United States of America.

Basically, the main purpose of the National Electrical Code (NEC) is to enable safe and effective electrical practices and installations in the United States of America.

According to 501.105 (A) of the National Electrical Code (NEC), the following location and equipment should be provided with enclosures identified for Class I, Division 1 locations:

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Answer:

R = 24 cm

Explanation:

Given that,

A spherical mirror used in solar furnace focuses sunlight on its principal axis at a distance 12 cm from its pole. It means the focal length of the mirror is equal to 12 cm

We need to find the radius of curvature of the mirror. Let it is R. We know that the relation between radius of curvature and the focal length is given by :

R = 2f

So,

\(R=2\times 12\\\\=24\ cm\)

So, the radius of curvature of the mirror is equal to 24 cm.

The angular acceleration is - 60 revs/min² or - π /30 rad/s². The result is obtained by using the formula for acceleration.

An angular acceleration or rotational acceleration is the rate of change in angular velocity per unit time. It can be expressed as

α = Δω/t

Where

Revs/min is read revolutions per minute. It is equal to 2π/60 rad/s.

A helicopter rotor slows down at a constant rate.

Find the angular acceleration and the units of this acceleration!

The angular acceleration is

α = Δω/t

α = (ω₂ - ω₁)/t

α = (260 - 350)/1.5

α = (-90)/1.5

α = - 60 revs/min²

The unit of the acceleration can be changed in rad/s².

α = - 60 revs/min²

α = - 60 × 2π rad × 1/360 /s²

α = - π /30 rad/s²

Hence, the angular acceleration is - 60 revs/min² or - π /30 rad/s².

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Answer:

false plz mark brainliest

Answer:

\(\boxed {\boxed {\sf 96 \ m/s}}\)

Explanation:

We are asked to find the final velocity of the car given the acceleration and time. We can use the following kinematics equation to calculate the final velocity.

\(v_f=v_i+(a \times t)\)

The car starts from rest, so the initial velocity is 0 meters per second. It accelerates a rate of 40 meters per square second over a period of time of 2.4 seconds.

Substitute the values into the formula.

\(v_f= 0 \ m/s + ( 40 \ m/s^2 \times2.4 \ s)\)

Solve inside the parentheses.

\(v_f= 0 \ m/s + (96 \ m/s)\)

Add.

\(v_f= 96 \ m/s\)

The final velocity of the car is 96 meters per second.

Answer:

\(f=7.5\times 10^{14}\ Hz\)

Explanation:

Given that,

The wavelength of light, \(\lambda=400\ nm=400\times 10^{-9}\ m\)

The speed of light, \(c=3\times 10^8\ m/s\)

We need to find the frequency of light. We know that,

\(c=f\lambda\)

Where

f is the frequency

So,

\(f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{400\times 10^{-9}}\\\\f=7.5\times 10^{14}\ Hz\)

So, the frequency of light is \(7.5\times 10^{14}\ Hz\).

Answer:

we need more info

Explanation:

Answer:

First you take a hula hoop and hold it around your waist then you start moving your hips in a circle and let the hula  hoop go off your hands and you keep moving your hips. You keep moving your hips until you want to stop but it might fall. Just keep trying and you should get the hang of it in a few minutes.

Explanation:

Answer:

Heat capacity, Q = 2090 Joules.

Explanation:

Given the following data;

Mass = 100 grams

Specific heat capacity = 4.18 J/g°C.

Temperature = 5°C

To find the quantity of heat required;

Heat capacity is given by the formula;

\( Q = mct\)

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

t represents the temperature of an object.

Substituting into the formula, we have;

\( Q = 100*4.18*5 \)

Heat capacity, Q = 2090 Joules.

Frictional force is the force that opposes the motion or attempted motion of an object in contact with another object or surface. From the question,  the frictional force opposing the applied force is 7.85 N.

The frictional force can be arrived at by using the formula below:

Frictional force = coefficient of friction * normal force

where the normal force is the force exerted by the table on the block and is equal to the weight of the block, which is:

Normal force = mass * gravitational acceleration = 4.0 kg * 9.81 m/s²= 39.24 N

So, the frictional force is:

Frictional force = 0.20 * 39.24 N = 7.85 N

Therefore, the frictional force opposing the 20 N applied force is 7.85 N.

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To determine the angular displacement of the record during the given period of acceleration, we can use the equations of rotational motion.

The initial angular velocity of the record, ω₁, can be calculated by converting the initial speed from revolutions per minute (rpm) to radians per second (rad/s):ω₁ = (33 rpm) * (2π rad/1 min) * (1 min/60 s) = 11π/10 rad/s.The final angular velocity of the record, ω₂, can be calculated in the same way:ω₂ = (78 rpm) * (2π rad/1 min) * (1 min/60 s) = 13π/5 rad/s

The angular displacement, Δθ, can be calculated using the equation:

Δθ = ω₁ * t + (1/2) * α * t², where t is the time interval and α is the angular acceleration.

Given that the angular acceleration is 2.0 rad/s², we need to find the time interval, t. The change in angular velocity, Δω, can be calculated as:Δω = ω₂ - ω₁ = (13π/5) - (11π/10) = π/2 rad/s

We can use the equation Δω = α * t to solve for t:

π/2 = 2.0 * t

t = π/4 s

Now we can substitute the values into the equation for angular displacement:

Δθ = ω₁ * t + (1/2) * α * t²

Δθ = (11π/10) * (π/4) + (1/2) * (2.0) * (π/4)²

Δθ = (11π/10) * (π/4) + (π/8)

Δθ = 11π²/40 + π/8

Δθ = (11π² + 5π)/40

Therefore, the angular displacement of the record during this period of acceleration is (11π² + 5π)/40 radians.

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The greatest height reached by the ball is given by A(z) and the horizontal distance to the thrower's feet at this point is denoted as D.

The height from which the ball was thrown is represented as H. The horizontal distance to the thrower when the ball hits the ground is denoted as Dg.

The greatest height reached by the ball is A(z), and the horizontal distance to the thrower's feet at this point is D. The ball was thrown from a height of H.

The horizontal distance to the thrower when the ball hits the ground is Dg.

To find the greatest height reached by the ball, we need to analyze the function A(z). The horizontal distance D to the thrower's feet at this point can be determined by considering the horizontal component of the ball's motion.

To calculate the height from which the ball was thrown, we can use the initial condition or other given information.

Finally, to determine the horizontal distance Dg when the ball hits the ground, we need to analyze the ball's trajectory and identify the point at which its height becomes zero.

These calculations involve analyzing the ball's motion in both the horizontal and vertical dimensions, incorporating factors such as initial velocity, angle of projection, and gravitational acceleration.

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The force of friction is a force that resists the relative motion of two surfaces that are in contact with each other.

Friction is a force that resists motion when two objects come into contact with each other. It is a force that acts in the opposite direction to the motion of the objects and is generated by the objects rubbing against each other. Friction is the force that opposes the motion of two objects when they interact. It is a type of contact force that is created when two surfaces rub against each other. It is what causes the objects to slow down or stop when they come into contact with each other. Friction is an essential force in everyday life, from the brakes in a car to the shoes that we wear to walk.

It is determined by the coefficient of friction between the two surfaces, which is a measure of their relative roughness, and the normal force pressing the two surfaces together. The force of friction does not depend on the surface area or the bumpiness of the surfaces.

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