A standard filament light bulb has an efficiency rating of 18%. calculate the amount of light energy (useful work) that a 60w light bulb transfers each second. (1w = 1j/s)

The turntable's angular velocity is 0 rpm.

Before the blocks are dropped, the turntable has a certain angular momentum, given by:

L = Iω

where L is the angular momentum, I is the moment of inertia, and ω is the angular velocity.

The moment of inertia of a disc rotating about its central axis is:

I = (1/2)MR²

where M is the mass of the disc and R is its radius.

Substituting the given values, we get:

I = (1/2)(2.5 kg)(0.1 m)² = 0.0125 kg⋅m²

The initial angular velocity of the turntable is:

ωi = 100 rpm

The two blocks fall simultaneously and stick to the turntable, causing it to experience an angular impulse. Since the blocks stick together and rotate with the turntable after the collision, we can assume that no energy is lost in the collision.

The angular impulse is given by:

ΔL = IΔω

where ΔL is the change in angular momentum and Δω is the change in angular velocity.

Since the blocks hit the turntable simultaneously at opposite ends of a diameter, their contributions to the change in angular momentum cancel out. Therefore:

ΔL = 0

After the collision, the turntable and the two blocks rotate as one object, with a new moment of inertia:

I' = I + 2MR²

where M is the mass of each block.

Substituting the given values, we get:

I' = 0.0125 kg⋅m² + 2(0.55 kg)(0.1 m)² = 0.0195 kg⋅m²

The final angular velocity of the turntable is:

ωf = ΔL/I' = 0/0.0195 = 0

This means that the turntable stops rotating after the blocks are dropped and stick to it. Therefore, the final angular velocity is 0 rpm.

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You should slow your pwc to "slow, no wake speed" when within 100 feet of anchored vessels or non-motorized craft.

This is the process of operating a personal watercraft at the slowest possible speed.

This helps to maintain steerage which prevents different forms of accident or risks when in motion in the water.

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Answer:

it is 34

34 is th answer

Explanation:

(b) the set of points is in a plane

A circle has points in a plane, a center, a radius, and a diameter. Depending on the situation, at least one of the following words must be included in the definition of a circle:

Based on James' definition of a circle, he needed to specify that the points are in a plane (option b).

The phrase "the set of all the points," as he defines it, has a variety of meanings. among them are:

the set of points on a line.

a plane's set of points.

the region's collection of points

James should have made it clear that the collection of points is in a plane.

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The complete question is mentioned below:

James defines a circle as "the set of all the points equidistant from a given point." His statement is not precise enough

because he should specify that

(a) a circle includes its diameter

(b) the set of points is in a plane

(c) a circle includes its radius

(d) the set of points are collinear

The CRO (Cathode Ray Oscilloscope) will display a triangular wave that is vertically stretched and horizontally compressed.

The vertical deflection plates will cause the triangular wave to be displayed with a peak-to-peak amplitude of\(100 cm (50 V * 0.1 cm/V)\), while the horizontal deflection plates will cause  sawtooth wave to be displayed with a peak-to-peak amplitude of \(5000 cm (100 V * 0.02 cm/V).\) The synchronization of the two inputs will ensure that the triangular wave and the sawtooth wave are displayed in a coordinated manner, with each cycle of the sawtooth wave corresponding to five cycles of the triangular wave. The resulting display will show a pattern of diagonal lines that gradually rise and then quickly drop back to the starting position, with each line representing a cycle of the sawtooth wave.

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The gravitational force between Venus and the Sun, seperated at the distance of 1.082×10¹¹ m is 5.520×10²² N.

Gravitational force is the attractive force between two bodies. It is applicable to all the bodies have masses and it is called as Universal law of gravitation.

Grarvitational force is the attractive force is directly proportional to the product of two masses and is inversely proportional to the square of distance between them.

F ∝ m₁ × m₂ / d², m₁ and m₂ is the mass of two bodies and d² is the distance between two bodies. The SI unit of mass is kg and SI unit of distance is m. The SI unit of force is newton.

From the gravitational force,

F = G (m₁×m₂ / d²)

G represents gravitational constant and is equal to 6.67× 10⁻¹¹ N.m²/kg².

From the given,

m₁ ( mass of venus ) = 4.87 x 10²⁴kg

m₂ ( mass of sun) = 1.989 x 10³⁰ kg

d² ( distance between sun and venus) = 1.082 x 10¹¹ m.

G = 6.67 ×10⁻¹¹ N.m² / kg²

F = G (m₁×m₂ / d²)

  = 6.67 ×10⁻¹¹ × 4.87 x 10²⁴× 1.989 x 10³⁰ / (1.082 x 10¹¹)²

 = 5.520 × 10²² N

The gravitational force between the venus and sun at the distance of  1.082 x 10¹¹ is 5.520× 10²² N.

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Answer:

the answer to this question is A globular cluster

Answer:

The frequency, 'f', of a wave is given by the speed, 'v' of the wave and the wavelength, λ, of the wave

f = v/λ

The frequency, 'f', of a wave is also given by the inverse of the period, 'T', of the wave which is the time it takes the wave to complete an oscillation or a cycle

f 1/T

Therefore, the variables to be known to determine the frequency of a wave includes either, the velocity and the wavelength of the wave or the period of oscillation (the wave cycle) of the wave

Explanation:

Answer:

Inertia depends upon the force applied .

:(a) The work done during the isothermal transition is zero, and the heat produced is Q = T(S2 - S1). (b) The work done during the constant-entropy transition is W = n(coT2 - ThT1), and the heat produced is Q = nTh(T2 - T1).

(a) During an isothermal transition of an ideal gas from temperature T and entropy S1 to temperature T and entropy S2, the work done is zero. This is because the volume change during the transition occurs at a constant temperature, resulting in no net work.

The heat produced during this transition can be calculated using the formula Q = T(S2 - S1), where T is the temperature and S2 and S1 are the entropies at the respective states.

(b) In a constant-entropy transition of an ideal gas from temperature T1 and entropy S to temperature T2 and entropy S, the work done can be determined using the formula W = n(coT2 - ThT1), where n is the number of moles of the gas, co is the specific heat, and Th is the absolute temperature. The heat produced during this transition can be calculated using the formula Q = nTh(T2 - T1).

the calculations involved in determining the work done and heat produced during different thermodynamic transitions of an ideal gas.

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Answer:

The answer is water

Explanation:

it has a netural ph of 7.0

why is the only option milk?

The Ph for milk is about 6.5 to 6.7,  it varies becauses milks gets sour when it rots.

Answer:

this was 2 weeks ago, but im pretty sure the correct answers are:

B=c

C=d

D=b

hope this helps and is correct :)

The amount of charge on an electron is a fundamental concept in physics and chemistry. In short, the charge on an electron is a fundamental unit of electric charge in physics, and is equal to -1.602 x 10^-19 coulombs.

To understand the charge on an electron, it's important to first understand the concept of electric charge. Electric charge is a property of subatomic particles that determines their ability to interact with electromagnetic fields. Electric charge can be positive or negative.

Electrons are subatomic particles that have a negative charge. The charge of an electron is considered to be the basic unit of electric charge in physics. In other words, the charge on an electron is used as the reference point for all other charges. The charge of an electron is equal to -1.602 x 10^-19 coulombs.

This value was determined through experiments and is considered to be a fundamental constant of nature. The charge of an electron is an important value in many calculations and measurements in physics and chemistry, such as in determining the behavior of atoms and molecules in chemical reactions.

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v= constant

mass of the cart = 1.5 kg

m2 (added)= 7.5 kg

The equipment that are usually involved in the production of electricity are generators.

The most commonly used electricity generation equipment are Turbines. Different types of turbines are used such as:

An electrical generator is used along with the turbine to convert the mechanical energy produced by the turbine into electricity.

Some of the other equipment used to generate electricity are

Therefore, the equipment that are usually involved in the production of electricity are generators.

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Answer:

Non-electric appliances you might already own

Coffee percolator. They make delicious coffee and are convenient for camping trips. ...

French press: This is another coffee maker that is as easy to use as a percolator. ...

Manual mixer. ...

Hand flour mill. ...

Dough maker. ...

Food strainer. ...

Manual food processor. ...

Zeer clay pot fridge.

Explanation:

non-electric equipment are use in the production of a work piece that does not involve the use of electrical equipment

Answer:

Those who survived the bomb may become deaf or blind, as well as suffer catastrophic burns and injuries. Even people who were not seriously injured could become trapped within a structure or unable to navigate through the wreckage.

Explanation:

You should push the accelerator all the way to the floor and hold for five seconds if your engine is flooded with gasoline.

To find the answer, we need to know about the flooded engine.

Thus, we can conclude that, You should push the accelerator all the way to the floor and hold for five seconds if your engine is flooded with gasoline.

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The force between two point charges will decrease if the distance between them is increased.

The force between two point charges is governed by Coulomb's law, which states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Mathematically, Coulomb's law can be expressed as:

F = k * (q1 * q2) / r^2

where F is the force between the charges, k is the electrostatic constant, q1 and q2 are the magnitudes of the charges, and r is the distance between the charges.

According to Coulomb's law, as the distance between the charges increases, the force between them decreases. This is because the inverse square relationship means that the force decreases rapidly as the distance increases. Doubling the distance, for example, would result in a force that is only one-fourth (1/2^2) of the original force.

Therefore, if the distance between the two point charges in the given scenario is increased, the force exerted on each other will decrease. The exact value of the new force can be calculated by applying Coulomb's law with the new distance.

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The mass of the object with 100 N weight and 2.5 N/kg gravitational field strength is found out as 40 kg.

It is given to us that -

The object's weight = 100 N

The gravitational field strength = 2.5 N/kg

We have to find out the mass of the object.

We know that the formula for weight of an object is given as -

W = m * g ----- (1)

where,

m = mass of the object

g = gravitational field strength

Substituting the given values of weight of the object and gravitational field strength in the equation (1), we can find out the mass of the object as -

\(W = mg\\= > m =\frac{W}{g}\\ = > m = \frac{100}{2.5}\\ = > m = 40 kg\)

Thus, the mass of the object with 100 N weight and 2.5 N/kg gravitational field strength is found out as 40 kg.

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Answer:

A) v₁ = 5.66 [m/s]

Explanation:

To solve this problem we must use the definition of linear momentum conservation, which tells us that momentum is conservation before and after a collision.

The linear momentum is equal to the mass by the product of the Velocity.

P = m*v

where:

P = lineal momentum [kg*m/s]

m = mass [kg]

v = velocity [m/s]

Now, to the right side of the equal sign will take the linear momentum before the collision and to the left side of the equal sign as after the collision.

Pbefore = Pafter

(m₁*v₁) - (m₂*v₂) = (m₁*v₃) + (m₂*v₄)

where:

m₁ = mass of the car = 1450 [kg]

v₁ = velocity of the car before the collision [m/s]

m₂ = mass of the shopping cart = 60 [kg]

v₂ = velocity of the shopping cart before the collision = -1.2 [m/s]

v₃ = velocity of the car after the collision = 5.13 [m/s]

v₄ = velocity of the shopping cart after the collision = 11.75 [m/s]

Now replacing:

(1450*v₁) - (60*1.2) = (1450*5.13) + (60*11.75)

1450*v₁ - 72 = 7438.5 + 705

1450*v₁  = 7438.5 + 705 + 72

1450*v₁ = 8215.5

v₁ = 5.66 [m/s]

Answer:

5.67 m/s

Just did it.

The probability density function of X is plotted for a=1/2 and a=2.

The expected value of X (E[X]) is determined.

The expected value of 1/X (E[1/X]) is determined.

The variance of X (V[X]) is determined.

The median of X is determined.

When a=1/2, the probability density function of X is given by p(X=x∣a)=((1/2)+1)x(1/2)^0=(3/2)x for x∈[0,1]. When a=2, the probability density function becomes p(X=x∣a)=(2+1)x^2=3x^2 for x∈[0,1]. To plot the probability density function, we can assign different values of x within the range [0,1], calculate the corresponding probabilities using the given formulas, and plot the points on a graph.

The expected value of X (E[X]) is calculated by integrating the product of X and its probability density function over the range [0,1]. For a=1/2, E[X] = ∫(x * (3/2)x) dx from 0 to 1. For a=2, E[X] = ∫(x * 3x^2) dx from 0 to 1. By evaluating these integrals, we can determine the expected values.

The expected value of 1/X (E[1/X]) is calculated similarly to E[X], but instead of integrating X, we integrate 1/X using the respective probability density functions for different values of a.

The variance of X (V[X]) can be computed by taking the second moment of X (E[X^2]) minus the square of the first moment (E[X]) squared. V[X] = E[X^2] - (E[X])^2. By calculating E[X^2] using the probability density function and the expected values obtained in step 2, we can determine the variances for different values of a.

The median of X is the value of X such that the cumulative distribution function (CDF) is equal to 0.5. To find the median, we integrate the probability density function from 0 to the median value and set it equal to 0.5. Solving for the median provides its value in terms of the parameter a.

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Answer:

Electromagnetic wave

Explanation:

Snow days are announced on the by phoning the parents and guardians and also the news about a snow day can be broadcast on the television or radio airwaves or on the internet which are forms of electromagnetic wave transmission

An electromagnetic wave are oscillations of electric and magnetic fields which form electric and magnetic field vibrations

The direction of the oscillating electric and magnetic fields is perpendicular to the direction of propagation of the electromagnetic wave.

Velocity, acceleration, mass, and speed are fundamental concepts in physics that describe the motion and properties of objects.

A. Velocity is a vector quantity that describes an object's motion in terms of both magnitude and direction. For example, a car traveling east at 60 km/h has a velocity of 60 km/h eastward.

B. Acceleration is the rate at which an object's velocity changes over time, also a vector quantity. For instance, a car accelerating from 0 to 100 km/h in 10 seconds has an acceleration of 10 km/h per second.

C. Mass refers to the amount of matter in an object, typically measured in kilograms. An example of mass is a 1 kg bag of sugar, which contains a fixed quantity of matter regardless of its location or speed.

D. Speed is a scalar quantity, meaning it only has magnitude and no direction. It measures the distance an object travels per unit of time. For example, a bicycle traveling 15 km in 1 hour has a speed of 15 km/h.

Velocity and acceleration are vector quantities that involve both magnitude and direction, while mass is the amount of matter in an object, and speed is a scalar quantity measuring distance traveled over time.

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Answer:B

Explanation:

The force of gravitation depends on the mass of the object. As the mass increases, the speed of the falling object also increases because it experience more gravitational pull from earth. Thus, option D is correct.

Gravitational force is a kind of force by which an object attracts other objects into its center of mass. We are all standing on the ground because of the gravitational pull of earth.

Gravitational force is directly proportional to the mass of the objects and inversely proportional to the distance from the surface. Therefore, the force exerted by earth on massive body is greater than that on a light body.

Here, the ball with greater  mass hit the ground with less time compared to the one with less mass. Hence, the mass becomes a factor  affecting the speed of a falling object when the object is dropped a great distance from the surface of the earth. Thus, the massive body will be pulled more by earth.

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Answer:

The ratio of forces is 22 : 3.

Explanation:

Case I:

initial velocity, u = 35 mph

final velocity, v = 0

time, t = 15 ms

Case II:

initial velocity, u = 35 mph

final velocity, v = 0

time, t' = 110 ms

let the mass is m.

According to the Newton's second law, the force is given by the rate of change of momentum.

So

\(F =\frac{m(v-u)}{t}\\\\F'= \frac{m(v-u)}{t'}\\\\So, \frac{F}{F'} =\frac{t'}{t}\\\\\frac{F}{F'}=\frac{110}{15}=22:3\)

48 m/s in terms of km/h is 720.8 km/h. In terms of m/min is 2880 m/min, in terms of km/s is 0.048 km/s and in terms of km/min is 2.88 km/min.

To solve this question, we need to understand some terms. The unit of velocity is measured in m/s. It can be expressed in different units of velocity.

1 km (kilometer) = 1000 meter

1 h (hour) = 3600 seconds

1 minutes = 60 seconds

To convert m/s into km/h,

48 m/s * 3600/1000 =  172.8 km/h

To convert m/s into m/min,

48 m/s * 60 = 2880 m/min

To convert m/s into km/s,

48 m/s ÷ 1000 = 0.048 km/s

To convert m/s into km/minutes,

48 m/s * 60 / 1000 = 2.88 km/min

Therefore, the 48 m/s expressed is 172.8 km/h, 2880 m/min, 0.048 km/s and 2.88 km/min.

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48 m/s is equivalent to  172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

To express 48 m/s in different units of velocity:

km/h (kilometers per hour):

To convert m/s to km/h, we can use the conversion factor of 3.6 since 1 m/s is equal to 3.6 km/h.

48 m/s * (3.6 km/h / 1 m/s) = 172.8 km/h

Therefore, 48 m/s is equivalent to 172.8 km/h.

m/min (meters per minute):

To convert m/s to m/min, we can use the conversion factor of 60 since there are 60 seconds in a minute.

48 m/s * (60 m/min / 1 s) = 2880 m/min

Therefore, 48 m/s is equivalent to 2880 m/min.

km/s (kilometers per second):

Since 1 kilometer is equal to 1000 meters, to convert m/s to km/s, we divide the value by 1000.

48 m/s / 1000 = 0.048 km/s

Therefore, 48 m/s is equivalent to 0.048 km/s.

km/minute (kilometers per minute):

To convert m/s to km/minute, we first need to convert m/s to km/s (as calculated in the previous step) and then multiply by 60 to convert seconds to minutes.

0.048 km/s * 60 = 2.88 km/minute

So, 48 m/s is equivalent to 2.88 km/minute.

Hence, 48 m/s is equivalent to approximately 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

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Answer:

3.2 hours

Explanation:

400÷125=3.2

3.2 or 3 hours and 12 minutes.