Marci drops a ball off the top of the Empire state building. How fast is the ball traveling after 4 seconds? (assuming there is no air)

In the given figure, if I = 2A and I2 = 6A, the relation between F1 and F2 is, F1 = F2.

The two forces are an action reaction forces. They act on different wires, and have equal magnitudes but opposite directions. So, they are equal.

We find the discussion of action and reaction forces in newton's third law.

According to the Newton's third law states that If there is an action force, there must be a reaction force. If there is an object A which exerts a force on object B, then object B must also exerts an equal and opposite force on object A. In other words, we can say that forces result from interactions.

Action and reaction forces acts on different objects. they exist in pair. They are always equal in magnitude and opposite in direction.

The given question is incomplete, the complete question is

n figure given below, I1-2A and I2=6a, which of the following is true? Note that F2 represents the magnet of the force on wire 2

(a) F1=3F

(b) F1=F2

(c) F1=F2/3

Option (b) is the correct answer.

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An estimate of how much energy per year is needed for 1 gigawatt is approximately 31,536,000,000,000,000 joules (J) per year.

To estimate how much energy per year is needed for 1 gigawatt, we need to consider the unit of measurement for energy, which is joules (J).

A gigawatt is equivalent to 1 billion watts or 1,000,000,000 watts. To calculate the energy per year, we need to multiply this value by the number of seconds in a year.

There are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 365 days in a year.

So, 1 gigawatt x 1 year = 1,000,000,000 watts x 60 seconds/min x 60 minutes/hour x 24 hours/day x 365 days/year

= 31,536,000,000,000,000 joules (J) per year

Therefore, approximately 31,536,000,000,000,000 joules (J) per year  is an estimate of energy needed for 1 gigawatt.

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Answer: A Nebula is left behind. A spectacular explosion in which a star ejects most of its mass in a violently expanding cloud of debris.

Hope this helps!

Answer:

A:-9.6×10-8 N

Explanation:

is correct answer

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

3800 g = 3.8 kg

We have

force = 3.8 × 4.5

We have the final answer as

Hope this helps you

The ratio of the man's kinetic energy Km to that of the woman Kw is 49.3.

Solution:

Weight of man = 680 N= \(M_{man}\)*g

\(M_{man}\) = 650/ 9.8 = 66.3 Kg

\(M_{woman}\) = 400/ 9.8 = 40 Kg

momentum of man = momentum of woman

Mm*Vm = Mw* VW

Vm/ Vw = 51/ 69.3 = 0.73  

kinetic energy of man / kinetic energy of woman = 1/2 Mm*V2m  /  1/2* Mw * V2 w

= 66.3* (0.73)2 / 51    

= 1.898

Given that kinetic energy of cardinal = k.e of ball

1/2 Mcard *V2 card = 1/2 * Mball * V2ball

Vc/ Vb = (Mball/ Mcard ) 1/2 = 0 .020        

cardinals momentum/ baseball momentum = Mc* Vc/ Mb * Vb

= 3.60*102 *0.020 / 0.146 =  49.3  

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The feature that is true of both solar and wind power is (b) Both power sources produce no greenhouse gas emissions during normal operation.

This makes them a more environmentally friendly alternative to traditional fossil fuels, which emit carbon dioxide (CO2) and other harmful gases during combustion.

However, the other options are not completely accurate. Solar and wind power can be intermittent, but this does not necessarily mean that they require a backup energy source. Energy storage technologies, such as batteries or pumped hydro storage, can be used to store excess energy generated during times of high production and release it during times of low production.

Furthermore, while solar and wind power currently supply a small fraction of global energy demand, it is important to note that their usage is increasing rapidly. In fact, renewable energy sources, including solar and wind power, are projected to be the fastest-growing energy source over the next few decades.

In conclusion, solar and wind power's most significant shared feature is their ability to operate without producing greenhouse gas emissions. While they do have other characteristics that are sometimes associated with them, these features are not always completely accurate and may not apply in every circumstance.

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The fraction of the maximum value reached by the current one minute after the switch is closed is approximately (1 - e^(-60/500)).

To answer your question, we will use the formula for the current in an RL circuit after the switch is closed:

I(t) = I_max * (1 - e^(-t/(L/R)))

Where:
- I(t) is the current at time t
- I_max is the maximum value of the current
- e is the base of the natural logarithm (approximately 2.718)
- t is the time elapsed (1 minute, or 60 seconds)
- L is the inductance (5.00 Henries)
- R is the resistance (0.0100 Ohms)

First, calculate the time constant (τ) of the circuit:

τ = L/R = 5.00 H / 0.0100 Ω = 500 s

Now, plug in the values into the formula:

I(60) = I_max * (1 - e^(-60/500))

To find the fraction of the maximum value reached by the current one minute after the switch is closed, divide I(60) by I_max:

Fraction = I(60) / I_max = (1 - e^(-60/500))

So, the fraction of the maximum value reached by the current one minute after the switch is closed is approximately (1 - e^(-60/500)).

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The tension in the cord is 44.42 N.

The tension in the cord can be calculated with the given data as follows:

T = 4(L/t²μ)

Here, T is the tension in the cord. L is the length of the cord, t is the time for one complete round-trip pulse, μ is the linear mass density of the cord, μ = m/L, where m is the mass of the cord. A pulse that moves through a medium or across the surface of a medium is known as a pulse. A transverse wave is a wave that moves perpendicular to the direction of the wave. The given data can be substituted into the above equation to find the tension.

T = 4(L/t²μ) = 4(5.28 m/(0.827 s)²(0.197 kg/5.28 m)) = 44.42 N

Tension = 44.42 N

Therefore, the tension in the cord is 44.42 N.

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Answer:

-32

Explanation:

Answer:

C 340 m

Explanation:

may i be marked brainliest?

The electric field strength at a distance of 1.20 m on the x-axis is -1.5 × 10⁴ N/C.

To find the electric field strength at a distance 1.20 m on the x-axis, we can use Coulomb's law:

\($$F=k\frac{q_1q_2}{r^2}$$\)

where F is the force between two charges, q1 and q2 are the magnitudes of the charges, r is the distance between the charges, and k is the Coulomb constant.For a single point charge q located at the origin of the x-axis, the electric field E at a distance r is given by:

\($$E=\frac{kq}{r^2}$$\)  where k is the Coulomb constant.

So, let's calculate the electric field due to each charge separately and then add them up:

For the +2.0 C charge at x = 0, the electric field at a distance of 1.20 m is:\($$E_1=\frac{kq_1}{r^2}=\frac{(9\times10^9)(2.0)}{(1.2)^2}N/C$$\)

For the -3.0 C charge at x = 0.40 m, the electric field at a distance of 1.20 m is:

\($$E_2=\frac{kq_2}{r^2}\)

\(=\frac{(9\times10^9)(-3.0)}{(1.20-0.40)^2}N/C$$\)

The negative sign indicates that the direction of the electric field is opposite to that of the positive charge at x = 0.

To find the net electric field, we add the two electric fields\(:$$E_{net}=E_1+E_2$$\)

Substituting the values of E1 and E2:

\($$E_{net}=\frac{(9\times10^9)(2.0)}{(1.2)^2}-\frac{(9\times10^9)(3.0)}{(0.8)^2}N/C$$E\)

net comes out to be -1.5×10⁴ N/C.

Therefore, the electric field strength at a distance of 1.20 m on the x-axis is -1.5 × 10⁴ N/C.

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Answer:

5

Explanation:

Answer:

Economic Development is the creation of wealth from which community benefits are realized. It is more than a jobs program, it's an investment in growing your economy and enhancing the prosperity and quality of life for all residents. Economic development means different things to different people.

Answer:

B- unicellular I believe I don't know

Answer:

B Unicellular

Explanation:

Answer:

The amount of potential energy stored in the magnetic field depends on both the strength of the magnet and the distance that another magnet or magnetic object is from it. ... All objects have a gravitational force, no matter how small, but only some objects such as iron objects can have a magnetic force.

Explanation:

The potential energy stored in the magnet/iron rod system is on the account of distance of each entities and the strength of magnets.

The given problem is based on the concept of potential energy stored in magnetic rod system.

Thus, we can conclude that the potential energy stored in the magnet/iron rod system is on the account of distance of each entities and the strength of magnets.

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He would thus weigh the same as if he were on Earth (544 N). Since the weight of the guy on Earth is the only factor, we may conclude that he also weighs the same on planet B.

Describe Earth;

Earth, the third planet from the sun, is the only place in the known cosmos where the presence of life has been established.

What is Earth composed of?

With a radius of 3,959 miles, Earth is the sixth biggest planet in our solar system. The core, mantle, and crust are the three layers that make up the earth's structure. Sandstone plus obsidian are two metallic materials that represent the majority to our humanity's outermost layer. Oceanic as well as eurasian plate are still the two kinds.

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Answer:

On Waves. Quantum mechanically, an electron can be described by a wave function oscillating in space and time that has mean values equal to the expectation values of observables corresponding to given operators. ... Electrons are fermions. They are charged particles. in short the quantum theory

i hope its helpful !

Explanation:

The relationship among u, v, and f in the context of a lens can be described by the lens formula:

1/v - 1/u = 1/f

where:

- u is the object distance (distance between the object and the optical center of the lens),

- v is the image distance (distance between the image and the optical center of the lens), and

- f is the focal length of the lens.

According to the lens formula, the reciprocal of the image distance subtracted from the reciprocal of the object distance is equal to the reciprocal of the focal length.

1. The distance traveled by the train is 1.72 m

2. The acceleration of plane is 31.25 m/s²

3. The time taken for the car to stop is 7.73 s

The distance traveled can be obtained as follow:

s = ut + ½at²

= (0 × 10) + (½ × 0.55 × 2.5²)

= 0 + (½ × 0.55 × 6.25)

= 0 + 1.72

= 1.72 m

Thus, the distance traveled is 1.72 m

The acceleration can be obtained as follow:

v² = u² + 2as

125² = 0² + (2 × a × 250)

15625 = 0 + 500a

15625 = 500a

Divide both side by 500

a = 15625 / 500

= 31.25 m/s²

Thus, the acceleration is 31.25 m/s²

The time taken can be obtained as follow:

s = (u + v)t / 2

s = ut / 2

88 = (22.78 × t) / 2

Cross multiply

22.78 × t = 88 × 2

22.78 × t = 176

Divide both sides by 22.78

t = 176 / 22.78

= 7.73 s

Thus, the time taken is 7.73 s

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The effect that distance has on the force of gravity is that increasing the distance between two objects decreases the gravitational force and is denoted as option C.

This is a term which is referred to as the universal force of attraction acting between all matter and the formula is F = Gm1m2/r² .

The force of gravity has an inverse relationship with the distance of the objects. This therefore means that increasing the distance between two objects decreases the gravitational force and vice versa which is therefore the reason why option C was chosen as the correct choice.

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The amplitude of the air vibrations caused by a sound wave with a frequency of 249 Hz and an intensity of 7.7e-06 watts/m^2 is approximately 6.23 micrometers.

The relationship between frequency, intensity, and amplitude of a sound wave can be determined using the formula for sound intensity in air,

which is given by \(I = (1/2)\rho v \omega ^2A^2,\)

where I is the sound intensity, ρ is the density of the medium (air), v is the velocity of sound in air, ω is the angular frequency (2πf), and A is the amplitude of the sound wave.

In this case, we are given the frequency (f) as 249 Hz and the intensity (I) as 7.7e-06 watts/m^2. The velocity of sound in air (v) is approximately 343 m/s.

By rearranging the formula, we can solve for the amplitude (A) as follows:

\(A^2 = (2I) / (\rho v\omega ^2)\)

First, we need to calculate the angular frequency (ω) using the given frequency (f).

ω = 2πf = 2π(249 Hz).

Next, we substitute the values into the formula and calculate the amplitude:

\(A^2 = (2 \times 7.7 e-06 ) / (1.225 \times 343 \times (2\pi (249 ))^2)\)

\(A^2 = 1.66e-09\)

Taking the square root of both sides, we find:

A ≈ 4.07e-05 meters

Since the amplitude is given in meters, we convert it to micrometers by multiplying by 10^6:

\(A =4.07e-05 meters \times 10^6 = 40.7 micrometers\)

Therefore, the amplitude of the air vibrations caused by this sound wave is approximately 40.7 micrometers or 6.23 micrometers (rounded to two decimal places).

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Vmax = 1.258 m/s

Maximum velocity of any point on the string is 1.258 m/s.

Maximum velocity is given by,

Vmax = Aω

where,

V = velocity

A = amplitude

ω = angular displacement

ω is given by,

ω = 2\(\pi\)f

where f = frequency

ω = 2\(\pi\)f

   = 2*3.147*100

   = 629.4 rad

A = amplitude = 2mm

Vmax = Aω

         = 2 ×\(10^{-3}\) × 629.4

         = 1.258 m/s

Maximum velocity = Vmax =  1.258 m/s

Maximum velocity of any point on the string is 1.258 m/s.

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Explanation:

convert 1= 30 amp

which Car has the dead

battery ?

CarA

Car B

Ams => The Current i flows into the of the Battery of Qax A.

Posithe terminal

So. By using Passinge sign Convention.

Power P₁ = Vi = 12X 30

PA = 360 Watt (the)

=>Power is Positive So Car Ahabsorbing So now we can say car A has dead battery.

Power,

Connection is maintained for t = 1 min. Energy toonsffered to the dead battery

=> we know w(t) = Work = Emergy t S. Pdt fo W (1 = imin) = 360 dt

t = 60 sec = 1 min.

36. (t), 60

360 X60

|w[t=1mm) = 21.60 *Jure.

Answer:

mass = GPE divided by gxh

Explanation:

Answer:

69.9 kg

Explanation:

w = mg

m = w/g

m = 685/9.8

m = 69.9 kg

Answer:

c

Explanation:

because what else can the laser be used for

b. the big bang theory refers to nuclear fission, where particles explode into more particles constantly and sporadically. these particles are emitted outward, expanding the universe. we call these explosions the big bang is the link between the observation that the universe is expanding and the big bang theory

The prevalent view, known as the isotropy hypothesis, contends that the cosmos is expanding not just in all directions, but also at the same rate.

The Doppler red-shift of light from distant stars and galaxies indicates that the universe is expanding (moving away from a central point). This enables Big Bang Theory, since following a "bang," all matter goes away from the place of origin.

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A golf ball striking the ground is a collision. The ground exerts an equal force on the golf ball. Both these sentences are right.

Newton's third law of motion tells us that "for every action, there is an equal and opposite reaction". This means that when two objects interact, they exert equal and opposite forces on each other.

In the case of the golf ball striking the ground, the action is the force of the golf ball hitting the ground. According to Newton's third law, the reaction to this action is an equal and opposite force exerted by the ground on the golf ball. This is why the golf ball bounces back up after hitting the ground.

The force of the golf ball on the ground and the force of the ground on the golf ball are equal and opposite in magnitude and direction.

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Answer:

a

Explanation: