A 37.0-kg child swings in a swing supported by two chains, each 3.06 m long. The tension in each chain at the lowest point is 410 N. (a) Find the child's speed at the lowest point.______m/s (b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.)_______ N(upword)

Answer:

No

Explanation:

Answer:

1.24Mev

Explanation:

Using

E= hc/lambda

= (6.62x10^-19) x(3x10^8m/s)/(1x10^-12) x 1.602x10^-9

= 1.24Mev

The net force on the balloon is zero, so it has no acceleration. So by Newton's first law, if the balloon has some velocity in a given direction, it will continue moving in that direction at a constant speed. If it's motionless, it stays motionless.

The radius of the orbit, measured from the center of Mars, should be approximately 1.04 x 10^7 meters to make the satellite take 8 times longer to complete one revolution of its orbit.

What is Orbit?

In physics, an orbit refers to the path that an object takes around another object under the influence of gravity. The object being orbited can be a planet, a star, a moon, or any other massive object. The object in orbit is constantly pulled towards the center of the object being orbited, but also has a forward velocity that keeps it moving in a curved path around the object

We can start by using the formula for the period of an orbit:

T = 2π √(r^3/GM)

where T is the period, r is the radius of the orbit, G is the gravitational constant, and M is the mass of the planet.

We can solve for r:

r = [(GMT^2)/(4π^2)]^(1/3)

We know that the satellite currently takes 9.2 hours to complete one revolution, so its current period is:

T1 = 9.2 hours = 33,120 seconds

We also know that we want the satellite to take 8 times longer to complete one revolution, so its new period will be:

T2 = 8 x T1 = 265,000 seconds

We can now plug in the given values into the equation to solve for the new radius:

r = [(G x mmars x T2^2)/(4π^2)]^(1/3)

r = [(6.67428 x 10^-11 N-m^2/kg^2) x (6.4191 x 10^23 kg) x (265,000 s)^2 / (4π^2)]^(1/3)

r ≈ 1.38 x 10^7 meters

However, we were asked for the radius measured from the center of Mars, so we need to subtract the radius of Mars to find the altitude above the surface:

altitude = r - rmars = 1.38 x 10^7 meters - 3.397 x 10^6 meters ≈ 1.04 x 10^7 meters

Therefore, the radius of the orbit, measured from the center of Mars, should be approximately 1.04 x 10^7 meters to make the satellite take 8 times longer to complete one revolution of its orbit.

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Answer:

f = 7.57 Hz

Explanation:

To find the frequency of the damping oscillator, you first use the following formula for the angular frequency:

\(\omega=\sqrt{\omega_o-(\frac{b}{2m})^2}=\sqrt{\frac{k}{m}-(\frac{b}{2m})^2}\\\\\)   (1)

k: spring constant = 2.65*10^4 N/m

m:  mass = 11.7 kg

b: damping coefficient = 4.50 Ns/m

You replace the values of k, m and b in the equation (1):

\(\omega=\sqrt{\frac{2.65*10^4N/m}{11.7kg}-(\frac{4.50Ns/m}{2(11.7kg)})^2}\\\\\omega=47.59\frac{rad}{s}\)

Finally, you calculate the frequency:

\(f=\frac{\omega}{2\pi}=\frac{47.59}{2\pi}Hz=7.57\ Hz\)

hence, the frequency of the oscillator is 7.57 Hz

Answer:

B. 10 cm

x^3 = 1 L

1 L = 1000 cm^3 (since 1 L = 1000 cm^3)

x^3 = 1000 cm^3

The uneven gamete division causes chromosomal abnormalities.

A gamete is a fully developed reproductive or sex cell with haploid chromosomes that has the capacity to mate with another haploid gamete to create a diploid zygote. The fusion (or combining) of two gametes, namely a male and a female gamete, results in the zygote. Fertilization is the process through which two gametes combine to form a zygote.

One of the gametes is typically bigger and non-motile, which is characteristic. It is sometimes referred to as an ovum or an egg cell. The second gamete cell is smaller and motile. It is also known as a sperm cell or a male gamete. In humans, each gamete has 23 chromosomes, and when they fuse, a diploid zygote with 46 chromosomes is created. These reproductive cells are created in the gonads, or reproductive organs, of the male and female animals. The male gametes in seed-bearing plants are the pollen, whereas the female gametes are housed in the plant's ovules. The gamete in plants, however, is not invariably a haploid cell.

Hence, Uneven gamete division causes the chromosomal abnormalities.

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The airplane will strike the ground at a horizontal distance of 490 meters.

To determine how far the airplane will strike on the ground, we need to consider the horizontal distance traveled by the airplane during its flight.

The horizontal distance traveled by an object can be calculated using the formula:

Distance = Speed × Time

In this case, the speed of the airplane is given as 100 meters per second and the time it takes to cover the distance of 490 meters is unknown. Let's denote the time as t.

Distance = 100 m/s × t

Now, to find the value of time, we can rearrange the equation as follows:

t = Distance / Speed

t = 490 m / 100 m/s

t = 4.9 seconds

Therefore, it takes the airplane 4.9 seconds to cover a horizontal distance of 490 meters.

Now, to calculate the distance on the ground where the airplane will strike, we can use the formula:

Distance = Speed × Time

Distance = 100 m/s × 4.9 s

Distance = 490 meters

It's important to note that this calculation assumes a constant speed and a straight flight path. In reality, various factors such as wind conditions, changes in speed, and maneuvering can affect the actual distance traveled by the airplane.

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Answer:

(A) 0.54 kg

(B) 15.5 m/s west

Explanation:

Mass is conserved.

M = m₁ + m₂

0.86 kg = 0.32 kg + m₂

m₂ = 0.54 kg

Momentum is conserved (take east to be positive).

Mv = m₁v₁ + m₂v₂

(0.86 kg)(-6 m/s) = (0.32 kg)(10 m/s) + (0.54 kg) v₂

v₂ = -15.5 m/s

Answer:

Wavelength

Explanation:

Velocity of a wave is given by

\(v=f\lambda\)

where

\(f\) = Frequency of wave = \(f=\dfrac{v}{\lambda}\)

\(\lambda\) = Wavelength of wave

We have the relation

\(f\propto \dfrac{1}{\lambda}\)

Now, velocity of the wave in a given medium remains constant. So, if the frequency increases the wavelength must decrease in order to keep the velocity of the wave constant. Also if the frequency decreases the the wavelength increases.

If a former softball player learning to play golf finds it difficult not to swing the club like a softball bat, then this individual is experiencing negative transfer (option 2).

The process of Negative Transfer may be defined as the phenomenon that occurs when the solutions to a given problem in daily life can become harder later, which is well known in psychology due to the outcomes that this situation involved in a normal context.

A well known example of negative transfer in daily life is learning a non native language in adults.

Therefore, with this data, we can see that the process of Negative Transfer is caused when a given situation becomes harder to be solved later in time, thereby changing the outcomes according to the solving period for the problem.

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The  wavelength at which the object emits the most radiation is 1.12 micrometers.

We use  Wien's displacement law in order to find the wavelength at which the object emits the maximum radiation.

The temperature of the item has an inverse relationship with the peak wavelength of the radiation it emits according to Wien's displacement law,

The formula of  Wien's displacement law,  is given as

λ_max = b/T

where λ_max =e peak wavelength of emitted radiation,

T = temperature of the object in Kelvin, and

b = Wien's displacement constant 2.898 × 10^-3 mK.

T = 2310°C + 273.15 = 2583.15 K

λ_max = (2.898 × 10^-3 mK) / 2583.15 K

λ_max = 1.12 × 10^-6 m = 1.12 μm

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Answer: Electrons move around the nucleus in fixed orbits of equal levels of energy

Explanation:

The statement that accurately represents the arrangement of electrons in Bohr’s atomic model is that the electrons move around the nucleus in fixed orbits of equal levels of energy.

It should be noted that the electrons have a fixed energy level when they travel around the nucleus in with energies which varies for different levels.

Higher energy levels are depicted by the orbits that are far from the nucleus. There's emission of light when the electrons then return back to a lower energy level.

Answer:

Explanation:

There will be loss of potential energy due to loss of height and gain of kinetic energy .

loss of height = R - R cos 14 ,    R is radius of hemisphere .

R ( 1 - cos 12 )

= 13 ( 1 - .978 )

h = .286 m

loss of potential energy

= mgh

= m x 9.8 x .286

= 2.8 m

gain of kinetic energy

1/2 m v ² = mgh

v² = 2 g h

v²  = 2 x 9.8 x 2.8

v = 7.40 m /s

Answer:

13.90 m/s

Explanation:

from the diagram in the attachment

we can find height h

 \(h=rsin14=13sin14\\=3.15 m\)

now by energy conservation at two points we can write

velocity at 14 degrees down the hemisphere

\(v=\sqrt{2g(13-3.14)} =\sqrt{2\times9.81\times9.86} \\=13.90\text{ m/s}\)

The value of the inductance, in , microhenrys of Tarik's solenoid is approximately 1.6239 microhenrys.

To calculate the inductance of a solenoid, we can use the formula:

L = (μ₀ * N² * A) / l

where L is the inductance, μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A), N is the number of turns, A is the cross-sectional area of the solenoid, and l is the length of the solenoid.

In this case, we have:

N = 175 turns

Diameter = 8.05 mm = 0.00805 m (converted to meters)

Radius = Diameter / 2 = 0.00805 m / 2 = 0.004025 m

Length (l) = 2.37 cm = 0.0237 m (converted to meters)

First, let's find the cross-sectional area (A) using the formula for the area of a circle:

A = π * r² = π * (0.004025 m)² ≈ 5.08398 × 10⁻⁵ m²

Now we can plug in the values into the formula for inductance:

L = (4π × 10⁻⁷ T·m/A * (175)² * 5.08398 × 10⁻⁵ m²) / 0.0237 m

L ≈ (1.2566 × 10⁻⁶ * 30625 * 5.08398 × 10⁻⁵) / 0.0237

L ≈ (38.5086 × 10⁻⁶) / 0.0237

L ≈ 1.6239 × 10⁻⁶ H

Now, let's convert the inductance from henrys to microhenrys:

L ≈ 1.6239 × 10⁻⁶ H * 10⁶ μH/H ≈ 1.6239 μH

So the inductance of Tarik's solenoid is approximately 1.6239 microhenrys.

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Answer:

flat lol, that's the answer

hindi po ito salawikain isa po itong pabula

Answer:

  0.56 m/s

Explanation:

The speed of the head at the end of the interval in each case is the area under the acceleration curve. Then the difference in speeds is the difference in areas.

We can find the area geometrically, using formulas for the area of a triangle and of a trapezoid.

  A = 1/2bh . . . . area of a triangle

  A = 1/2(b1 +b2)h . . . . area of a trapezoid

If h(t) is the acceleration at time t for a helmeted head, the area under that curve will be (in units of mm/s) ...

  Vh = 1/2(h(3)·3) +1/2(h(3) +h(4))·1 +1/2(h(4) +h(6))·2 +1/2(h(6))·1

  Vh = 1/2(4h(3) +3h(4) +3h(6)) = 1/2(4·40 +3·40 +3·80) = 260 . . . mm/s

If b(t) is the acceleration for a bare head, the area under that curve in the same units is ...

  Vb = 1/2(b(2)·2 +1/2(b(2) +b(4))·2 +1/2(b(4) +b(6))·2 +1/2(b(6)·1)

  Vb = 1/2(4b(2) +4b(4) +3b(6)) = 1/2(4·120 +4·140 +3·200) = 820 . . . mm/s

Then the difference in speed between the bare head and the helmeted head is ... (0.820 -0.260) m/s = 0.560 m/s

Answer:

\(f= 3.0 \times 10 {}^{8} \div 7.0 \times 10 {}^{7} \\ f = 4.28hz\)

Given

Answer:

The Rock Cycle is Earth's great recycling process where igneous, metamorphic, and sedimentary rocks can all be derived from and form one another. The rock cycle by definition is a natural process by which sedimentary, igneous, and metamorphic rocks are created, changed from one type to another, and destroyed.

The Sedimentary Rocks is the type of the oldest rocks on Earth.

Sedimentary rocks, such as sandstone, are created by the compression of sediment or particles. ... The oldest whole rocks found so far date back about 4.28 billion years. They were found in 2001 by geologists excavating near Canada's Hudson Bay in northern Quebec, andthe research appeared in the Sept.

Explanation:

LET ME KNOW IN THE COMMETS IF THIS HELPS PLZ HAVE A GREAT DAY AND CAN YOU PLZ MARK BRAINLIEST?

Answer:

The Antarctic blue whale 

Explanation:

The Antartic blue whale is the largest animal on the planet its weight is 400,000 pounds which is approxomately the weight of 33 elephnats and it can reach till 98 feet in length.

Answer:

The Blue Whale

And to be more specific THE ANTARTIC BLUE WHALE

It lives in the sea of course but if u ask which is the largest animal its the blue whale itself, and if u want the largest animal in the land its the elephant as of the present, there were dinosaurs which were bigger than the elephant but they are not of present.

Explanation:

Yes, there are differences in the shapes of position-time graphs for uniform acceleration and uniform deceleration in different directions. Let's consider each case separately:\(\hrulefill\)

(1) - Uniform acceleration towards the positive direction:

In this case, the object is moving in the positive direction with a constant acceleration. The displacement-time graph will typically be a curve that starts from an initial position and shows a steady increase in displacement over time. The shape of the graph will depend on the specific acceleration value.

(2) - Uniform acceleration towards the negative direction:

In this case, the object is moving in the negative direction with a constant acceleration. The displacement-time graph will also be a curve, but it will show a steady decrease in displacement over time.

(3) - Uniform deceleration towards the positive direction:

In this case, the object is initially moving in the positive direction but is slowing down with a constant deceleration. The displacement-time graph will be a curve that starts with a positive slope and gradually levels off.

(4) - Uniform deceleration towards the negative direction:

In this case, the object is initially moving in the negative direction but is slowing down with a constant deceleration. The displacement-time graph will be a curve that starts with a negative slope and gradually levels off.

Answer:

The value is \(\theta = 34.8 ^o\)

Explanation:

Generally the time it takes the ball to move from maximum height to the ground is

\(t = \frac{v - u}{g}\)

Here u= 0 m/s and v = 15 m/s

So

\(t = \frac{15 - 0}{9.8}\)

=> \(t = 1.53 \ s \)

Generally the maximum height traveled in time t is mathematically represented as

\(s = u * t + \frac{1}{2} * g * t^2\)

=> \(s = 0 * 1.53 + \frac{1}{2} * 9.8 * 1.53^2\)

=> \(s = 11.5 \ m \)

The interval in distance between the maximum height and the initial position of the ball is

\(d = s - k\)

Here k = 5 m (given)

\(d = 11.5 - 5\)

\(d = 6.5 \ m \)

Generally from the kinematic equation we have that

\(d = ut_1 + \frac{1}{2} g * t_1 ^2\)

Here \( t_1 \) is the time taken to travel through d

\(t_1 = \sqrt{ \frac{2 * d }{g} }\)

=> \(t_1 = \sqrt{ \frac{2 * 6.5 }{9.8} }\)

=> \(t_1 = 1.15 \ s \)

Generally the total time for this fight is mathematically represented as

\(t_f = t + t_1\)

=> \(t_f = 1.15 + 1.53\)

=> \(t_f = 2.68 \ s \)

Generally the vertical force exerted on the cube is mathematically represented as

\(F = m * g * sin (\theta )\)

=> \( m * a = m * g * sin (\theta )\)

=> \( a = g * sin (\theta )\)

Now a is mathematically represented as

\(a = \frac{v - u }{t_f}\)

=> \(a = \frac{15 - u }{2.68}\)

=> \(a = 5.597 \ m/s^2\)

So

\( 5.597 = 9.8 * sin (\theta )\)

\(\theta = sin^{-1} [\frac{5.597}{9.8} ]\)

\(\theta = 34.8 ^o\)

ANSWER

The total surface area is 192 + 96√3 m²

EXPLANATION

As you stated, the total surface area is the sum of the areas of each face of the pyramid.

96√3 is the area of the base of the pyramid, which is a regular hexagon with side length 8m:

Then we have to look for the areas of the triangular faces of the pyramid

The area of each triangle is:

To find the height we have to find the apothem of the hexagon first. Since we just found the area, we can use it to find the apothem, because the formula for the area of a regular hexagon also is:

P is the perimeter, which is 6 times the side length:

Solving for a:

Now, using the Pythagorean theorem, we can find the height of the triangular face of the pyramid, which is the hypotenuse of the triangle formed by the height of the pyramid and the apothem of the hexagon:

Therefore, the area of each triangular face is:

The total lateral surface area - i.e only the triangular faces - is:

And the total surface area of the pyramid is the sum of the lateral area and the area of the base:

Accuracy of measurement is the degree of how close the measurement is, to the actual measurement.

For a measurement of 2.00 m, 1.99 m is more accurate because it is closer to 2.00 m than 1.95 m.

The set of data is not given. So, I will give a general explanation.

For a measurement to be the accurate, the measurement must be close to the actual measurement, and in some cases, the measurement should be approximated to the actual measurement.

Given that:

\(Length =2.00m\)

An example of an accurate measurement is:

\(Length =1.95m\)

Why? The reasons are

Another example is:

\(Length = 1.99m\)

1.99 m is also an accurate measurement because of the reasons above.

However, 1.99 m is more accurate because it is closer to 2.00 m than 1.95 m

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Answer:576

Explanation:

Naturally occurring or organic substances and molecules such as cell membranes are combination structures.

Combination structures are substances which result from the combination of two or more different substances.

Natural combination structures are found everywhere in the natural world.

Examples of combination structures are organic compounds and molecules including:

Therefore, organic substances and molecules such as cell membranes are combination structures.

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