in the sun and seasons simulation in module 2, you observed that, at the equator, there are 12 hours of daylight year-round, because the angle between the apparent path of the sun across the sky and the horizon is always

Answer:

\(F = BIl\)

F » magnetic force

B » magnetic flux density

l » length / circumference

\(F = BI(2\pi r)\)

r » radius

\(F = 2 \times 5 \times (2 \times 3.14 \times 0.05) \\ { \underline{force = 3.14 \: \: newtons}}\)

The moment of inertia of the system about an axis through the center of the square, perpendicular to its plane is \($0.0636 \mathrm{~kg}-\mathrm{m}^2$\).

What is moment of inertia?

The moment of inertia, otherwise known as the mass moment of inertia, angular mass, second moment of mass, or most accurately, rotational inertia, of a rigid body is a quantity that determines the torque

Given data:

The mass of each sphere is, \($m=0.200 \mathrm{~kg}$\).

Length of side of square is, \($L=0.400 \mathrm{~m}$\).

The expression for the moment of inertia of the system about an axis through the center of the square, perpendicular to its plane is,

\($I=4 m R^2$\)

Here,

\($\mathbf{R}$\) is the distance between center of the square and the sphere. And its value is,

\($$\begin{aligned}& R=\frac{1}{2} \sqrt{L^2+L^2} \\& R=\frac{1}{2} \sqrt{0.400^2+0.400^2} \\& R=0.282 \mathrm{~m}\end{aligned}$$\)

Then, moment of inertia is,

\($$\begin{aligned}& I=4 \mathrm{~m} R^2 \\& I=4 \times 0.200 \times 0.282^2 \\& I=0.0636 \mathrm{~kg}-\mathrm{m}^2\end{aligned}$$\)

Thus, the moment of inertia of the system about an axis through the center of the square, perpendicular to its plane is \($0.0636 \mathrm{~kg}-\mathrm{m}^2$\).

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Answer:

What is C - when your front bumper is even with the front vehicles back bumper.

Explanation:

Good Luck

Answer:

Explanation:

Total time taken = 0.85 s .

Time taken by sound to travel 5.43 m + time taken by coin to fall by 5.43 m = .85

5.43 / 343 + time taken by coin to fall by 5.43 m = .85

time taken by coin to fall by 5.43 m = .85 - 5.43/343 = .834 s

Let the initial velocity of throw of coin = u

displacement of coin s  = 5.43 m

time take to fall t =  .834 s

s = ut + 1/2 gt²

5.43 = u x .834 + .5 x 9.8 x .834²

5.43 = u x .834 + 3.41

u x .834 = 2.02

u = 2.42 m /s .

Answer:

which items are matter?

battery , mobile phone

\( \Large {\underline { \sf {Required \; Solution :}}}\)

We have ―

We have been asked to calculate the acceleration of the car.

\(\qquad \implies\boxed{\red{\sf{ F = ma }}}\\\)

\( \quad \twoheadrightarrow\sf { 450 = 1300a} \\ \)

\( \quad \twoheadrightarrow\sf {\cancel{ \dfrac{450}{1300}} = 1300a} \\ \)

\(\quad\twoheadrightarrow\boxed{\red{\sf{0.346 \; ms^{-2} = a }}}\\\)

Therefore, acceleration of the car is 0.346 m/s².

Answer:

the mass of the reactants must equal the mass of product

Answer:

D is not the a vector quantities

The SI unit is a unit of measurement that is a globally recognized system that is used for technical and scientific activities.

The kilogram, which corresponds to the mass of the international prototype of the kilogram, is the SI base unit of mass.

The weight of a specific international prototype constructed of platinum-iridium and stored at the International Bureau of Weights and Measures is referred to as one kilogram.

Initially, it was specified as being equal to the mass of one litre (10-3 cubic metres) of pure water. A mass of 1 kg weighs around 2.20 pounds (lb) at the surface of the Earth.

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Answer:

The third option

Explanation:

The third option would be the best choice because while staying calm, Cloe will feel guilty and her mother will not be stressed. Staying calm also shows that Cloe's mother loves her but is disapointed, making Cloe think twice about her actions, while yelling and whipping only puts fear into her mind.

Answer:

h = 16.9 m

Explanation:

When a ball is thrown upward, its velocity gradually decreases, until it stops for a moment, when it reaches the maximum height, while its height increases. Thus, the law conservation of energy states in this case, that:

Kinetic Energy Lost by Ball = Potential Energy Gained by Ball

(0.5)m(Vf² - Vi²) = mgh

h = (0.5)(Vf² - Vi²)/g

where,

Vf = Final Speed of Ball = 0 m/s (Since, ball stops for a moment at highest point)

Vi = Initial Speed of Ball = 18.2 m/s

g = acceleration due to gravity = - 9.8 m/s² ( negative for upward motion)

h = maximum height the ball can reach = ?

Therefore, using values in the equation, we get:

h = (0.5)[(0 m/s)² - (18.2 m/s)²]/(-9.8 m/s²)

h = 16.9 m

Explanation:

the speed of sound is affected by temperature and humidity

Answer:

Explanation:

Distance = total length traveled = 3 + 1 = 4 km

Displacement² = 3² + 1² = 10

Displacement = √10 = 3.16

direction = tan⁻¹(3/-1) = 71.6⁰ north of west

Answer:

A.

Explanation:

this would make sense but it seems to be more like they both sound different

Answer:

Explanation:

We can use Hooke's law to solve this problem. Hooke's law states that the force required to extend or compress a spring by some distance x is proportional to that distance. Mathematically, this can be written as:

F = kx

where F is the force applied to the spring, x is the distance the spring is stretched or compressed, and k is the spring constant, a measure of the stiffness of the spring.

To find the spring constant, we can use the given information that a 20g weight causes an extension of 0.72cm in the spring. We can convert the weight to force using the acceleration due to gravity, g:

F = mg = (0.02 kg)(9.8 m/s^2) = 0.196 N

Now we can solve for the spring constant:

k = F/x = 0.196 N / 0.0072 m = 27.2 N/m

Finally, we can use this spring constant to find the extension caused by an 80g weight:

F = mg = (0.08 kg)(9.8 m/s^2) = 0.784 N

x = F/k = 0.784 N / 27.2 N/m = 0.0288 m

So the extension caused by an 80g weight is 0.0288 m or 2.88 cm.

Answer:

Life science is alternatively known as biology, and physical science is subdivided into branches: physics, chemistry, Earth science, and astronomy.

Explanation:

One of the vital signs a nurse checks when you visit the doctor is your heart rate, along with temperature, blood pressure and respiratory rate. Your heart rate, which is measured by your pulse, is an important indicator of your overall health and fitness level. It can signal certain medical conditions or a need to adjust lifestyle habits that elevate your heart rate above the normal range determined by your age.

Answer:

Intercellular communication refers to the communication between cells. Membrane vesicle trafficking has an important role in intercellular communications in humans and animals, e.g., in synaptic transmission, hormone secretion via vesicular exocytosis.

The displacement of the object after 1 second, is 3 m.

The displacement of the object after 3 seconds, is 9 m.

The displacement of the object after 5 seconds, is 15 m.

The displacement of an object is the change in the position of the object.

The displacement of the object after 1 second, x = 3 m/s x 1 second = 3 m

The displacement of the object after 1 second, x = 3 m/s x 3 s = 9 m

The displacement of the object after 1 second, x = 3 m/s x 5 s = 15 m

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The minimum possible coefficient of static friction between the bike tires and the ground is 0.6.

Centripetal force = m*v2/r

Centripetal force  = (m*132)/20

Normal force = mg

Normal force  = m*9.8

Let us find the minimum coefficient of static friction

The minimum coefficient of static friction = Centripetal force/Normal force

= (m*132)/(20*m*9.8) = 0.6

The minimum coefficient of static friction between the bike tires and the ground is 0.6, which is calculated by dividing the centripetal force of the cyclist by the normal force of the cyclist.

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Answer:

This problem involves the concept of a random walk, which is a mathematical model of a path consisting of a succession of random steps.

The question asks for the distance, R(n), from the center of a star after n steps of a photon, assuming a 2D random walk.

The random walk in two dimensions has a step length of A_i and the direction of the steps is uniformly distributed in [0, 2π). The change in position after each step can be written in Cartesian coordinates (Δx, Δy), where Δx = A_i cos(θ_i) and Δy = A_i sin(θ_i).

The displacement from the center after n steps is given by the vector sum of all the individual steps. This vector sum can be written in terms of its Cartesian coordinates, (X, Y), where X = Σ Δx and Y = Σ Δy. This sum over n random vectors is itself a random variable. The net displacement R(n) from the center of the star after n steps is given by the magnitude of the net displacement vector:

R(n) = √(X² + Y²)

Because each step is independent and has a random direction, the expected value of the cosine and sine for any step is zero. This means that the expected values of X and Y are both zero.

However, the mean square displacement is not zero. Because the steps are independent, the mean square displacement in each direction is additive. For a 2D random walk:

<X²> = Σ <(Δx)²> = n <(A cos θ)²> = n A²/2

<Y²> = Σ <(Δy)²> = n <(A sin θ)²> = n A²/2

Because <X²> = <Y²>, we can write:

<R²> = <X²> + <Y²> = n A²

So, the root mean square distance (the square root of the mean square displacement) after n steps is:

R(n) = √(<R²>) = √(n) * A

Therefore, the distance R(n) that the photon is expected to be from the center of the star after n steps grows as the square root of the number of steps, with each step having a length A. Please note that this result holds for a 2D random walk. A real photon in a star would be performing a 3D random walk, which would have slightly different characteristics.

Answer ) Sound level equation

The intensity of a sound wave is related to its amplitude squared by the following relationship: I=(Δp)22ρvw I = ( Δ p ) 2 2 ρ v w . Here Δp is the pressure variation or pressure amplitude (half the difference between the maximum and minimum pressure in the sound wave) in units of pascals (Pa) or N/m2.

The correct answer is B. No, because she is not working on the atomic structures of a solid

Explanation:

Solid-state physics is a sub-discipline of physics that focuses on studying solids, this includes analyzing solids structures, features, and other phenomena that occur in substances in this state of the matter. This means a solid-state physics will not study or gases.

In this context, the fact the scientist is trying to create an electromagnetic field by using solutions and the flow of these show the scientists is not working with solids but with liquids or gases as solids do not flow. Also, her focus is not solids, and therefore she is not a solid-state physicist. Thus, it can be concluded she is not a solid-state physicists because she is not working on the structures of solids.

Acceleration is defined as the change in velocity per unit time. Its unit is m/s².

Distance is the amount of space, or the actual length of the path travelled.

Displacement is the difference between the initial and final positions of the object.

Speed is the rate at which an object covers a certain distance.

Velocity is defined as the speed with a direction.

An object is said to have a positive velocity, if it is moving in the positive direction. And an object moving in negative direction has a negative velocity.

Acceleration is the change in velocity per unit time.

For freely falling objects, gravity is the only thing acting on the object.

The acceleration due to gravity on the earth is 9.8 m/s².

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"Kinetic" energy is the energy of motion.

The ball in the glove is not moving. It's just laying there. (B)

So it has no kinetic energy.

All the other choices describe something moving, so they all have some.

ANSWER

C. The rate of heat transfer for both walls is the same

EXPLANATION

The rate of heat transfer for a material is given by:

where k = thermal conductivity

A = surface area of the material

ΔT = change in temperature

d = thickness of the material

Wall A has 4 timesthe area of Wall B and is also twice as thicjk as wall B. This implies that:

We also have that the thermal conductivity of Wall A is half that of Wall B:

Therefore, the rate of heat trnsfer for Wall ABis:

and for Wall A is:

Note: ΔT is the same for both walls

Hence, we see that the rate ofheat rtransfer for both walls is the same.

The correct option is option C.

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:

a.

Explanation:

draw it that way velocity draw

hope it's helpful

Answer:

weight, acceleration

Explanation:

weight = mass x gravity(meaning the direction of the mass)

acceleration = v-u/t

v-u is the change in velocity