Need to fill in the blank

Answer:

A physical change involves a change in physical properties. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

Explanation:

To calculate the torque required to create an angular acceleration, we can use the formula:

Torque = Moment of Inertia × Angular Acceleration

The moment of inertia of a disk can be calculated using the formula:

Moment of Inertia = (1/2) × Mass × Radius^2

Given:

Mass = 15,000 kg

Radius = 6.14 m

Angular Acceleration = 0.0500 rad/s^2

First, calculate the moment of inertia:

Moment of Inertia = (1/2) × Mass × Radius^2

Moment of Inertia = (1/2) × 15,000 kg × (6.14 m)^2

Next, calculate the torque:

Torque = Moment of Inertia × Angular Acceleration

Torque = Moment of Inertia × 0.0500 rad/s^2

Now, let's plug in the values and calculate:

Moment of Inertia = (1/2) × 15,000 kg × (6.14 m)^2

Moment of Inertia ≈ 283,594.13 kg·m^2

Torque = 283,594.13 kg·m^2 × 0.0500 rad/s^2

Torque ≈ 14,179.71 N·m

Rounding to three significant figures, the torque required to create an angular acceleration of 0.0500 rad/s^2 is approximately 14,180 N·m.

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The electron configuration of an element with atomic number 15 is 3s² 3p⁵.

The electron configuration of an element with atomic number 15 (which corresponds to the element phosphorus) can be determined by following the Aufbau principle and the Pauli exclusion principle. The Aufbau principle states that electrons occupy the lowest energy levels available, while the Pauli exclusion principle states that each orbital can hold at most two electrons with opposite spins.

Starting with the first energy level, we fill in the electrons for each subsequent energy level until we reach the 15 electrons of phosphorus: 1s² 2s² 2p⁶ 3s² 3p⁵

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The hiker travelled 4.02 km North/South and 4.74 km East/West during her hike.

This question involves vector addition, the resolution of vectors, the use of bearings, and trigonometry in the calculation of the hiker's movement.

This may appear to be a difficult problem, but with some visual aid and the proper use of mathematical formulas, the issue can be addressed correctly.

Resolution of VectorThe resolution of a vector is the process of dividing it into two or more components.

The angle between the resultant and the given vector is equal to the inverse tangent of the two rectangular components.

Angles will always be expressed in degrees in the solution.

The sine, cosine, and tangent functions in trigonometry are denoted by sin, cos, and tan.

The tangent function can be calculated using the sine and cosine functions as tan x = sin x/cos x. Also, in right-angled triangles, Pythagoras’ theorem is used to find the hypotenuse or one of the legs.

Distance Travelled North/SouthThe hiker traveled North for the first part of the hike and South for the second.

The angles that the hiker traveled in the first part and second parts are 53 degrees and 17 degrees, respectively.

The angle between the two is (180 - 53 - 17) = 110 degrees.

The angle between the resultant and the Northern direction is 110 - 53 = 57 degrees.

Using sine and cosine, we can calculate the north/south distance traveled to be 5 sin 57 = 4.02 km, and the east/west distance to be 5 cos 57 = 2.93 km.

Distance Travelled East/WestThe hiker walked East for the second part of the hike.

To calculate the distance travelled East/West, we must first calculate the component of the first part that was East/West.

The angle between the vector and the Eastern direction is 90 - 53 = 37 degrees.

Using sine and cosine, we can calculate that the distance travelled East/West for the first part of the hike is 5 cos 37 = 3.88 km.

To determine the net distance travelled East/West, we must combine this component with the distance travelled East/West in the second part of the hike.

The angle between the second vector and the Eastern direction is 17 degrees.

Using sine and cosine, we can calculate the distance traveled East/West to be 3 sin 17 = 0.86 km.

The net distance traveled East/West is 3.88 + 0.86 = 4.74 km.

Therefore, the hiker travelled 4.02 km North/South and 4.74 km East/West during her hike.

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Answer:

Which feature is created when a block of rock dropped down in relation to the block of rock beside it?

Explanation:

Grabens drop down relative to adjacent blocks and create valleys. Horsts rise up relative to adjacent down-dropped blocks and become areas of higher topography.

Answer:

Below

Explanation:

weight = mass * g  <==g is less on the moon, so your weight is less on the                      moon

         to calculate weight, you have to use the g of the planet you are on

The MASS does not change....it will be 6kg on the moon or earth

Weight of 30 kg on earth =    30 * g = 30 * 9.81 = 294 N

three charged particals are located at the corners of an equil triangle shown in the figure showing let (q 2.20 Uc) and L 0.650

We have that the the maximum height and  magnitude and the direction of the velocity  is mathematically given as

a)V=5.42m/s

b)

From the question we are told

Problem 2 More Basketballs Use these values of initial position and initial velocity in the following questions.

Initial position: ___1.0___ m above ground

Initial velocity: ___6.3 __ m/s, up

a)Generally the equation for Motion   is mathematically given as

\(S=ut+\frac{1}{2}at^2\\\\Therefore\\\\-1.5=0+0.5+\frac{1}{2}*9.8t^2\\\\t=0.55sec\\\\Therefore\\\\V^2=u^2+2as\\\\V^2=0^2+2*-9.8*(-1.5)\)

b)

Since whilst in air the gravitational force can only act on it

therefore

Acting in downward direction

its specs are

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Answer:

Refraction is another way that waves interact with matter. ... Waves bend as they enter a new medium because they start traveling at a different speed in the new medium. For example, light travels more slowly in water than in air. This causes it to refract when it passes from air to water or from water to air.

Explanation:

i hope this helps but if it doesnt im rlly srry :p

Answer:

A) -40° C and -40° F

B) 574.25° K and 574.25° F

Explanation:

see attachment for calculation and explanation

The difference between an atom's mass number (A) and atomic number (Z) is equal to the number of neutrons.

1) H – Hydrogen - 1 proton, 1 electron, 0 neutrons

2) He – Helium - 2 protons, 2 electrons, 2 neutrons

3) Li – Lithium - 3 protons, 3 electrons, 4 neutrons

4) Be – Beryllium - 4 protons, 4 electrons, 5 neutrons

5) B – Boron - 5 protons, 5 electrons, 6 neutrons

6) C – Carbon - 6 protons, 6 electrons, 6 neutrons

7) N – Nitrogen - 7 protons, 7 electrons, 8 neutrons

8) O – Oxygen - 8 protons, 8 electrons, 8 neutrons

9) F – Fluorine - 9 protons, 9 electrons, 10 neutrons

10)Ne – Neon - 10 protons, 10 electrons, 10 neutrons

11) Na – Sodium - 11 protons, 11 electrons, 12 neutrons

12) Mg – Magnesium - 12 protons, 12 electrons, 12 neutrons

13) Al – Aluminium - 13 protons, 13 electrons, 14 neutrons

14) Si – Silicon - 14 protons, 14 electrons, 14 neutrons

15) P – Phosphorus - 15 protons, 15 electrons, 17 neutrons

16) S – Sulphur - 16 protons, 16 electrons, 16 neutrons

17) Cl – Chlorine - 17 protons, 17 electrons, 18 neutrons

18) Ar – Argon - 18 protons, 18 electrons, 22 neutrons

19) K – Potassium - 19 protons, 19 electrons, 20 neutrons

20) Ca – Calcium - 20 protons, 20 electrons, 28 neutrons

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Answer:

 y = y₀ (1 - ½ g y₀ / v²)

Explanation:

This is a free fall problem. Let's start with the ball that is released from the window, with initial velocity vo = 0 and a height of the window i

          y = y₀ + v₀ t - ½ g t²

          y = y₀ - ½ g t²

for the ball thrown from the ground with initial velocity v₀₂ = v

         y₂ = y₀₂ + v₀₂ t - ½ g t²

in this case y₀ = 0

         y₂2 = v t - ½ g t²

at the point where the two balls meet, they have the same height

         y = y₂

         y₀ - ½ g t² = vt - ½ g t²

         y₀i = v t

         t = y₀ / v

since we have the time it takes to reach the point, we can substitute in either of the two equations to find the height

         y = y₀ - ½ g t²

         y = y₀ - ½ g (y₀ / v)²

         y = y₀ - ½ g y₀² / v²

        y = y₀ (1 - ½ g y₀ / v²)

with this expression we can find the meeting point of the two balls

Answer:

The answer is 6.

90 - (3+9) • 7

90 - (12) • 7

90 - 12 • 7

90 - 84

6

Answer:

Explanation:

a ) distance s = 12 m .

constant speed = 1.5 m/s

time taken to coast 12 m

= distance / speed

= 12 / 1.5 = 8 s

b ) initial velocity u = 2.5 m /s

final velocity v = 1.5 m /s

displacement s = 14 m

acceleration a = ?

v² = u² + 2 as

1.5² = 2.5² + 2 a x 14

a = - .1428 m /s²

= - 14.28 cm / s²

c )

v = ?

u = 2.5 m /s

s = 6 m

a = -   .1428 m /s²

v² = u² - 2 as

= 2.5² - 2 x 6 x .1428

= 6.25 - 1.71

= 4.54

v = 2.13 m /s .

The velocity of the bullet and block moving together after the collision is approximately 1.18 m/s.

We can use the principle of conservation of momentum to find the velocity of the bullet and block moving together after the collision. The principle of conservation of momentum states that the total momentum of a closed system is conserved before and after the collision, as long as there are no external forces acting on the system. In this case, the bullet and the block form a closed system, and we can assume that there are no external forces acting on them during the collision.

Before the contact, the bullet's momentum is:

p1 = m1 x v1 = 2 kg x 60 m/s = 120 kg m/s

where m1 is the mass of the bullet and v1 is its velocity before the collision.

The momentum of the block before the collision is:

p2 = m2 x v2 = 100 kg x 0 m/s = 0 kg m/s

where m2 is the mass of the block and v2 is its velocity before the collision.

Before the impact, the system's entire momentum is:

p = p1 + p2 = 120 kg m/s + 0 kg m/s = 120 kg m/s

Following the contact, the bullet and block move at the same speed, v. After the collision, the system has the following mass:

m = m1 + m2 = 2 kg + 100 kg = 102 kg

Following the collision, the system's overall momentum is:

p' = m x v

The total momentum prior to and following the impact is the same, in accordance with the conservation of momentum concept. As a result, we may set p = p' and find v:

p = p'

=> 120 kg m/s = 102 kg x v

=> v = 120 kg m/s / 102 kg

=> v ≈ 1.18 m/s

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Answer:

–50.96

Explanation:

The following data were obtained from the question:

Initial velocity (Vᵢ) = 0 m/s

Acceleration (a) = – 9.8 m/s²

Time (t) = 5.2 s

Final velocity (Vբ) =.?

Acceleration is simply defined as the change of velocity with time. Mathematically, it is expressed as:

Acceleration (a) = Final velocity (Vբ) – Initial velocity (Vᵢ) /Time (t) =

a = (Vբ – Vᵢ) / t

With the above formula, we can determine how fast the object is traveling after 5 s as follow:

Initial velocity (Vᵢ) = 0 m/s

Acceleration (a) = – 9.8 m/s²

Time (t) = 5.2 s

Final velocity (Vբ) =.?

a = (Vբ – Vᵢ) / t

– 9.8 = (Vբ – 0) / 5.2

– 9.8 = Vբ / 5.2

Cross multiply

Vբ = –9.8 × 5.2

Vբ = –50.96 m/s

Therefore, the object is traveling at

–50.96 m/s

Answer:

39.81 N

Explanation:

I attached an image of the free body diagrams I drew of crate #1 and #2.  

Using these diagram, we can set up a system of equations for the sum of forces in the x and y direction.

∑Fₓ = maₓ

∑Fᵧ = maᵧ

Let's start with the free body diagram for crate #2. Let's set the positive direction on top and the negative direction on the bottom. We can see that the forces acting on crate #2 are in the y-direction, so let's use Newton's 2nd Law to write this equation:

Note that the tension and acceleration are constant throughout the system since the string has a negligible mass. Therefore, we don't really need to write the subscripts under T and a, but I am doing so just so there is no confusion.

Let's solve for T in the equation...

We'll come back to this equation later. Now let's go to the free body diagram for crate #1.

We want to solve for the forces in the x-direction now. Let's set the leftwards direction to be positive and the rightwards direction to be negative.

The normal force is equal to the x-component of the force of gravity.

Now let's go back to this equation:

We have 3 known variables and we can solve for the tension force.

The tension force is the same throughout the string, therefore, the tension in the string connecting M2 and M3 is 39.81 N.

Answer:

Disease are caused by micro organisms

All objects in the universe are attracted to one another

species evolved through natural selection

The scientific facts from the given list are,

Microorganisms that are too tiny to be seen with the bare eye are the primary cause of many illnesses.

The force of gravity draws all objects in the cosmos toward one another.

Natural selection is the process through which species change.

Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds.

Microorganisms that are too tiny to be seen with the bare eye are the primary cause of many illnesses.

The force of gravity draws all objects in the cosmos toward one another.

Natural selection is the process through which species change.

Therefore options A, B, and C are scientific facts.

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The root-mean-square speed of an oxygen molecule at a pressure of 3.9 x 10^4 Pa and a density of 1.3 kg/m^3 is approximately 6.13 x 10^-9 m/s.

The root-mean-square (rms) speed of an oxygen molecule can be calculated using the ideal gas law and the definition of density.

The ideal gas law states:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

Rearranging the ideal gas law to solve for the rms speed (v) gives:

v = sqrt(3 * P / (density * N))

where P is the pressure, density is the density of the gas, and N is Avogadro's number (6.022 x 10^23 molecules/mol).

Given:

Pressure (P) = 3.9 x 10^4 Pa

Density = 1.3 kg/m^3

We can substitute these values into the formula to calculate the rms speed of an oxygen molecule.

v = sqrt(3 * (3.9 x 10^4) / (1.3 * (6.022 x 10^23)))

v = sqrt(3.77 x 10^-18 m^2/s^2)

v ≈ 6.13 x 10^-9 m/s

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Answer:

The pressure exerted by camel feet is 2000 N/m².

Step-by-step explanation:

Here, we have given that ;

We need to find the pressure exerted by camel feet.

As we know that :

\({\longrightarrow{\pmb{\sf{Pressure= \dfrac{Area}{Force}}}}}\)

Substituting all the given values in the formula to find the pressure exerted by camel feet.

\( \begin{gathered} \begin{array}{l} {\longrightarrow{\sf{Pressure= \dfrac{Area}{Force}}}} \\ \\ {\longrightarrow{\sf{Pressure= \dfrac{4000}{2}}}} \\ \\ {\longrightarrow{\sf{Pressure= \cancel{\dfrac{4000}{2}}}}} \\ \\ {\longrightarrow{\sf{Pressure= 2000 \: N/{m}^{2}}}} \\ \\\star \: \small\underline{\boxed{\sf{\purple{Pressure= 2000 \: N/{m}^{2}}}}} \end{array}\end{gathered}\)

Hence, the pressure exerted by camel feet is 2000 N/m².

\(\rule{300}{2.5}\)

Answer:

The parent cell

Explanation:

Answer

Mitosis phase - The DNA in the parent cell nucleus makes a copy of itself and is then split between the two daughter cells during mitosis

Explanation

This is biology, not really physics.

Answer:

v=u+gt , initially u=0 and g acting in the direction of movement of body.

v=0+9.8×2

v=19.6m/s

Explanation:

sorry i dont have exact answer but hope this above equation will help you ....♡

Answer:

48.51ms / 174.6 km/h

Explanation:

y = 1/2 x g x t^2         v = g x t          

when y = 120m

120 = 1/2 x 9.8 x t^2

t^2 = 24.49

t = 4.95s

when t = 4.95s

v = 9.8 x 4.95

v = 48.51 m/s = 174.6 km/h

I'd say its realistic. But I don't really know that sry

Answer:

Based on the information provided, the lightbulb lights when the loop rotates because the movement of the wire in an electric or magnetic field causes electrons in the wire to move and become either mechanical energy or an electric current. This energy causes the light to glow. The energy change involved is the conversion of electrical or mechanical energy used to rotate the loop into either light or electrical energy

Explanation:

The setup time of a clocked flip-flop is:

The minimum amount of time that an output must remain stable before an active clock transition.

A flip-flop is a device that can hold a single bit of data (a binary digit); one of its two states corresponds to a "one," and the other to a "zero." Such data storage can be used to store state, and in electronics, such a circuit is known as sequential logic.

The output state changes of a timed flip-flop can be synced to a clock pulse thanks to an additional input.

Data must be at a valid logic level at setup time (tS), which is defined as the time before the DAC clock shift.

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All four planets contain stable atmospheric layers, a mantle, and a core. One of the following is FALSE regarding the four terrestrial planets (Earth, Mars, Mercury, and Venus).

Terrestrial planets include Mercury, Venus, Earth, and Mars because of their compact, stony surfaces that resemble terra firma on Earth. The four innermost planets in the solar system are the four terrestrial planets.

The four innermost planets are known to as terrestrial planets and feature a moon or moons, valleys, volcanoes, and craters. They also have a liquid heavy-metal core.

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Answer:

50 N-m

Explanation:

5 N-m x 10 N-m = 50 N-m

Answer:

50 n-m

Explanation:

The mass of the proton at the given speed is 2.78 x 10⁻²⁷ kg.

The mass of the proton at the given speed of is calculated by applying the following equation.

Mathematically, the equation relating the mass of the proton and the rest mass is calculated as follows;

m = ( M₀ ) / (√ ( 1 - v² / c² )

where;

The given parameters include;

The mass of the proton at the given speed is calculated as follows;

m = ( M₀ ) / (√ ( 1 - v² / c² )

m = ( M₀ ) / (√ ( 1 - (0.8c)² / c² )

m = M₀ / 0.6

m =  1.67 x 10⁻²⁷ kg / 0.6

m = 2.78 x 10⁻²⁷ kg

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