6. An ice skater is spinning at 60 RPM when she pulls in her arms and undergoes an angular acceleration of 10 rad/s"" for 0. 6 seconds. What was her final RPM and how many rotations did she spin during this time?

The odd feature about Mathilde is that it had a different shape. It has all the features like Ida, Eros, and Gaspra. Thus, option D is correct.

Mathilde is a type of metal body present in the asteroid belt having an irregular shape. It is different from other asteroids because of its highly elongated and heavily cratered structure in space. It is estimated that the diameter of the Mathilde is around 50 kilometers.

Mathilde does not have any defined shape and the color is also very distinct. Due to its high carbon nature, it looks like dark black color. This type of asteroid is more prone to collisions.

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67.08 pounds per square inch is the amount of pressure exerted on the ground by the person standing on one foot with a wide and long foot.

To calculate the pressure exerted on the ground due to the weight of a person standing on one foot, we need to consider the person's weight and the surface area of their foot in contact with the ground. The formula for pressure is force divided by area (P = F/A).

Let's assume the person weighs 150 pounds and their foot is 12 inches long and 6 inches wide, giving us a surface area of 72 square inches. To convert pounds to force, we multiply the weight by the acceleration due to gravity, which is 32.2 feet per second squared.

So the force exerted by the person is 150 x 32.2 = 4,830 pounds.

Now we can calculate the pressure by dividing the force by the surface area:

P = 4,830 / 72 = 67.08 pounds per square inch.

Therefore, the pressure exerted on the ground by the person standing on one foot is 67.08 pounds per square inch

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Answer:

 F = 99 v₂₀

v₂₀ = 1 m / s,        F = 99 N

Explanation:

In this exercise it is asked to find the force during the collision, for this we use the relationship between the momentum and the momentum of car 1

            I = Δp

            F t = p_f- p₀

            F t = m (v_f -v₀)                        (1)

We must find the final speed of car 1, for this we define a system formed by the two cars, in this case the forces during the collision are internal and the moment is conserved

initial instant. Before the crash

        p₀ = 0 + m₂ v₂₀

final instant. After the crash

        p_f = m₁ v₁ + m₂ v_{2f}

the moment is preserved

        p₀ = p_f

        m₂ v₂₀ = m₁ v_{1f} + m₂ v_{2f}           (2)

        m₂ (v₂₀ - v_2f}) = m₁ v_{1f}

as the collision is elastic the kinetic energy is also conserved

        K₀ = K_f

        ½ m₂ v₂₀² = ½ m₁ v_{1f}² + ½ m₂ v_{2f}²

        m₂ (v₂₀² -v_{2f}²) = m₁ v_{1f}²

let's write our system of equations, using

         a² - b² = (a + b) (a-b)

         m₂ (v₂₀ - v_{2f}) = m₁ v_{1f}

         m₂ (v₂₀ -v_{2f}) (v₂₀ + v_{2f}) = m₁ v_{1f}²

to solve we divide the equations

       v₂₀ + v_{2f} = v_{1f}

with this we substitute in equation 2 and find the speed of each car, in this case we need the speed of car 1

         m₂ v₂₀ = m₁ v_{1f} + m₂ (v_{1f}-v₂₀)

         2m₂ v₂₀ = (m₁ + m₂) v_{1f}

          v_{1f} = \(\frac{2m_2}{m_1+m_2} v_{2o}\)

We substitute in the drive ratio of car 1

            F t = m (v_f -v₀)

            F = m₁ (\frac{2m_2}{m_1+m_2}  v_{2o} - 0) / t

            F = \(\frac{2m_1 m_2 }{m_1+m_2} \ \frac{v_{2o}}{t}\)

the mass of each car is the mass of the car plus the mass of the boy

           m₁ = 50 +40 = 90 kg

           m₂ = 50 +60 = 110 kg

time is t = 1

we substitute the values

           F = \(\frac{ 2\ 90 \ 110}{90+110} \ \frac{v_{2o}}{1}\)2 90 100/90 + 110 vo2 / 1

           F = 99 v₂₀

The value of the initial velocity of car 2 is not indicated in the problem, if this velocity is known it can be included and the force value is obtained, suppose that the initial velocity v₂₀ = 1 m / s

           F = 99 N

B. It represented African Americans and their struggle for equality.Answer:

Explanation:

Answer:

296.01 J

Explanation:

From the question,

Q = cm(t₂-t₁)....................... Equation 1

Where Q = quantity of heat, c = specific heat capacity of aluminium, m = mass of aluminium, t₁ = Initial temperature, t₂ = Final temperature

Given: c = 897 J/kg.K, m = 0.01 kg, t₁ = 22 K, t₂ = 55 k

Substitute these values into equation 1

Q = 897×0.01×(55-22)

Q = 897×0.01×33

Q = 296.01 J

Hence 296.01 Joules of heat is required.

the answer is amplitude

Answer:

B because thats the answer

Answer:

\(28.53\ \text{m}\)

\(4.48\ \text{s}\)

\(72.1\ \text{m}\)

Explanation:

\(y_0\) = Height from where the ball is thrown = \(70\ \text{m}\)

\(\theta\) = Angle of inclination = \(45^{\circ}\)

\(u\) = Initial velocity = \(9\ \text{m/s}\)

\(g\) = Acceleration due to gravity = \(9.8\ \text{m/s}^2\)

Range of projectile is given by

\(R=\dfrac{u\cos \theta }{g}\left(u\sin \theta +{\sqrt{u^{2}\sin ^{2}\theta +2gy_{0}}}\right)\\\Rightarrow R=\dfrac{9\cos45^{\circ}}{9.8}\left(9\sin45^{\circ}+\sqrt{9^2\left(\sin45^{\circ}\right)^2+2\times 9.8\times 70}\right)\\\Rightarrow R=28.53\ \text{m}\)

The ball will land \(28.53\ \text{m}\) away.

Time of flight is given by

\(t=\dfrac{u\sin \theta +{\sqrt{(u\sin \theta )^{2}+2gy_{0}}}}{g}\\\Rightarrow t=\dfrac{9\sin 45^{\circ} +{\sqrt{(9\sin 45^{\circ} )^{2}+2\times 9.8\times 70}}}{9.8}\\\Rightarrow t=4.48\ \text{s}\)

The time the ball will stay in the air is \(4.48\ \text{s}\)

Maximum height is given by

\(h=y_0+\dfrac{u^2\sin^2\theta}{2g}\\\Rightarrow h=70+\dfrac{9^2\times \sin^245^{\circ}}{2\times 9.8}\\\Rightarrow h=72.1\ \text{m}\)

Maximum height the object will reach above the ground is \(72.1\ \text{m}\).

Since the powerful gravitational pull of the Sun, all of the the solar system's planets revolve around it. The Sun basically attracts the solar system's planets, encompassing Earth, as well as allows them to be in orbit.

Kepler's laws of planetary motion was initially published at 1609 and 1619 by Johannes Kepler which implies the description of the main orbits of planets around the Sun.

They explain the following scenarios:

Thus, this way, the orbits of the planets around the sun work.

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The critical speed below which the rope would become slack when the bucket reaches the highest point in the circle is determined by the length of the rope and the radius of the circle.

When the bucket is at the highest point in the circle, it is momentarily at rest and the tension in the rope must be zero.

The formula for calculating the critical speed at which the rope becomes slack is:

v = √(gr)

where v is the critical speed, g is the acceleration due to gravity, and r is the radius of the circle.

For example, if the radius of the circle is 2 meters and the acceleration due to gravity is 9.8 m/s², the critical speed would be:

v = √(9.8 × 2) = 4.4 m/s

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Answer: Yes. you can search this question on the website quora

Explanation:

To determine the number of hours a television can run on the energy provided by 1.0 gallon of gasoline, we need to convert the energy content of gasoline into kilojoules (kJ). The energy content of gasoline is approximately 31,536 kJ per gallon.

Now, we divide the energy content of gasoline (31,536 kJ) by the energy required by the television per hour (150 kJ/h). This calculation gives us approximately 210.24 hours. A television requiring 150 kJ/h can run for approximately 210.24 hours on the energy provided by 1.0 gallon of gasoline, which has an energy content of approximately 31,536 kJ per gallon.

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The slope of position versus time graph represent the velocity.

position vs. time graph attached below.

In a position-time graph, the velocity of the moving object is represented by the slope of the graph line.

So, the position vs. time graph for a person walking at a  constant speed of 1 m/s for 10 seconds will be a straight line having slope of 1 in the interval of 0 to 10 seconds.

Similarly,  the position vs. time graph for a person walking at a  constant speed of 4 m/s for 10 seconds will be a straight line having slope of 4 in the interval of 0 to 10 seconds.

Graph attached below.

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With eyepiece b, the magnification is 100.

Simply dividing the focal length of the telescope by the focal length of the eyepiece yields the magnification. This implies that a higher magnification is provided by a smaller number on an eyepiece. The magnification offered by a 10mm eyepiece would be twice that of a 20mm eyepiece.

The ratio of the image's height to the object's height is represented by the formula for magnification. Additionally, the letter "m" stands for the object's magnification. Additionally, its formula is Magnification (m) is equal to h/h. Here, h is the object's height and h' is its the item's height.

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Answer:

the autumnal equinox (when day and night are of equal length)

Explanation:

The first event occurs around the 22nd or 23rd in the month of September. What usually happens is that regions around the Northern Hemisphere (which includes all of North America and Europe) experience an equal length of day and night.

While the second event occurs around March 20th or 21st mainly observable in countries found in the Southern Hemisphere.

Answer:

to find the slope you need to find the change in distance then you divide by the corresponding change in time

eg

( 4-2) ÷ (2-1)

= 2m/s

Answer:

four covalent bonds is the answer

Answer:

Matter, atoms, elements.

Explanation:

Matter is just a name for anything that has mass and takes up space. Therefore, atoms are larger than matter. Atoms are the smallest bits of an element that are still that element, so, elements would be bigger than the atoms that come together to create them!

Hope this helps!

Answer:

An electromagnet is made by forming a coil around a soft iron bar (known here as the metal) such as a nail or  screw and connect with an insulated copper wire (known here as the electric current conductor) the ends of the wound copper is then connected separately to the positive and negative terminals of a battery (known here as the source of electric current)

The north seeking needle of the magnetic compass will move away when brought close to the north pole of the formed electromagnet which can then be labelled N

The magnetic compass needle will be attracted to the south pole of the electromagnet which can then be labelled S

Explanation:

An electromagnet is an electric powered magnet that is formed (temporarily) by the perpendicular movement of electric current with respect to a metal core

The magnitude and the poles of an electromagnet can be changed by changing the magnitude and the direction of flow of the electric current respectively.

Answer:

So a diameter is the same as two opposing radii. The formula for the area of a circle is A = π r2, where r is the length of the radius of a circle. We can use our knowledge that a diameter is made up of two radii to understand that r = d/2.

Explanation:

I suggest that the students move forward with option A.

Test funnels of the same size and material with varying sized openings. This will allow them to determine the optimal size for the opening that will help direct the marble to the launch pad. Once they have determined the optimal size, they can move forward with constructing the funnel with that size opening.

Transverse waves cannot be formed in liquids or gases because they lack the ability to bend their shape. Transverse waves include, for instance, light waves.

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Answer:

pls I don't understand it

Explanation:

can you follow me pleaee??

Answer:

α=atr

the relationship between linear accelaration and linear accelaration is proportional. The greater the angular acceleration is, the larger the linear (tangential) acceleration.

Answer:

charge of the atom =  -1

charge of the nucleus = 4

Answer:

Physical science

Explanation:

Answer:

its the cheese

Explanation: