The resulting net force of an object is represented below. →10 N Which most likely represent the forces acting on the object? ↑ 63 N and ↓ 73 N ↑ 97 N and ↓ 87 N ← 63 N and → 73 N ← 97 N and → 87 N.

(a) The angular velocity of the system after the collision is 1.61 rad/s.

(b) The kinetic energy before collision is 19.31 J and the kinetic energy after collision is 1.45 J.

The angular velocity of the system is determined by applying the principle of conservation of angular momentum.

Li = Lf

P x r = Ifωf

mv x r = Ifωf

[tex]\omega _f = \frac{mvr}{I_f} \\\\\omega _f = \frac{mvr}{\frac{1}{3}Mr^2 + mr^2 } \\\\\omega _f = \frac{mvr}{r^2(\frac{1}{3}M + m )}\\\\\omega _f = \frac{mv}{r(\frac{1}{3}M + m )}\\\\\omega _f = \frac{0.055 \times 26.5}{1.2(\frac{2.1}{3} \+ \ 0.055)} \\\\\omega_f = 1.61 \ rad/s[/tex]

Kinetic energy before the collision is calculated as follows;

[tex]K.E_i = K.E_{ball} + K.E _{rod}\\\\K.E_i = K.E_{ball} + 0\\\\K.E_i = \frac{1}{2} \times m \times v^2\\\\K.E_i = \frac{1}{2} \times 0.055 \times 26.5^2\\\\K.E_i = 19.31 \ J[/tex]

The kinetic energy after the collision is calculated as follows;

[tex]K.E_f =\frac{1}{2} I_f \omega_ f^2\\\\K.E_f = \frac{1}{2} (\frac{1}{3}Mr^2 + mr^2)\omega _f^2\\\\K.E_f =\frac{1}{2} [\frac{1}{3}(2.1)(1.2)^2 + (0.055)(1.2)^2]\times (1.61)^2\\\\K.E_f = \frac{1}{2} (1.008 + 0.114) \times (1.61)^2\\\\K.E_f = 1.45 \ J[/tex]

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Answer:

4.6 billion years

Explanation:

Option D, 1.95 cm

1.8+2.1=3.9/2 = 1.95

The mystery element on the periodic table that have melting point of 725.05c , that is malleable, good conductor of heat is Barium.

Periodic table is the table that shows the classification of elements into groups and periods which classify them base on their unique and comon characteristics within each group.

Therefore, The mystery element on the periodic table that have melting point of 725.05c , that is malleable, good conductor of heat is Barium.

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Answer: around 65.

Explanation:

You are given a diameter of 10 cm (this is x value). find what y value is equal to at those 10 cm. You’ll see that it’s aroun 65

Answer: stationary front

Explanation:

Answer: 17 hours

Explanation:

Answer:

0.10 m

Explanation:

Given in the x direction:

v₀ = 0.24 m/s

a = 0 m/s²

t = 0.42 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (0.24 m/s) (0.42 s) + ½ (0 m/s²) (0.42 s)²

Δx ≈ 0.10 m

The distance from the table with the horizontal velocity of 0.24 m/s and time t is 0.42 s is 0.10m.

Velocity is defined as the rate of displacement per unit time. It equals the speed along with the direction. Velocity is the vector quantity as it has both magnitude and direction.

The velocity can be classified as instantaneous velocity and average velocity. Average velocity is obtained by the ratio of total displacement to total time. The unit of velocity is m/s.

From the given,

Initial velocity (u) = 0.24 m/s

time = 0.43 s

acc (a) = 0

distance (s) =?

By using the equation of motion:

s = ut + 1/2 (at²)

 = 0.24×0.42 + (0×0.42×0.42)/2

 = 0.10 + 0

s = 0.10 m

Thus, the distance traveled from the table is 0.10 m.

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Answer:

louder sound.

Explanation:

The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound

Answer:

i think it's A

because if there is more friction then it will create more hindrance for the current to flow which is ultimately called resistance .

Answer:

D, valence electrons.

Explanation:

Since the number of shells are dependent on the number of valence electrons, which determines the period of the element. Because each shell of an element holds a total of 8 valence electrons, there is a chemical association that is being made between the outer electrons and the atom.

Answer:

The correct answer is D. Its valence electrons.

Explanation:

The valence electrons are those that participate in reactions with other elements.  The fewer valence electrons that an element has, the less stable it becomes; an element with a full valence electron shell does not frequently interact with other elements.  In this way, the valence electrons determine the chemical properties of an element.

Hope this helps!

Answer:

Ffriction = 90 N

coefficient = 0.3

Explanation:

First, note that the sum of all the forces in the x directions equals the mass multiplied by the acceleration in the x direction.

assuming the direction of the pulling force is positive,

243 N - Ffriction = m * a

m= 30.6 kg

a= 5 m/s/s

Ffriction= 243 - m*a

Ffriction= 243 - (30.6)(5)

Ffriction=90 N

The force of friction is equal to the coefficient of friction multiplied by the normal force on the object. Because the pulling force is completely horizontal, the normal force of the object is equal to its weight, which is m * g, or (30.6 kg)(9.8 m/s/s) = 299.88 N

Ffriction = coefficient * Fnormal

90 = coefficient * 299.88

coefficient = 0.3

Answer:

The ball will continue to move at a constant speed forever until another force stops it.

Explanation:

Newton's first law of motion can be seen as a law of inertia. It explains that an object at rest or in a state of uniform motion will remain in that state unless it is acted upon by an external force.

Following the above, when the ball is thrown into space, the ball will continue to move with the velocity with which it was thrown until it comes in contact with another object that stops it. If this does not happen, it will continue to drift forever at that velocity.

Answer:

25N

Explanation:

if you calculate it right the answer will be 25

Answer:

d is the fastest and c is the slowest

Explanation:

physics

Answer:

Neptune will move the fastest

Mercury will move the slowest

Explanation: Because what ever is closer to a object will move the slowest and something further away will have to go faster to keep up with the object that is closer.

Answer:

I = 7.826A

R = 29.38 Ω

Explanation:

First, let us find the current of the microwave.

Let us use the below formula for that.

Power = Voltage × Current

Current = Power ÷ Voltage

             = 1800w ÷ 230v

             = 7.826 A

And now let us find the resistance using the below formula.

Voltage = Current × Resistance

Resistance = Voltage ÷ Current

                   = 230V  ÷ 7.826A

                    = 29.38 Ω

Other characteristics that Nima can share with her students are as follows:

Visible light is one of the components of the electromagnetic spectrum (EM). It is the only part of the EM spectrum that is visible to human eyes.

According to this question, Nima has already shared this characteristics of visible light with her student.

Other characteristics that Nima can share with her students are as follows:

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Answer:

we have sung a song .change into simple present tense

Answer:

A- James Braid

Explanation:

e2020

Answer:

t = 9.38 seconds

Explanation:

Given that,

Initial speed of the airplane, u = 0 (at rest)

Final speed of the airplane, v = 77 m/s

Acceleration of the airplane, a = 8.2 m/s²

We need to find the time required for the airplane to accelerate. The formula of acceleration is given by :

[tex]a=\dfrac{v-u}{t}\\\\t=\dfrac{v-u}{a}\\\\t=\dfrac{77-0}{8.2}\\\\t=9.38\ s[/tex]

So, the time taken by the airplane is 9.38 seconds.

Answer:

9896

Explanation:

multiply them all together

Answer:

Boiling Point

Explanation:

When a liquid changes to a gas is called the boiling point.