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Answer:

Huh?

Explanation:

Answer:

0.84

Explanation:

m = Massa balok

g = Percepatan gravitasi

[tex]\theta[/tex] = Sudut kemiringan

[tex]\mu[/tex] = Koefisien gesekan statik antara balok dan bidang miring

Gaya balok karena beratnya diberikan oleh

[tex]F=mg\sin\theta[/tex]

Gaya gesekan diberikan oleh

[tex]f=\mu mg\cos\theta[/tex]

Kondisi dimana balok mulai bergerak adalah ketika gaya balok akibat beratnya sama dengan gaya gesek pada balok.

[tex]mg\sin\theta=\mu mg\cos\theta\\\Rightarrow \mu=\dfrac{mg\sin\theta}{mg\cos\theta}\\\Rightarrow \mu=\tan\theta\\\Rightarrow \mu=\tan40^{\circ}\\\Rightarrow \mu=0.84[/tex]

Koefisien gesekan statik antara balok dan bidang miring adalah 0.84.

Answer:

The true statement is;

Neither momentum or kinetic energy is conserved

Explanation:

The question relates to the verification of the conservation of linear momentum, and kinetic energy

The given parameters are;

The mass of each astronaut = 100 kg

From which, we have;

The mass of the moving astronaut, m₁ = 100 kg

The mass of the stationary astronaut, m₂ = 100 kg

The initial velocity of the moving astronaut, v₁ = 5 m/s

The initial velocity of the stationary astronaut, v₂ = 0 m/s

The final velocity of both astronauts, v₃ = 3 m/s

The sum of the initial momentum of both astronauts is given as follows;

[tex]P_{initial}[/tex] = m₁·v₁ + m₂·v₂ = 100 kg × 5 m/s + 100 kg × 0 m/s = 500 kg·m/s

[tex]P_{initial}[/tex] = 500 kg·m/s

The sum of the final momentum of the astronauts is given as follows;

[tex]P_{final}[/tex] = m₁·v₃ + m₂·v₃ = (m₁ + m₂) × v₃ = (100 kg + 100 kg) × 3 m/s = 600 kg·m/s

[tex]P_{final}[/tex] = 600 kg·m/s

∴ [tex]P_{initial}[/tex] = 500 kg·m/s ≠ [tex]P_{final}[/tex] = 600 kg·m/s

[tex]P_{initial}[/tex] < [tex]P_{final}[/tex], therefore, the sum of the linear momentum of both astronauts is not conserved

The sum of the initial kinetic energy of each astronaut is given as follows;

[tex]K.E._{initial}[/tex] = 1/2·m₁·v₁² + 1/2·m₂·v₂² = 1/2 × 100 kg × (5 m/s)² + 1/2 × 100 kg × (0 m/s)² = 1250 Joules

[tex]K.E._{initial}[/tex] = 1250 Joules

The sum of the final kinetic energy of the astronaut is given as follows;

[tex]K.E._{final}[/tex] = 1/2·m₁·v₃² + 1/2·m₂·v₃² = 1/2 × 100 kg × (3 m/s)² + 1/2 × 100 kg × (3 m/s)² = 900 joules

[tex]K.E._{final}[/tex] = 900 joules

[tex]K.E._{initial}[/tex] > [tex]K.E._{final}[/tex], therefore, the kinetic energy is not conserved

From which we get that neither momentum or kinetic energy is conserved.

Answer:

The gravitational potential energy decreases and the kinetic energy increases. The gravitational potential energy is transformed into kinetic energy as the ball rolls down the ramp.

Explanation:

The gravitational potential energy is the energy due to the position of a body above the ground.

Kinetic energy is the energy due to the motion of a body.

From the law of conservation of energy "energy is neither created nor destroyed but transformed from one form to another".

As the ball rolls down the ramp, the potential energy at the height is converted to kinetic energy.

Answer:

runoff from precipitation

precipitation falls direction into the collection area

Explanation:

i took the test

A collection area gains water as runoff from precipitation or precipitation falling into the collection area.

A collection area is an area set aside for the purpose of collecting water. This water could come into the collection area as precipitation or as surface run off.

Hence, a collection area could gain water via;

Out of the options in the questions, these are two ways in which collection areas can receive water.

Learn more about surface runoff: https://brainly.com/question/998881

Answer:

8.803 s

(but this is only if it's a free fall, which we assume since we didn't get the mass of the hulk)

Answer:

I dont really know but i think its water type of energy

Explanation:

Hope it helps

Answer:

E=hf

Were, h = Planck constant 6.67*10^11

E=3.8*10^24 * 6.67*10^11= 2.508*q0^36j

Answer:

Fusion or energy because I had that question in my school so I wrote it in my notes book so it fusion or energy I don’t now hop this help you

Explanation:

Answer:

here again

Explanation:

here my answer

Answer:

c

Explanation:

Answer:

it's d

Explanation:

because if you had energy you could do anything but without energy you won't be able to so anything

hope this helps

The velocity of the male skater is 2.5 m/s in opposite to the direction of the female skater moving.

According to the law of conservation of momentum, The overall momentum of two or more bodies acting on one another in an isolated system stays constant unless an external force is introduced. As a result, momentum cannot be gained or lost.

Given parameters:

The mass of the male ice skater is: M = 62 kg.

The mass of the female ice skater is: m = 42 kg.

Initially both of them are in rest.

After they push off each other and move in opposite directions, the female skater moves backwards with a speed of v =3.7 m/s.

Let the speed of the male  ice skater is V m/s now.

From  the law of conservation of momentum:

MV + mv = 0

V = - mv/M

= - (42×3.7)/62 m/s

= - 2.5 m/s

Hence, the velocity of the male skater is 2.5 m/s in opposite to the direction of the female skater moving.

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You need to know the time as well.

Answer:

they are equal and act in opposite directions

Explanation:

newton's third law of motion states that if object A exerts a force on object B, then object B will exert an equal but opposite in direction force.

hope it helps, I think my response was late,

Answer:

Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction.

Explanation:

Answer:

A

Explanation: A is a example of Air resistance force, which is a contact force.

Answer:

40g/mol

Explanation:

The molar mass of a compound is the mass in grams of one mole of the substance.

To find the molar mass of NaOH;

a. Atomic mass of Na = 23g

                              O  = 16g

                               H = 1g

b. So, the NaOH will have a molar mass of:

            23g + 16g + 1g   = 40g/mol

The molar mass of NaOH is   40g/mol

Answer:

32200

6*5370

Explanation:

Answer:

v = 31.89 m/s

Explanation:

p = m × v

1,850 = 58 × v

58v = 1,850

v = 1,850/58

v = 31.89 m/s

Answer:

An endothermic reaction is one in which heat is transferred from the surroundings to the reactants.------- true

Answer:

T . Energy is transferred to the reactants

Explanation:

Answer:

16 mm with 14 mm inside diameter.

Answer:

50 x 3000 = 150000/4000 = 37.5

37.5 I think.

Explanation:

Hope this helps!

A 3000 kg truck travelling at 50km/hr strikes a stationary 1000 kg car, locking the two vehicles together, the final velocity of the two vehicles after the collision is approximately 10.43 m/s.

We may use the concept of conservation of momentum to calculate the final velocity of the two vehicles after the collision.

The total initial momentum (P_initial) is given by:

P_initial = (mass of truck) * (initial velocity of truck) + (mass of car) * (initial velocity of car)

P_initial = (3000) * (50) + (1000) * (0)

The velocity:

Vt = 50 * (1000/3600) = 13.9 m/s

Vc = 0 = 0 m/s

P_initial = (3000) * (13.9) + (1000) * (0 )

P_initial = 41700 kg·m/s

P_initial = P_final

41700 kg·m/s = (3000 kg + 1000 kg) * Vf

41700 kg·m/s = 4000 kg * Vf

Now Vf:

Vf = 41700 kg·m/s / 4000 kg

Vf ≈ 10.43 m/s

Therefore, the final velocity of the two vehicles after the collision is approximately 10.43 m/s.

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Answer:

 oil floats in water due to the fact that it is less dense. since the water is more dense, it is basically heavier, and heavier items always sink, while lighter items float, the same can be said about liquids. denser liquids will sink while less dense items will float.

Answer:

30J

Explanation:

Given parameters:

Mass of box  = 1.5kg

Height  = 2m

Acceleration due to gravity  = 10N/kg

Unknown:

Change in gravitational potential energy  = ?

Solution:

 The change in gravitational potential energy is given as:

      ΔGPE  = mgh  

m is the mass

g is the acceleration due to gravity

h is the height

   ΔGPE  = 1.5 x 10 x 2  = 30J

Answer:

20 is Solvent this is the answer u divide them

Answer:

Motion at one end of the beam results in motion at the other end in the opposite direction.

Explanation:

The location of the fulcrum can magnify (or reduce) the force applied at one end at the expense (or advantage) of the distance over which the other end travels. Sorry if I get this wrong! I am in 5th grade. ♥