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2 years ago

THIS IS A SCIENCE QUESTION, sorry if it says physics, this is middle school science

Physics

1 answer:

Black_prince [1.1K]2 years ago

3 0

Answer:

1. Examples of transverse waves include vibrations on a string and ripples on the surface of water. We can make a horizontal transverse wave by moving the slinky vertically up and down. In a longitudinal wave the particles are displaced parallel to the direction the wave travels.

2. There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves. The animations below demonstrate both types of wave and illustrate the difference between the motion of the wave and the motion of the particles in the medium through which the wave is travelling.

3. f is force and 人 is wave length

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An irregular object of mass 3 kg rotates about an axis, about which it has a radius of gyration of 0.2 m, with an angular accele

Artemon [7]

Answer:

0.06 Nm

Explanation:

mass of object, m = 3 kg

radius of gyration, k = 0.2 m

angular acceleration, α = 0.5 rad/s^2

Moment of inertia of the object

$I = mK^{2}$

I = 3 x 0.2 x 0.2 = 0.12 kg m^2

The relaton between the torque and teh moment off inertia is

τ = I α

Wheree, τ is torque and α be the angular acceleration and I be the moemnt of inertia

τ = 0.12 x 0.5 = 0.06 Nm

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2 years ago

Hip hop dance translate feelings and emotions of human conditions, situations, or fantasies into movement and dramatic expressio

attashe74 [19]

Answer:

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1 year ago

What are two ways friction can be useful

Mnenie [13.5K]

Gravity is an example of friction. If we didn't have gravity, we would be flying all over the place. Also, friction keeps us from sliding on the ground and falling.

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2 years ago

Una caja de 40.0 kg se desliza 4.00 m hacia arriba por un plano inclinado de 26° con respecto a la acción de una fuerza de 340 N

otez555 [7]

Answer:

W = 320.30 J

Explanation:

To calculate the net work done over the block you take into account all implied forces:

$\Sigma F=F+F_gsin\theta-F_fcos\theta$ (1)

The gravitational force and friction force are against the applied force F.

θ = 26°

F: applied force = 340N

Fg: gravitational force = Mg = (40.0kg)(9.8m/s^2) = 392N

Ff: friction force = $\mu N=\mu Mg=(0.250)(392N)=98N$

Next, you replace to obtain the net force:

$F_N=(340N)-(392N)sin(26\°)-(98N)cos(26\°)\\\\F_N=80.07N$

Finally, the net work, for 4 m, is:

$W_N=F_Nd=(80.07N)(4m)=320.30J$

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2 years ago

All masses cannot be measured in kilogram, why ?

tigry1 [53]

Answer:

We cannot measure all masses in kg, because there are very small quantities like 1gm nd even smaller, and this will not be an accurate measurement in Kg.

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1 year ago