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3 years ago

Can someone explain what streamlining is in a simple way with an example.

1 answer:

6 0

Imagine a car, and imagine you see little arrows below and beneath it, just around it. <span>The path of a particle that is flowing steadily and without turbulence in a fluid past an object.</span>

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A 50.0 kg crate is pulled 375 N of force applied to a rope. The crate slides without friction.

LUCKY_DIMON [66]

Hi there!

We can use the work-energy theorem to solve.

Recall that:

$\large\boxed{W = \Delta KE = \frac{1}{2}mv_f^2 - \frac{1}{2}mv_i^2}$

The initial kinetic energy is 0 J because the crate begins from rest, so we can plug in the given values for mass and final velocity:

$W = \frac{1}{2}(50)(5.61^2) = 786.8025 J$

Now, we can define work:

$\large\boxed{W = Fdcos\theta}}$

Now, plug in the values:

$786.8025 = Fdcos\theta\\\\786.8025 = (375)(3.07)cos\theta$

Solve for theta:

$cos\theta = .6834\\\theta = cos^{-1}(.6834) = \boxed{46.887^o}$

4 0

2 years ago

Some waves can only travel through matter. What is this matter called?

ANTONII [103]

A water wave is an example of a mechanical wave. A wave that can travel only through matter is called a mechanical wave.

6 0

2 years ago

An english scientist created the first periodic table of elements

olga nikolaevna [1]

Like a then it would be A something I guess it goes like that

8 0

3 years ago

Read 2 more answers

True or False if something was turn to make something is it a chemical reaction

sesenic [268]

If something was turned? I'm not really sure what you are talking about, but for something to become a chemical reaction it involves and arrangement of molecular and ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.

8 0

3 years ago

Read 2 more answers

Educación física como se puede mejorar la técnica deportiva

motikmotik

Answer:

Varíe sus entrenamientos. Para muchos atletas, los ejercicios funcionales son el nombre del juego. ...

Realice un seguimiento y mida su rendimiento durante el entrenamiento. ...

Haga de la hidratación adecuada una prioridad. ...

Dedique suficiente tiempo a la recuperación. ...

Entrena tu cerebro. ...

Alimente su cuerpo de la manera correcta. ...

Considere agregar algunos suplementos a su dieta.

Explanation:

8 0

2 years ago