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3 years ago

Why do moving back and forth, and moving in a circle look the same on a graph of position versus time?

Physics

1 answer:

Tomtit [17]3 years ago

3 0

Answer:

Because in both kind of motions, the position is periodically repeated. Both are simple harmonic motions.

Explanation:

Moving back and forth means that the moving object goes through the same position every time a certain period of time elapses.

The same is true for the circular motion, every time the object completes a turn, the object is in the same position.

They are examples of simple harmonic motions. The time it takes the object to repeat a complete cycle is called period.

Therefore, in a grahp of position versus time, the curve that represents the position repeats itself every so often equal to one period, both for moving back and forth and for moving in a circle.

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Determine the internal resistance of the capacitor.

11Alexandr11 [23.1K]

Answer:

The equivalent series resistance of a capacitor is the internal resistance that appears in series with the capacitance of the device. Almost all capacitors exhibit this property at varying degrees depending on the construction, dielectric materials, quality, and reliability of the capacitor.

Explanation:

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2 years ago

You place a box weighing 253.1 N on an inclined plane that makes a 39.7◦ angle with the horizontal.

Masja [62]

Answer:

Explanation:

The weight of the box is

W = 253.1N

Weight is on an incline plane

θ = 39.7°

The weight of an object is always acting downward

So, the weight makes an angle of 39.7° with the vertical component

Then, it's horizontal component is

Wx = W•Sinθ

Wx = 253.1 × Sin 39.7°

Wx = 161.67 N

The horizontal component of the weight is 161.67N

This is the force acting down the plane.

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4 years ago

when astronomers study a star, they look at its luminosity, color, surface, temperature, and size. Explain how these characteris

Alona [7]

Explanation:

One of the moments most valued by astronomers is twilight. As the Sun sets, the sky darkens and the first stars are seen. At first there are two or three, but as the minutes go by they become more and more visible; the first to appear will be the brightest stars of the night, the last, the dimmest. But their brightness is not the only thing that differentiates the stars. As the night progresses and the sky darkens, if we look closely, we will see stars of red, white and blue… Stars have colours, and learning about them takes us on a fascinating journey through their lives.

During these early spring weeks, it is easy to locate the constellation of Orion, along with Canis Major and Taurus, shortly after sunset. At first sight, the stars might appear to have the same colour, but if we seek out a dark sky and take a second closer look, we will notice different colours. Sirius (in Canis Major) is white, Rigel (Orion’s right foot) is blue, Aldebaran (in Taurus) is orange and Betelgeuse (Orion’s left shoulder) is red.

3 0

3 years ago

Hunter aims directly at a target (on the same level) 75.0 m away. (a) If the bullet leaves the gun at a speed of 180 m/sby how m

tankabanditka [31]

Answer:

Part a)

$\delta y = 0.85 m$

Part b)

$\theta = 0.65 degree$

Explanation:

Part a)

As we know that the target is at distance 75 m from the hunter position

so here we will have

$x = v_x t$

here we know that

$v_x = 180 m/s$

so we have

$75.0 = 180 (t)$

$t = 0.42 s$

now in the same time bullet will go vertically downwards by distance

$\delta y = \frac{1}{2}gt^2$

$\delta y = \frac{1}{2}(9.81)(0.42^2)$

$\delta y = 0.85 m$

Part b)

In order to hit the target at same level we need to shot at such angle that the range will be 75 m

so here we have

$R = \frac{v^2 sin(2\theta)}{g}$

$75 = \frac{180^2 sin(2\theta)}{9.81}$

$\theta = 0.65 degree$

4 0

4 years ago

If the mass is 50kg, what weight of water is to be displaced to float on water? why

8090 [49]

Answer:

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6 0

3 years ago