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3 years ago

Which statements describe the motion of the object represented by the graph? Check all that apply.

Physics

1 answer:

bonufazy [111]3 years ago

5 0

Answer:

The object is moving away from the origin

The object started at 2 meters

The object is traveling at a constant velocity

Explanation:

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Describe the laws of liquid pressure and Explain the term fluid. (Please give the correct answer, it's really urgent)

Alla [95]

Answer:

The laws of liquid pressure are

(i) Pressure inside the liquid increases with the depth from the free surface of the liquid.

(ii) Pressure is same at all points on a horizontal plane, in case of stationary liquid.

(iii) Pressure is same in all directions about a point inside the liquid.

(iv) Pressure at same depth is different in different liquids. It increases with the increase in the density of the liquid.

(v) A liquid will always seek its own level.

A Fluid is any liquid or gas or generally any material that cannot sustain a tangential, or shearing, force when at rest.

Explanation:

3 0

2 years ago

Why do the planets in our solar system stay in their positions?.

SVETLANKA909090 [29]

The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.

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2 years ago

An L-C circuit containing an 82.0-mH inductor and a 1.60-nF capacitor oscillates with a maximum current of 0.800 A . Assuming th

ryzh [129]

Answer:

19.5 mJ

Explanation:

Assuming perfect components without resistance or losses, the circuit should oscillate indefinetly.

The circuit will have a natural pulsation of

$w = \frac{1}{\sqrt{L * C}} = \frac{1}{\sqrt{82e-3 * 1.6e-9}} = 87304 rad/s$

$f = \frac{w}{2\pi} = \frac{87304}{2\pi} = 13895 Hz$

$T = \frac{1}{f} = \frac{1}{13895} = 7.2 \mu s$

So, by the time t = 2.4 ms, 333.33 cycles would have passed

$\frac{2.4 ms}{7.2 \mu s} = \frac{2400 \mu s}{7.2 \mu s} = 333.33$

Therefore it would be at one third after the beginning of the cycle. The circuit would be in an equivalent state as t = (7.2 us)/3 = 2.4us

At t=0 the capacitor is fully charged, so the voltage is maximum and the current is 0. The current will increase towards a maximum of 800 mA at t=T/4, then decreas to 0 at t=T/2, decrease to -800 mA at 3T/4 and go back to 0 at t=T following a sine wave.

The equation of this sine wave would be

$I(t) = I0 * sin(w * t)$

$I(T/3) = 0.8 * sin(w * T/3)$

Since w = 2π/T

w * T = 2π

$I(T/3) = 0.8 * sin(2 \pi /3) = 0.8 * 0.866 = 0.69 A$

The current stored in an inductor is

$E = \frac{1}{2} * L * I^2$

$E = \frac{1}{2} * 82e-3 * 0.69^2 = 0.0195 J = 19.5 mJ$

6 0

3 years ago

The velocity of a particle is described

Dmitry_Shevchenko [17]

Answer:

hope you like it

Explanation:

To find velocity, we take the derivative of the original position equation. To find acceleration, we take the derivative of the velocity function. To determine the direction of the particle at t = 1 t=1 t=1, we plug 1 into the velocity function.

4 0

3 years ago

A tortoise can run with a speed of 10.0 cm/s, and a hare can run exactly 20 times as fast. In a race, they both start at the sam

Travka [436]

Answer: The race takes 126.21 seconds.

Explanation:

By definition:

$d=Vt$