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baherus [9]
2 years ago
13

What is the speed of the animal from 0-20s? 50 m/s 0.4 m/s 20 m/s 2.5 m/s

Physics
1 answer:
Shkiper50 [21]2 years ago
3 0

Answer:

2.5 m/s

Explanation:

The speed of the animal is given by the ratio between the distance travelled by the animal and the time elapsed:

v=\frac{d}{t}

where d is the distance travelled and t the time elapsed. Note that this quantity is also equal to the slope of the curve.

In the time interval 0-20 s, we have

d = 50 m - 0 m = 50 m

t = 20 s - 0 s = 20 s

So, the speed is

v=\frac{50 m}{20 s}=2.5 m/s

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The velocity of the transverse waves produced by an earthquake is 5.05 km/s, while that of the longitudinal waves is 8.585 km/s.
sattari [20]

Answer:

d=691.71km

Explanation:

The time lag between the arrival of transverse waves and the arrival of the longitudinal waves is defined as:

t=\frac{d}{v_t}-\frac{d}{v_l}

Here d is the distance at which the earthquake take place and v_t, v_l is the velocity of the transverse waves and longitudinal waves respectively. Solving for d:

t=d(\frac{1}{v_t}-\frac{1}{v_l})\\d=\frac{t}{\frac{1}{v_t}-\frac{1}{v_l}}\\d=\frac{56.4s}{\frac{1}{5.05\frac{km}{s}}-\frac{1}{8.585\frac{km}{s}}}\\d=691.71km

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Two objects gravitationally attract with a force of 10N. If the distance between the two objects center is doubled, then the new
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Answer:

20N

Explanation:

10×2

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As a person pushes a box across a floor, the energy from the person’s moving arm is transferred to the box, and the box and the
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Answer:

conserved

Explanation:

During this process the energy is conserved

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3 years ago
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How much work is needed to pump all the water out of a cylindrical tank with a height of 10 m and a radius of 5 m
balu736 [363]

Answer:

Explanation:

volume of water being lifted

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= 3.14 x5² x 10

= 785 m³

mass of water = 785 x 10³ kg

mass of this much of water is lifted so that its centre of mass is lifted by height

10 / 2 = 5m .

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= 785 x 10³ x 9.8 x 5

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