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Fittoniya [83]
3 years ago
11

1.- La gráfica muestra la variación de la aceleración a de un objeto con el tiempo t.

Physics
1 answer:
STatiana [176]3 years ago
5 0

Answer:

Te ayudo con una de prueba $

Explanation:

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What is velocity ratio ?​
Rasek [7]

The ratio of the distance moved by the point at which the effort is applied in a simple machine to the distance moved by the point at which the load is applied, in the same time. In the case of an ideal (frictionless and weightless) machine, velocity ratio = mechanical advantage. Velocity ratio is sometimes called distance ratio.

5 0
3 years ago
Claudia throws a baseball to her dog. Which free-body diagram shows the
chubhunter [2.5K]

Answer:

only the weight of the ball will act on the ball

Explanation: There is no contact force on the ball. Also there is no air resistance on the ball so the friction force on the ball due to air is not shown

6 0
3 years ago
Which of the following statements best describes an electromagnetic wave with a long wavelength?
zmey [24]
It has a high frenquency and can only travel through a medium
5 0
3 years ago
A student coils a copper wire around a bar magnet. What action will cause the device to generate electricity?
kolbaska11 [484]

I hope the wire is not wound too tightly around the bar magnet.
The device will generate electrical energy when the bar magnet
is moving in or out of the coil of wire.

6 0
3 years ago
A bat can detect small objects such as an insect whose size is approximately equal to the wavelength of the sound the bat makes.
slamgirl [31]

Answer:

size of insect = wavelength = 16.1 mm

Explanation:

Since the bat can detect the size of small insects which are of size equal to the wavelength of sound in air

So here we can say that the wavelength of sound is the ratio of speed of sound and its frequency

here we know that

speed of sound in air is 536 m/s

frequency of sound is 33.3 kHz

so here we can say

\lambda = \frac{v}{f}

\lambda = \frac{536}{33.3 \times 10^3}

\lambda = 0.0161 m

\lambda = 16.1 mm

7 0
3 years ago
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