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3 years ago

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A 2.69-kg drone is flying over a lake. With both the x and y directions horizontal (that is, viewing the drone from above), the

drone's velocity changes from (3.26 m/s)i + (0.00 m/s)j to (7.22 m/s)i + (4.67 m/s)j in 6.22 s.

1 answer:

eimsori [14]3 years ago

4 0

bad bleep chanve 9922

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What category of the electromagnetic spectrum has a wavepength of 108m

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Answer: Radio Waves

Explanation:

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Express the distance between the moon and earth in meters with a meter prefix (km).

tankabanditka [31]

Answer;

= 3.86 × 10^8 Meters

Explanation;

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3 years ago

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A. A light wave moves through glass (n=1.5) at an angle of 25°. What angle will it have when it moves from the glass into air (n

torisob [31]

PART A)

By Snell's law we know that

$n_1sin i = n_2 sin r$

here we know that

$n_1 = 1.5$

$i = 25 degree$

$n_2 = 1$

now from above equation we have

$1.5 sin25 = 1 sin r$

$r = 39.3 degree$

so it will refract by angle 39.3 degree

PART B)

Here as we can see that image formed on the other side of lens

So it is a real and inverted image

Also we can see that size of image is lesser than the size of object here

Here we can use concave mirror to form same type of real and inverted image

PART C)

As per the mirror formula we know that

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

$\frac{1}{d_i} + \frac{1}{60} = \frac{1}{20}$

$d_i = 30 cm$

so image will form at 30 cm from mirror

it is virtual image and smaller in size

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3 years ago

What is the SI unit used to measure the temperature of a substance?

ss7ja [257]

Answer:

Kelvin

Explanation:

Kelvin is the universal and scientific unit for temperature as Celsius and Fahrenheit temperatures we use in everyday situations

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3 years ago

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Viefleur [7K]

Answer:

B. Mechanical energy= 50J+30J=80J

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3 years ago