3 years ago

Aplicar ley de Seno y Coseno

Physics

1 answer:

ycow [4]3 years ago

7 0

Answer:

Es 100000

Explanation: qppp-100

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Plz help!!!!!!!!!!!!!!!!!!

cestrela7 [59]

Skip it but most probably the second one

3 0

4 years ago

An enemy spaceship is moving toward your starfighter with a speed, as measured in your frame, of 0.400c. The enemy ship fires a

kvasek [131]

Answer:

0.859375c

31.03 seconds

Explanation:

v' = Velocity of my ship = 0.4 c

u = Velocity of rocket = 0.7 c

c = Speed of light = $3\times 10^8\ m/s$

s = Distance between my ship and enemy ship = $8\times 10^6\ km$

Relativistic addition of speed is given by

$v=\dfrac{v'+u}{1+\dfrac{uv'}{c^2}}\\\Rightarrow v=\dfrac{0.7+0.4}{1+\dfrac{0.7c\times 0.4c}{c^2}}\\\Rightarrow v=0.859375\ c$

The speed of the missile is 0.859375c

Time is given by

$t=\dfrac{s}{v}\\\Rightarrow t=\dfrac{8\times 10^9}{0.859375\times 3\times 10^8}\\\Rightarrow t=31.03\ s$

It will take 31.03 seconds to reach me.

6 0

3 years ago

Calculate the average Power in kilowatts required to pull a car up a ramp in the amount of work is 250 KJ over a period of 45 se

kherson [118]

For this case we have that by definition, the average power is given by:

$P = \frac {W} {t}$

Where:

W: It is the work done

t: It's time

According to the data we have to:

$W = 250 \ KJ = 250,000 \ J\\t = 45 \ s$

So:

$P = \frac {250,000} {45}\\P = 5555.55 \ watts = 5.56 \ kw$

Answer:

$5.56 \ kw$

5 0

4 years ago

If a dolphin swims at 15 m/s for 30 seconds, how far would the dolphin swim?

Olegator [25]

It would swim 30*15 metres, which is 450 metres.

7 0

3 years ago

What are 3 artificial and 2 natural sources of electromagnetic radiation?

KatRina [158]

Answer: its b bro

Explanation:

ajafa'jfbA'FJ

8 0

3 years ago