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natulia [17]
2 years ago
12

8. How do you think that might be the reason why the Sun warms more in the summer? To give your explanation can rely on the angl

e of the sunlight falling in the months: January, March and June.​
Physics
1 answer:
gregori [183]2 years ago
8 0

Answer:

Because the angle of the sun moves/rotates in the summer, the sun's rays move their angle and impact the earth.

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A velocity selector can be used to measure the speed of a charged particle. A beam of particles is directed along the axis of th
Contact [7]

Answer:

C. 450v

Explanation:

Using

Voltage= B*distance of separation*velocity

3mm x 0.3T x 5E5m/s

= 450v

5 0
3 years ago
1. An isotope has the same ________, but a different ________ .
Vika [28.1K]
1:D(Atomic number, Mass number)  2:B(Neutrons)  3:b(18) hope it helps
3 0
3 years ago
Blood flow rates in the umbilical cord can be found by measuring the Doppler shift of the ultrasound signal reflected by the red
lesya692 [45]

Answer:

fR = f(c + v)/c

Explanation:

The speed of a wave is its frequency x wavelenght. Therefore,

Frequency is speed of wave over the wavelength.

Since the source (ultrasound machine) is stationary, and the receiver red blood cell is moving towards it. The wavelenght of the wave sent out towards the observer is c/f

The speed of the reflected sound wave is (c + v), so that the reflected frequency fR is given by

fR = f(c + v)/c

5 0
3 years ago
How long does it usually take a hypothesis to become a theory
Ann [662]

Answer:

If enough evidence accumulates to support a hypothesis, it moves to the next step (known as a theory) in the scientific method and becomes accepted as a valid explanation of a phenomenon.

7 0
3 years ago
Read 2 more answers
Lolliguncula brevis squid use a form of jet propulsion to swim—they eject water out of jets that can point in different directio
romanna [79]

Answer:

a) t = 0.25 s,  b)  x = 0.075 m

Explanation:

a) For this exercise we will use kinematic relationships in one dimension

         v = v₀ + a t

in the problem they indicate the initial velocity v₀ = 0.15 m / s, the final velocity v = 0.45 m / s and the acceleration of the squid a = 1.2 m / s²

          t = \frac{v -v_o}{a}

       

we calculate

         t = \frac{0.45 - 0.15}{1.2}

         t = 0.25 s

b) We can also find the distance traveled during this acceleration

         v² = v₀² + 2a x

         x = \frac{v^2 -v_o^2 }{2a}

let's calculate

         x = \frac{0.45^2 - 0.15^2 }{2 \  1.2}

         x = 0.075 m

6 0
2 years ago
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