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cestrela7 [59]
3 years ago
10

Est ce qu’un cricket c’est un consommateur

Physics
1 answer:
Sholpan [36]3 years ago
7 0

Answer:

Oui

Explanation:

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The surface temperature of a star can be estimated based on the star’s a. size. c. age. b. color. d. mass. Please select the bes
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Imagine a system where a block rests on an inclined plane. The block is then given an initial push so that it starts sliding dow
katen-ka-za [31]

Answer:

the correct affirmation is the 3

Explanation:

Let's analyze the problem with Newton's second law before looking at the claims.

X axis parallel to the plane, positive down

      F -fr + Wₓ = ma

Y Axis perpendicular to the plane

      N -Wy = 0

With trigonometry

     Wₓ = W sin θ

     Wy = w cos θ

Let's multiply by the displacement along the plane, to relate to the work, which has as expression W = F d

     F d -fr d + Wx d = ma d

Push                  W₁ = Fd

frictional force  W₂ = -fr d

gravity               W₃ = Wx d

    W₁ + W₃ -W₂ = m a d

Analysis affirmations:

R1) false. The work of gravity is the subtraction    

R2) false. Each force contributes according to its magnitude

R3) true. In the equation we see that, if the acceleration is zero, W2 = W1 + W3

R4) False. It equals the difference

the correct affirmation is the 3

6 0
3 years ago
Can someone answer these?
Scorpion4ik [409]

Nine

Basically you are using d = r * t

Frequency is 1 / t

d is more commonly represented by lambda (\lambda). Lambda is the wavelength.

so the formula \lambda = c / f

More commonly it is written as \lambda*f = c.

Givens

c = 3*10^8 m/s

\lambda = 0.1 nm = 0.1 nm *[1 m /1 * 10^9 nm] = 0.1 * 10^ - 9 meters.

f = ??

f = \dfrac{3*10^8}{0.1 * 10^-9}

f = 3 * 10^8  * 10^9 /  0.1  = 3 *  10^18

Answer: C

Ten

\lambda = c/f

\lambda = 3*10^8 / 1 * 10^16

\lambda = 3*10^-8 meters

\lambda = 30 * 10^-9 meters = 30 nm

Answer: D


7 0
3 years ago
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