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Makovka662 [10]
3 years ago
7

4. According to Newton third law what is the action force? The swimmer pushes against the water the water pushes back on the swi

mmer and pushes he forward
A. The swimmer pushing against the water
B. The water pushing on the swimmer
C. The friction as the swimmer dives into the water
D. The mass of the water
5. According to Newton’s third law what is the reaction force? The ball put a force on the wall, and the wall puts a force on the ball bounces off
A. The balls force against the wall
B. The ball inertia
C. The walls force against the ball
D. The walls mass

PLEASE ANSWER ALL
PLEASE ANSWER ALL CORRECT!!!!!

Physics
2 answers:
rusak2 [61]3 years ago
4 0
Hahaha are you k12? I'm pretty sure the answer is a, and c and for the photos maybe three newtons left for 16 and six newtons right for 18? I'm not sure 17 I'm working on it right now
marshall27 [118]3 years ago
3 0
A.The swimmer pushes the water
C. the walls force against the ball
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Bryce, a mouse lover, keeps his four pet mice in a roomy cage, where they spend much of their spare time (when they are not slee
user100 [1]

Answer:

I₁ = (7.78 i ^ - 6.71 j ^) 10⁻³ J s ,  I₂ = (-12.5 i ^ -14.6 j ^) 10⁻³ J s ,  I₃ = (19.1i ^ + 18.6 j ^) 10⁻³ J s  and I₄ = (-9.14i ^ + 7.24 j ^) 10⁻³ J s

Explanation:

The impulse is equal to the variation of the moment, to apply this relationship to our case, we will assume that initially the mouse was at rest

    I = Δp = m v_{f} -m v₀

    I = m (v_{f}  -v₀)

Bold indicates vector quantities, let's calculate the momentum of each mouse in for the x and y axes

We recommend bringing all units to the SI system

Mouse 1.

It has a mass of 22.3 g = 22.3 10⁻³ kg, a final velocity of (v = 0.349 i ^ - 0.301 j ^) m / s with an initial velocity of zero

    Iₓ = m (v_{fx}  - v₀ₓ)

    Iₓ = 22.3 10⁻³ (0.349 -0)

    Iₓ = 7.78 10⁻³ J s

   I_{y} = m (v_{fy}  -v_{oy} )

   I_{y} = 22.3 10⁻³ (-0.301)

   I_{y} = -6.71 10⁻³ J s

   I₁ = (7.78 i ^ - 6.71 j ^) 10⁻³ J s

Mouse 2

Mass 17.9 g = 17.9 10⁻³ kg

Speed ​​(-0.699 i ^ - 0.815 j ^) m / s

    Iₓ = m (v_{fx}  - v₀ₓ)

    Iₓ = 17.9 10⁻³ (-0.699 -0)

    Iₓ = -12.5 10⁻³ J s

    I_{y} = 17.9 10⁻³ (-0.815 - 0)

    I_{y} = -14.6 10⁻³ J s

   I₂ = (-12.5 i ^ -14.6 j ^) 10⁻³ J s

Mouse 3

Mass 19.1 g = 19.1 10⁻³ kg

Speed ​​(0.745i ^ + 0.975 j ^) m / s

    Iₓ = 19.1 10⁻³ (0.745 -0)

    Iₓ = 14.2 10⁻³ J s

    I_{y} = 19.1 10⁻³(0.975 -0)

    I_{y} = 18.6 10⁻³ J s

    I₃ = (19.1i ^ + 18.6 j ^) 10⁻³ J s

Mouse 4

Mass 10.1 g = 10.1 10⁻³ kg

Speed ​​(-0.905i ^ + 0.717j ^) m / s

    Iₓ = 10.1 10⁻³ (-0.905 -0)

    Iₓ = -9.14 10⁻³ J s

    I_{y} = 10.1 10⁻³ (0.717 -0)

    I_{y} = 7.24 10⁻³ J s

   I₄ = (-9.14i ^ + 7.24 j ^) 10⁻³ J s

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3 years ago
The slope of the the line is the _______ of the object
Nat2105 [25]

Answer:

rate of change

Explanation:

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A car travels around a curve. What can you say about the centripetal force if the velocity is tripled?
Lesechka [4]

Answer:

F = M a = M v^2 / R

If v is increased by three the force will be increased by nine,

C) is correct

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2 years ago
Question on Resistance. WORTH 20 POINT
kirill [66]

From Ohm's law:  R = V / I

Resistance = (voltage) / (current)

The first paragraph TELLS you that the current is always 0.5 A, and the table tells you the voltage across each piece of wire.

Again . . .  <em>R = V / I</em>

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Hey guys, I have a question about heat and stuff, and converting. THINK YOU COULD HELP?! THANKS!
Alexxandr [17]

Before answering this question it is necessary to know the conversion factors for temperatures.

<em>273 k = 0 ° C </em>

To transform a temperature from Kelvin to ° C we use the following Formula

T ° C = T Kelvin - 273

<u>For 373 K</u>

373K -273 = 100 ° C

<em>373 Kelvin equals 100° C. </em>

To transform a temperature from ° C to ° F we use the following formula:

(T° C x 9/5) + 32 = T ° F

Then:

<u>For 0 ° C </u>

(0° C x 9/5) +32 = 32 ° F

<em>0° C equals 32 ° F. </em>

<u>For 100° C </u>

(100 ° C x 9/5) +32 = 212 F

<em>100 ° C equals 212 ° F. </em>

Therefore, the correct option is the first:

373 Kelvin = 100 ° C = 212 ° F

4 0
3 years ago
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