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Sphinxa [80]
3 years ago
10

Help fast please thsnks

Physics
2 answers:
notsponge [240]3 years ago
5 0
C. Switches R and T only.
These 2 switches will begin to connect the solar panel to the battery and start to power up the battery without turning on the lightbulb.
klio [65]3 years ago
5 0
I'm pretty sure it's C because switches only go to the battery its not connect to S and that one is connect to the light bulb so the answers C
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An airplane is being pushed West by its engines with a force of 350 N as it starts to take off the runway at the Atlanta airport
Marizza181 [45]

Answer:

option C

Explanation:

given,

Force by the engine on plane in West direction = 350 N

Frictional force on the runway = 100 N in east

force exerted by the wind = 100 N in east

net force and direction = ?

consider west to be positive and east be negative.

when airplane will be moving there will be frictional as well as wind resistance will be acting in opposite direction of airplane

Net force = 350 N - 100 N - 100 N

                 = 150 N

as our answer comes out to be positive so the airplane will be moving in West

hence, the correct answer is option C

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2 years ago
Juans mother drives 7.25 miles southwest to her favorite shopping mall. What is the average velocity of her automobile if she ar
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What is a mixture of rock and mineral fragments, organic matter, air, and water called?
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The answer should be soil
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9. Use the following information to answer parts a, b, c and d
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iittdhusludepeotlke is the only person who has ever seen a long distance friend from which he is the 3PM and 3AM and I

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In a common but dangerous prank, a chair is pulled away as a person is moving downward to sit on it, causing the victim to land
Marina CMI [18]

Answer:

(a) \vec{J}=176.4\frac{kg*m}{s} \hat{j}

(b) F=2125.30N

Explanation:

(a) According to the law of conservation of energy, the potential energy of the person at 0.40 m is equal to its kinetic energy before the colision with the floor:

\Delta U=\Delta K\\mgh=\frac{mv^2}{2}\\v=\sqrt{2gh}\\v=\sqrt{2(9.8\frac{m}{s^2})(0.40m)}\\v=2.8\frac{m}{s}

This is the initial velocity in the negative y-direction. Impulse is given by:

\vec{J}=\Delta \vec{p}\\\vec{J}=m\vec{v_f}-m\vec{v_i}\\\vec{J}=63kg(0 \hat{j})-63kg(-2.8\frac{m}{s} \hat{j})\\\vec{J}=176.4\frac{kg*m}{s} \hat{j}

(b) The average force is:

F=\frac{J}{\Delta t}\\F=\frac{176.4\frac{kg*m}{s}}{0.083s}\\F=2125.30N

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