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Dmitrij [34]
3 years ago
12

What is the magnitude of electric field at apoint 2 meter from a point charge q= 4nc​

Physics
1 answer:
rjkz [21]3 years ago
8 0
I do not have a clue i need to answer so i can ask questions sorry
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A rope pulls a 82.5 kg skier at a constant speed up a 18.7° slope with μk = 0.150. How much force does the rope exert?
Artist 52 [7]

Answer:

374 N

Explanation:

N = normal force acting on the skier

m = mass of the skier = 82.5

From the force diagram, force equation perpendicular to the slope is given as

N = mg Cos18.7

μ = Coefficient of friction = 0.150

frictional force is given as

f = μN

f =  μmg Cos18.7

F = force applied by the rope

Force equation parallel to the slope is given as

F - f - mg Sin18.7 = 0

F - μmg Cos18.7 - mg Sin18.7 = 0

F = μmg Cos18.7 + mg Sin18.7

F = (0.150 x 82.5 x 9.8) Cos18.7 + (82.5 x 9.8) Sin18.7

F = 374 N

6 0
4 years ago
Which statement best compares potential and kinetic energy?. .
Pachacha [2.7K]
The statement that best compares potential and kinetic energy would be : B. only kinetic energy increases when velocity of an object increases

Formula in calculating kinetic energy is : 1/2 m v^2.
which mean as velocity increased, the kinetic energy would be larger

hope this helps
5 0
3 years ago
Read 2 more answers
Speed can be defined as
Natali5045456 [20]

Answer:Speed can be defined as

Explanation: B because if you think about it, 50 milers per hour means they are dividing the time it takes to drive a certain distance going that speed. So id has to be answer B! your welcome. Please upvote only if its correct!

7 0
3 years ago
What is the voltage at resistor #3? (must include unit - V)
Romashka-Z-Leto [24]

Explanation:

I = 120/30=2A

Voltage across R3= current × resistance

= 2A × 15 ohm = 30 volt

5 0
3 years ago
I need help! plz, It's about energy. its just middle school science
Anit [1.1K]

Answer:

it would be 12/A

Explanation:

if you dived 5 by 12 youll get 60 and you cant get 60 y anything else in there so therefor its 12 :)

8 0
3 years ago
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