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Ludmilka [50]
1 year ago
12

In a coordinate system in which the x-axis is east, for what range of angles is the x- component positive? For what range is it

negative?
Physics
1 answer:
trasher [3.6K]1 year ago
6 0
If i remeber correctly when dealing with real world cordinate systems as you rotate around clockwise you move in a positive direction. but all the examples i have done said north was 0 degrees, so i may be wrong
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A bullet starting from rest accelerates uniformly at a rate of 1,250 meters per square second. What is the bullet's speed after
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1 year ago
A uniform ladder 15 ft long is leaning against a frictionless wall at an angle of 53 above the horizontal. the weight of the la
arsen [322]
<h3><u>Answer;</u></h3>

33.9 pounds

<h3><u>Explanation</u>;</h3>

In order for the ladder to be in equilibrium, the net torque should be equal to zero. Therefore, the torque in the opposite directions should equal each other:

Clockwise torque = Counter clockwise torque

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Wι (7.5 ft) cos 53° + Wb (6 ft) cos 53° = F (15 ft) sin 53 °

Substitute the values for the weights of the ladder and the boy, respectively.

(20 lb) (7.5 ft)cos 53° + (75 lb) (6 ft) cos 53° = F(15 ft) sin 53°

Solving for F;

F = ((30 ×7.5 × cos 53°) + (75 × 6 × cos 53°))/ (15 × sin 53°)

  = 33.9 lb

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2 years ago
A particle of mass m=5.00 kilograms is at rest at t=0.00 seconds. a varying force f(t)=6.00t2−4.00t+3.00 is acting on the partic
olga55 [171]
<span>v =Integral(F/m)dtv=Integral(F/m)dt =â«50(6t2â’4t+3)/5dt=â«05(6t2â’4t+3)/5dt =1/5â—(2t3â’2t2+3t)|(0,5)=1/5â—(2t3â’2t2+3t)|(0,5) =1/5â—(250â’50+15)=1/5â—(250â’50+15) =215/5=215/5 =43m/s.</span>
6 0
1 year ago
Read 2 more answers
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