A → has the magnitude 12.0 m and is angled 60.0° counterclockwise from the positive direction of the x axis of an xy coordinate system. Also, B → = (12.0 m) i ^ + (8.00 m) j ^ on that same coordinate system. We now rotate the system counterclockwise about the origin by 20.0° to form an x′y′ system. On this new system, what are (a) A → and (b) B → , both in unit-vector notation?
A → has the magnitude 12.0 m and is angled 60.0° counterclockwise from the positive direction of the x axis of an xy coordinate system. Also, B → = (12.0 m) i ^ + (8.00 m) j ^ on that same coordinate system. We now rotate the system counterclockwise about the origin by 20.0° to form an x′y′ system. On this new system, what are (a) A → and (b) B → , both in unit-vector notation?
A
→
has the magnitude 12.0 m and is angled 60.0° counterclockwise from the positive direction of the xaxis of an xy coordinate system. Also,
B
→
= (12.0 m)
i
^
+ (8.00 m)
j
^
on that same coordinate system. We now rotate the system counterclockwise about the origin by 20.0° to form an x′y′ system. On this new system, what are (a)
A
→
and (b)
B
→
, both in unit-vector notation?
Please solve and answer this problem correctly please. Thank you!!
You're on an interplanetary mission, in an orbit around the Sun. Suppose you make a maneuver that brings your perihelion in closer to the Sun but leaves your aphelion unchanged. Then you must have
Question 2 options:
sped up at perihelion
sped up at aphelion
slowed down at perihelion
slowed down at aphelion
The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE ONLY TRIGNOMETRIC FUNCTIONS (SIN/TAN/COS, NO LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!
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