Answer:
Mass of the skater, m = 72.75 kg
Explanation:
It is given that,
Radius of the circular path, r = 31 m
Speed of the skater, v = 14 m/s
Centripetal force, F = 460 N
We need to find the mass of the skater. It can be determined using the formula of centripetal force. It is given by :
m = 72.75 kg
So, the mass of the skater is 72.75 kg. Hence, this is the required solution.
B = 53°
Reason: Opposite angles
A = 37°
Reason: Sum of angels on a straight line = 180 so 180-90-53 = 37°
C = 90°
Reason: Right angles = 90°
D = 37°
Reason: Sum of angels on a straight line = 180 so 180-90-53 = 37°
Answer:
Explanation:
Because the total energy available to the ball doesn't change whatsoever during its entire trip from the window to the ground,
TE = KE + PE which says that the total energy available to a system is equal to the kinetic energy of the system plus the potential energy, and that this value will not ever change (because energy cannot be created or destroyed. Sound familiar?) If the ball is being held still before it is dropped from some height off the ground, it is here that the total energy can be determined, and that total energy at this point is all potential, since the ball is not moving while someone is holding it and getting ready to drop it. The SECOND it starts to fall, the potential energy begins to be converted to kinetic. As the potential energy is losing value, the kinetic is gaining it at the same rate (again, energy doesn't just disappear; it has to go somewhere. Here, it goes from potential to kinetic a little at a time). When the ball finally hits the ground, or an INSTANT BEFORE it hits the ground, the potential energy is 0 because the height of something on the ground has a height of 0. At this instant, right before the ball hits the ground, is where the KE is the greatest. All the energy at that point has been converted from potential to kinetic.
Long story short, choice B is the one you want.
psychoanalysis
Explanation:
Jackie's therapist is basically using the process of psychoanalysis to better help resolve her issues and solve her problems.
Psychoanalysis is therapeutic procedure developed by Sigmund Freud. As with other psychological processes, it focuses on the mind and not the body.
- In this process, a patient is made to lie back.
- The therapist sits behind and out of the line of vision of patient.
- They are made to say anything that comes in mind to them.
learn more:
Sigmund Freud brainly.com/question/10516771
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