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ELEN [110]
3 years ago
7

As she was trying to study, Tanisha asked her roommate to lower the radio. Her roommate had turned the radio up originally from

a volume level of 14 to 15, which was just enough for Tanisha to detect. Tanisha's roommate turned the radio back down to 14 after Tanisha asked her to lower it, which satisfied Tanisha. This is probably the result of: ________.
Physics
1 answer:
STatiana [176]3 years ago
4 0

Answer:

just-noticeable difference

Explanation:

Using principles of psychology and physics, a branch of experimental psychology called psychophysics has been created. This field is focused on the sensation, the sense and the perception of stimuli. Within this branch it has been called just-noticeable difference to the amount that must be changed of some stimulus so that this difference is noticeable, that is to say, the threshold at which the change is perceived.

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a boat traveling at a speed of 1.63 m / s has a kinetic energy of 52000 J what is the mass of the boat
BARSIC [14]

Answer:

39,098‬ kg

Explanation:

KE = .5 * m * v^2

52000=.5m * 1.63^2

52000=.5m * 2.66

52000/2.66=.5m

19,549 = .5m

19549/.5 = m

m=39,098‬ kg

5 0
3 years ago
What is the difference between velocity and speed /vector and scalar? ​
stepladder [879]

Answer:

Speed only defines the magnitude of how fast an object is moving from one point to another. This is a scalar quantity (Only Value)

Velocity defines both how fast an object is moving and also in what direction the object is moving. This is a vector quantity (Value + Direction)

7 0
3 years ago
A star rotates with a period of 37 days about an axis through its center. The period is the time interval required for a point o
vlabodo [156]

Answer:

T = 1.1285 10⁻² day

Explanation:

For this exercise the forces in the premiere are internal, so the angular momentum is conserved

         L₀ = I₀ w₀

         L  = I w

         L₀ = L

         I₀ w₀ = I w

Angular velocity and period are related

         w₀ = 2π / T₀

         w = 2π  / T

         

The moment of inertia of a sphere is

       I₀ = 2/5 M R²

       I = 2/5 m r²

If we assume that the mass of the star does not change in the transformation

We substitute

         2/5 M R² 2π/T₀ = 2/5 M r² 2π/ T

          R² /T₀ = r² / T

          T = (r / R)² T₀

          T = (6.1 / 2.0 104) 37

          T = 1.1285 10⁻² day

5 0
3 years ago
Is shelfstone above or below ground
dexar [7]
It believe it is under the ground because it normally is in tunnels
6 0
3 years ago
As one moves farther and farther from the Sun, the distance between adjacent planets is _____.
Alenkinab [10]
As one moves farther and farther from the Sun, the distance between adjacent planets is greater.
4 0
3 years ago
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