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zhuklara [117]
4 years ago
7

Dos masas están conectadas por una cuerda ligera que pasa por una polea sin rozamiento. Determine la aceleración de las masas y

la tensión de la cuerda si m Kg A  20 , m Kg B  50 y  0.20  K A Y B
Physics
1 answer:
Alexandra [31]4 years ago
5 0

Answer:A

Explanation:

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A golf ball starts with a speed of 2 m/s and slows at a constant rate of 0.5 m/s2, what is its velocity after 2 s?​
jeka57 [31]

Answer:

3m/s

Explanation:

Given parameters:

Initial speed  = 2m/s

Acceleration  = 0.5m/s²

Time  = 2s

Unknown:

Final speed  = ?

Solution:

To solve this problem, we apply the right motion equation;

     V  = U + at

V is the final speed

U is the initial speed

a is the acceleration

t is the time

      V = 2  + (2 x 0.5)

      V = 2 + 1

      V = 3m/s

8 0
3 years ago
Consider atmospheric air at 20°C and a velocity of 30 m/s flowing over both surfaces of a 1‐m‐long flat plate that is maintained
andrew11 [14]

Answer:

q = 8472.2 W/m

Explanation:

The solving or solution is given in the attach documents.

8 0
3 years ago
Explain the following statement: A concentrated acid is not necessarily a strong acid.
andrezito [222]
Concentration involves the relative amounts of solvent and solute in a solution, when strength is related to the extent to which a substance dissociates :))
i hope this is helpful 
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3 0
3 years ago
Read 2 more answers
If a lever lifts a load four times the effort applied and effort distance is 5 times the load distance, calculate its efficiency
noname [10]

Answer:

If effort distance was 4 times, efficiency would be 100%.

Since it takes 5 times for effort distance, efficiency drops to output/input

output is 1*F

input is (1/4*F)*5

so: F/1/5*F/4 = 4F/5F = .8 or 80%

8 0
3 years ago
When a wave moves, what happens to the medium? (Points : 1)
lakkis [162]

The correct option for the above statement is:

It moves up and down or back and forth, but it does not move forward with the wave.

Explanation:

Waves may be separated into crosswise and longitudinal waves in an exceedingly crosswise wave, the motion of the particles of the medium is at right angles (i.e., transverse) to the direction the wave moves. The particles on the surface of the traveling in circular ways as a wave moves across the surface.

3 0
3 years ago
Read 2 more answers
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