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Stella [2.4K]
3 years ago
10

The normal force which the path exerts on a particle is always perpendicular to the _________________ tangent to the path. trans

verse direction radial line. normal direction.
Physics
1 answer:
Marianna [84]3 years ago
7 0
Tangent to the pathh.
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after singing for a few minutes the soloist rejoins the choir a second choir, consist of 90 additional singers then joins in eac
vredina [299]
If the soloist produces "x" decibels and the 10-person choir produces "y" decibels, combined they will produce "x+y" decibels. 

The second choir has 90 additional singers, we base our description on the first choir. If a 10-person choir produces "x+y" decibels, then the 90 person choir produces 10 (x+y) decibels. 
7 0
3 years ago
) A stone initially moving at 8.0 m/s on a level surface comes to rest due to friction after it travels 11 m. What is the coeffi
natali 33 [55]

Answer:

-0.3

Explanation:

F' = μmg ........... Equation 1

Where F' = Frictional force, μ = coefficient of kinetic friction, m = mass of the stone, g = acceleration due to gravity.

But,

F' = ma ............ Equation 2

Where a = acceleration of the stone.

Substitute equation 2 into equation 1

ma = μmg

dividing both side of the equation by m

a = μg

make μ the subject of the equation

μ = a/g............... Equation 3

From the equation of motion,

v² = u²+2as................. Equation 4

Where v and u are the final and the initial velocity respectively, s = distance.

Given: v = 0 m/s (to rest), u = 8.0 m/s, s = 11 m.

Substitute into equation 4

0² = 8² + 2×11×a

22a = -64

a = -64/22

a = -32/11 m/s² = -2.91 m/s²

substitute the values of a and g into equation 3

μ = -2.91/9.8

μ = -0.297

μ ≈ -0.3

4 0
3 years ago
A violin string E vibrates faster then another violin string G when bowed. Which string produced a sound with higher frequency?​
Lisa [10]

Violin string E

!!!!!!!!!!!!!!

5 0
3 years ago
Scientific observations should be reported with bias as long as they benefit a scientist's employer
Ira Lisetskai [31]
False, there are always pros and cons to research
8 0
3 years ago
6. A suitcase weighing 120 N sits on a counter 1.8 m high
Liono4ka [1.6K]

Answer:

<em>216 J</em>

Explanation:

h = 1.8

a = 9.8

m = 12.2

<em>GPE</em> = <em>HAM</em> = 216

6 0
2 years ago
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