Answer:
-35 m/s
Explanation:
Momentum is conserved.
Momentum before firing = momentum after firing
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
Before the bullet is fired, the bullet and rifle have no velocity, so u₁ and u₂ are 0.
0 = m₁v₁ + m₂v₂
Given m₁ = 0.7 kg, v₁ = 350 m/s, and m₂ = 7 kg:
0 = (0.7 kg) (350 m/s) + (7 kg) v
v = -35 m/s
The rifle recoils at 35 m/s in the opposite direction.
The answer is <span>nitrogen triodide
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please mark me brainliest answer.</span>
16.42 seconds will elapse between passing B on the way up and coming back to B on the way down.
<h3>What is the definition of Angular Speed? </h3>
The rate of change of angular displacement is defined as angular speed, and it is stated as follows:
ω = θ t
Where,
θ is the angle of rotation,
t is the time
ω is the angular velocity
Given data;
sin a = 2/5
a=sin(2/5)
a=23°
The linear velocity is the product of the angular velocity and the length.
The times between the two points are found as;
Hence, the time between passing B on the way up and returning to B on the way down will be 16.42 sec.
To learn more about the angular speed refer to the link;
brainly.com/question/9684874
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Answer:
false statement are C , F , D.
Explanation:
false statement are C , F , D.
a) triple bond consist of two π bond and one sigma bond.
b) in double bond one bond is σ bond and one is π bond.
c) end to end overlapping is in σ bond and electron density in σ bond lie between the nuclei.
true statements are A, B , E.
π bond restrict rotation is correct and then the statement of bond formation between s orbital is σ bond.
Yo sup??
To solve this question we must learn that
pH=-log([H+])
in the question its given that
[H+]=10^(-8)
therefore
pH=-log(10^(-8))
=-(-8)log10
=8
Since pH>7 therefore its basic
Hence the correct answer is option A ie
A.8, basic
Hope this helps.
