Answer:
5 m/s²
Explanation:
Acceleration = change in speed/time taken
20-5=15
15/3= 5 m/s²
Answer:
<em><u>Incomple</u></em><em><u>te</u></em><em><u> </u></em><em><u>ques</u></em><em><u>tion</u></em><em><u>!</u></em>
you have to provide mass to get acceleration
as Newton's 2nd law, force=mass×accln
now,here force toward D is 100N,if it hav mass m
then accln will be 100/m
The minimum initial speed of the dart so that the combination makes a complete circular loop after the collision is 58.5 m/s.
<h3>Minimum speed for the object not fall out of the circle</h3>
The minimum speed if given by tension in the wire;
T + mg = ma
T + mg = m(v²)/R
tension must be zero for the object not fall
0 + mg = mv²/R
v = √(Rg)
<h3>Final speed of the two mass after collision</h3>
Use the principle of conservation of energy
K.Ef = K.Ei + P.E
¹/₂mvf² = ¹/₂mv² + mg(2R)
¹/₂vf² = ¹/₂v² + g(2R)
¹/₂vf² = ¹/₂(Rg) + g(2R)
vf² = Rg + 4Rg
vf² = 5Rg
vf = √(5Rg)
vf = √(5 x 2.8 x 9.8)
vf = 11.7 m/s
<h3>Initial speed of the dart</h3>
Apply principle of conservation of linear momentum for inelastic collision;
5v = vf(20 + 5)
5v = 11.7(25)
5v = 292.5
v = 58.5 m/s
Learn more about linear momentum here: brainly.com/question/7538238
#SPJ1
Solution:-
As we know that,
It is given that the resistance of two conductors in parallel is 12 ohm and in series is 50 Ohm.
Given,
r1 = 12 Ohm
r2 = 50 Ohm
Let r1 and r2 be the unknown resistance.
(i).
When the resistances are in series combination.
It is given that:
r1 + r2 = 50 Ohm.
(ii).
When the resistances are in parallel combination.
As we know that,
=>1/r1 + 1/r2
=> r1r2/r1 + r2 = 1/R(say)
where R is given as 12 Ohm.
Therefore, r1 + r2 = 50 Ohm
and r1r2/r1 + r2 = 12 Ohm.
=> r1r2 = 12 × 50
=> r1r2 = 600
Also,
=> ( r1 - r2 )^2 = ( r1 + r2 )^2 - 4r1r2
=> ( r1 - r2 )^2 = 2500 - 4 × 600
=> ( r1 - r2 )^2 = 100
=> ( r1 - r2 )^2 = (10)^2
=> r1 - r2 = 10
From (i) and (iii), 2r1 = 60
Therefore, r1 = 30 Ohm and r2 = 20 Ohm.
B. They both can be constructive forces.
Both volcanos and wind can shape the landscape... volcanos using eruptions and lava, wind using wind erosion when it gets "windy".
Hope this helps.
r3t40
