Answer:
the velocity of the bullet-wood system after the collision is 2.48 m/s
Explanation:
Given;
mass of the bullet, m₀ = 20 g = 0.02 kg
velocity of the bullet, v₀ = 250 m/s
mass of the wood, m₁ = 2 kg
velocity of the wood, v₁ = 0
Let the velocity of the bullet-wood system after collision = v
Apply the principle of conservation of linear momentum to calculate the final velocity of the system;
Initial momentum = final momentum
m₀v₀ + m₁v₁ = v(m₀ + m₁)
0.02 x 250 + 2 x 0 = v(2 + 0.02)
5 + 0 = v(2.02)
5 = 2.02v
v = 5/2.02
v = 2.48 m/s
Therefore, the velocity of the bullet-wood system after the collision is 2.48 m/s
Answer:
b. They orbit around the Sun in a counterclockwise direction, when viewed from above the ecliptic plane.
Explanation:
All the objects of the solar system revolve around the Sun in a counterclockwise direction. The comet coming from the Oort's cloud will also follow the same kind of orbit. That is why it can't be a property to distinguish an Oort's cloud comet.
All other properties are correct to identify an Oort's cloud comet as the Oort's cloud is a considered a spherical cloud just outside the Solar system.
Rodney is working to identify a perpetrator. He knows that his friend, Jude, believes the victim's spouse is guilty. Hence, Rodney should avoid having unconscious bias.
Explanation:
The immediate context here is that, Rodney is in search of a perpetrator. He had beliefs on Jude, i.e. his friend. Jude further believes and knows about who the real culprit it. So there is no point for Rodney to undertake bias. He should avoid bias. The right context suggests that the victim is Innocent, but his spouse is the real culprit.
Rodney kind needs to consider this. To talk of formal terms, bias can be unconscious bias, or conformity bias etc. Before taking any discussion, we should think over everything. and we should avoid unconscious bias". Rodney should avoid unconscious bias.
Answer:
The angular displacement of the wheel is 45 radians
Explanation:
Given;
initial angular velocity, ω₀ = 20 rad/s
final angular velocity, ωf = 10 rad/s
time interval, t = 5
Angular acceleration is calculated as;
|α| = 2 rad/s²
Angular displacement is calculated as;
Therefore, the angular displacement of the wheel is 45 radians
