Answer:
5.71 g/cm^3
Explanation:
Recall that density is defined as:
density = mass/volume
therefore in our casewe have:
density = 20 g / 3.5 cm^3 = 5.71 g/cm^3
Answer:
40 m/s North
Explanation:
m = 10 kg
u = 4 m/s North = 4 j
m1 = 5 kg
v1 = 8 m/s west = - 8 i
m2 = 4 kg
v2 = 10 m/s east = 10 i
m3 = m - m1 - m2 = 10 - 5 - 4 = 1 kg
Let the velocity of third fragment is v3 = v
Using the conservation of momentum
m x u = m1 x v1 + m2 x v2 + m3 x v3
10 x 4 j = 5 x (- 8i) + 4 x 10 i + 1 x v3
40 j = - 40 i + 40 i + v3
v3 = 40 j
Thus, the third fragment moves in the direction of north with velocity 40 m/s
Answer:
2.to every action there is always an equal & opposite reaction
Here's a explanation!
Let's solve your equation step-by-step.
Step 1: Multiply both sides by x.
(Divide both sides by 4).
Take the root.
ANSWER!
Hopefully, this helps you!!