Answer:
15.29m/s
Explanation:
Using the law of conservation of momentum
m1u1+m2u2 = (m1+m2)v
m1 is the mass of the clown = 85kg
u1 is the velocity of the clown = 0m/s (fired out from rest)
m2 is the mass of the cannon = 480kg
u2 is the velocity of the cannon = 18m/s
Let v me the recoil speed of the cannon
Substitute into the formula
85(0)+480(18) = (85+480)v
0+8640 = 565v
v = 8640/565
v = 15.29m/s
Hence the recoil speed of the cannon is 15.29m/s
Answer: this is true
Explanation: another one is if it is disproved
When it comes to organisms that help speed up the decay of biomes, worms
are wonderful creatures. They take almost anything that falls to the
earth and slowly erode it. Fungi is another option.
Answer:
When the object is placed between centre of curvature and principal focus of a concave mirror the image formed is beyond C as shown in the figure and it is real, inverted and magnified.
Answer:
1. The change from a liquid state to a gaseous state: boiling (evaporation)
2. The change from a gaseous state to a liquid state: condensation
3. The change from a solid state to a liquid state: melting
4. The change from a liquid state to a solid: freezing
5. The change from a solid state to a gaseous state: sublimation
6. The change from a gaseous state to so solid: deposition
7. A change of state: phase change
Explanation:
<em>A change of state is a physical change a substance suffers, it changes it physically but not chemically. In the image I added you can observe how these changes occur between the solid, liquid and gaseous states.</em>
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