A prolonged blast (lasting at least 4 seconds) from a vessel in the water is a warning to other vessels in the vicinity that there are vessels in the water that may be difficult to see.
Poor visibility could be due to fog. It is also likely that unseen vessels could appear suddenly around turns or bends, and that it ma not be safe to maneuver without colliding with the unseen vessel.
What should you do when you hear a blast?
a. Reply with a blast of your own to warn other vessels.
b. Slow down in order to better deal with low visibility or coming suddenly upon hidden stationary vessels.
Because they know physics :)
higher amplitude => higher potential energy => more to transform into kinetic energy => higher speed => higher range (distance)
B the goose with most mass
this is because momentum=mass x acceleration
so a larger mass will give a larger momentum ( acceleration stays constant)
Velocity of the sled is 3.2 m/s
Answer:
The bulb will not light up
- If the switch is open then the connection between the circuit broken and the bulb stops glowing
- The circuit needs to be closed and connected.
- The circuit is the closed path through which current flows.
- It consists of cell , battery , wires, resistors etc