Answer:
Hank u so much out don't know how much this rally
Explanation:
Answer:
F = 614913.88 N
Explanation:
We are given;
Mass of pile driver; m = 1800 kg
Height of fall of pole driver; h = 4.6 m
Depth driven into beam; d = 13.6 cm = 0.136 m
Now, from energy equations and applying to this question, we can write that;
Workdone = Change in potential energy
Formula for workdone is; W = F × d
While the average potential energy here is; W = mg(h + d)
Thus;
Fd = mg(h + d)
Where F is the average force exerted by the beam on the pile driver while in bringing it to rest.
Making F the subject, we have;
F = mg(h + d)/d
F = 1800 × 9.81 × (4.6 + 0.136)/0.136
F = 614913.88 N
I think a obstetrician, since they specifically deal with pregnancy and birth. They would guide you through the entire pregnancy. Hope this helps :))
So is light, but we don't use light either to power anything, even though we do know how to capture them and extract their energy.
The reason we don't use sound or light as sources of energy is because the amount of energy in the sound and light that surrounds us is pitifully small ... in the milliwatts or microwatts, whereas the things we build and operate with oil or electricity need watts or kilowatts to function.
1 watt of sound will drive you out of the room and wake the neighbors, and 1 watt of light ... if it all enters your eye ... can permanently damage your sight.
Answer:
C.
Explanation:
The atomic number is derived from the number of protons in the atomic nucleus. The atomic number of bromine is 35, therefore it has 35 protons in its atoms.
