Answer:
1-d
2- a
3-e
4-b
5-c
This is the correct sequence
It means that if you had a cubic meter of water it would weigh 1000 kilograms
Answer:
a) The magnitude of the force is 968 N
b) For a constant speed of 30 m/s, the magnitude of the force is 1,037 N
Explanation:
<em>NOTE: The question b) will be changed in other to give a meaningful answer, because it is the same speed as the original (the gallons would be 1.9, as in the original).</em>
Information given:
d = 106 km = 106,000 m
v1 = 28 m/s
G = 1.9 gal
η = 0.3
Eff = 1.2 x 10^8 J/gal
a) We can express the energy used as the work done. This work has the following expression:
Then, we can derive the magnitude of the force as:
b) We will calculate the force for a speed of 30 m/s.
If the force is proportional to the speed, we have:
Both objects have the same electrical charge. Opposite charges attract. And if they were neutral they would not do anything.
Name the element and explain why it is unusual:
a)A liquid metal
b)A non-metal that conducts electricity