The current I is defined as the amount of charge Q flowing through a certain point in a time t:
which can be rewritten as
so, by using this formula we can calculate the maximum amount of charge that can flow in the circuit. In fact, the maximum current is I=15 A, while the time is
so the maximum amount of charge is
Answer:
3.7 km/h
Explanation:
Let's call v the proper speed of the boat and v' the speed of the water in the river.
When the boat travels in the direction of the current, the speed of the boat is:
v + v'
And it covers 50 km in 3 h, so we can write
(1)
When the boat travels in the opposite direction, the speed of the boat is
v - v'
And it covers 50 km in 5.4 h, so
(2)
So we have a system of two equations: by solving them simultaneously, we find the value of v and v':
Subtracting the second equation from the first one we get:
So, the speed of the water is 3.7 km/h.
Answer: D. Energy is always conserved
Explanation: The law of energy conservation says that energy is neither created or destroyed, that it is only transferred or transformed from energy. "Conserved" means to maintain a constant overall total, which ties directly into the law of conservation (Energy can't be created nor destroyed, it can only be transferred or transformed from one form to another).
Answer:
Always store brake fluid in its original container and make sure the cap is very tight. ...
Never reuse brake fluid that has been drained from the brake system or even fresh fluid that has been allowed to sit in an open container, because brake fluid is quickly contaminated by dust, air, and moisture. Eyes: Eye contact will cause irritation. ...
Skin: Wash well with soap and water. ...
Ingestion: If a substantial quantity is ingested, obtain medical attention immediately.
Aspiration: Obtain medical attention immediately.
Inhalation: In the unlikely event of inhalation, remove from exposure and obtain medical attention.
Explanation:
1. it changes its velocity though out its circular motion because of its constant change in direction and also in its last 20 second due to a decrease in speed
2. 800kmhr^-1
v = s / t
= 2000/2.5
=800kmhr^-1
3. 1000kmhr^-1
v= s/t
= 2000/2
=1000kmhr^-1