Answer:
65.2 %
Explanation:
Let Q1 = Heat absorbed by the system
Q2 = Heat released by the system
e= (1 - (Q2/Q1)) x 100
e= (1 - (750/2150)) x 100
e= (1 - 0.348) x 100
e= 0.652 x 100
e= 65.2 %
Answer:
3.025 revolutions
Explanation:
To solve this question firstly we need to calculate the time t
Given the angular velocity and the angular acceleration
The time t = angular velocity/angular acceleration
Converting 50rpm to rad/s
= 50 × 2π /60
=1.67 rad/s
t = 1.67/0.46
t =3.63s
The wheel makes 50 revolutions in one minute
Therefore in 3.63s, it will make
3.63 × 50/60
= 181.5/60
=3.025 revolutions
Approximately 3 revolutions
Answer:
The switch within the closed circuit is opened and it stops the flow of current in a circuit.
Explanation:
- Current is defined as a flow of electrons in a system or a circuit.
- There are two basic things needed for current to flow in a system
- One is the electro-motive force and the other is the complete path for current to flow.
- If a switch in a closed circuit gets opened, it restricts the path of current flow.
- Thus it stops the current to be flowed through the circuit.
Answer: Your correct main answer is a submarine
Explanation:
Submarines are usually used for underwater warfare, and naval submarines are equipped with torpedoes, missiles, and high-powered nuclear weapons. The use of these along with their advanced tracking system helps to target ships and boats from below as well as other enemies. They can also work on targets that are on land.
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