Answer:
Explanation:
When the rock is immersed in unknown liquid the forces that act on it are shown as under
1) Tension T by the string
2) Weight W of the rock
3) Force of buoyancy due to displaced liquid B
For equilibrium we have
=
When the rock is suspended in air for equilibrium we have
When the rock is suspended in water for equilibrium we have
+ =
Using the given values of tension and solving α,β,γ simultaneously for we get
Solving for density of liquid we get
Answer:
A. 10 N
B. 20 N
C. 1,000 N
Explanation:
D. According to Newton's Third Law, in the simplest terms, each and every action (force) has an equal but opposite reaction. So when the air pushes out to the left, the pressure of the air being released propels the balloon to the right. Therefore, Newton's Third Law is followed in this scenario. That is the same case for the above three questions as well.
Answer:The typical power plant burns three units of fuel to generate just one unit of electricity. Renewable sources, such as wind and solar, burn no fuel and release no greenhouse gases. They are far more effective at converting energy into electricity, keeping waste minimal, while saving money
Explanation:
Answer:
Angle of refraction is 23° .
Explanation:
Answer:
There is a single pathway for charge flow in the circuit.
Explanation: