Inertia is defined as the tendency of a body to preserve its state of rest or uniform motion unless acted upon by an external force.
When a bus at rest starts to move suddenly,the passenger move backward because of inertia of the passenger to remain in the state of rest .
To solve for the uncertainty of your mass in kilograms,
simply multiply your total mass with the percent uncertainty.
We know that 4% = 0.04, therefore:
uncertainty = 60 kg * 0.04
uncertainty = 2.4 kg
However since uncertainty covers the upper and lower
region, therefore correct answer must be:
<span>± 2.4 kg</span>
Answer:
a) F=0N
b) F=2N pointing to the ground.
c) F=2N pointing to the ground.
Explanation:
a) The apple is at rest at your hand. This is because the force of gravity is pulling the apple down with a force of 2N, but your hand is aplying to the apple an equal but opposite force of 2N that is the normal force, which points up. If we sum these forces: F=2N-2N=0N in the vertical axis. This null force has no preferred direction.
b) The only force acting over the apple is the force of gravity, which has a value of F=2N for this apple and always points to the ground.
c) Even if the apple is moving upwards, the only force acting on it is the force of gravity, which has a strength of F=2N for the apple and points always to the ground.
Answer:
Energy remain conserved while converting its form from one to another
Explanation:
As per the conservation of energy, energy always changes its form from one form to another and it is neither destroyed nor created. The total amount of energy always remains the same.
There are several forms of energy such as thermal energy, electrical energy, nuclear energy, electromagnetic energy, etc.
For example –
During any chemical reaction, form of one chemical changes into another. In this process some amount of chemical energy remains conserved while the deficit in total starting energy is released as heat and light energy