Answer:
d.Net force
Explanation:
The net force is the force which is the sum of all the forces acting on an object simultaneously.
Answer:
<em>N</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>SI</em><em> </em><em>unit</em><em> </em><em>of</em><em> </em><em>Newton</em>
The base unit of time in the metric and SI system is the second.
Answer:

Explanation:
Assuming no energy lost, according to the law of conservation of energy, the kinetic energy of the automobile becomes potential energy after the crash:

Here m is the automobile's mass, v is the speed of the car before impact, k is the "bumper" constant and x is the compression of the bumper due to the collision. Solving for v:

Answer: Partial pressure of nitrogen and xenon are 288mmHg and 548 mmHg respectively.
Explanation:
The partial pressure of a gas is given by Raoult's law, which is:

where,
= partial pressure of substance A
= total pressure
= mole fraction of substance A
We are given:


Mole fraction of a substance is given by:

And,

Mole fraction of nitrogen is given as:

Molar mass of
= 28 g/mol
Molar mass of
= g/mol
Putting values in above equation, we get:


To calculate the mole fraction of xenon, we use the equation:



Thus partial pressure of nitrogen and xenon are 288mmHg and 548 mmHg respectively.