F = ma
6.25 N = 0.4 kg · a
a = (6.25/0.4) m/s² since N=kg·m/s²
a = 15.625 m/s²
The answer is c) 15.6 m/s²
(Note that the mass of the soccer player is irrelevant.)
<span>They both used charged particles in their experiments.</span>
Answer:
The objects can be distinguished by their weight instead of by mass.
Explanation
Because mass is constant, the two objects cannot be distinguished by mass.
However, gravitational acceleration varies in outer space. Therefore the heavier mass will register a higher reading on a weighing scale.
Note that an object of mass M weighs Mg, where g = acceleration due to gravity.
Answer:
Explanation:
Given
length of wire 
change in length 
mass of wire 
Young's modulus for silver 
load on wire 

change in length is given by

Where A=area of cross-section




also wire is the shape of cylinder so cross-section is given by





Answer:

Explanation:
Given:
mass of the boat, 
uniform speed of the boat, 
rate of accumulation of water mass in the boat, 
time of observation, 
The mass of the boat after the observed time:



<u>Now using the conservation of momentum:</u>


