They traveled for six hours and forty two minutes
Answer:
x = (mg-f)/k
Explanation:
there are three forces acting on cylinder in a tube, (1) force due to spring = -kx (2) force due to friction = f (3) force due to gravity.
we want to calculate an instant when all three forces acting on mass cancel and there is 0 net force and cylinder momentiraly comes to stop.
let's write it in mathematics.
kx+f-mg=0 (kx is positive because it is upwards and that is how we have setup our coordinate axis in this problem).
solving for x gives.
x = (mg-f)/k.
Answer:
Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.
Answer:
In hot gases , the atoms keeps colliding with each other and sometimes the energy liberated during collision takes the electron to a higher level,thus, .The object is a cloud of hot gas and finally the electron returns back emitting photon
The formulae for range and flight time for a given launch from ground level at angle θ are
<span>
R=<span><span><span>v2</span>sin2θ</span>g</span></span>
and
<span>
T=<span><span>2vsinθ</span>g</span></span>
these follow from the equations of motion and the parabolic/symmetric shape of flight without air resiatance
you can see that you will max out on range at
<span><span>
θ=<span>45o</span></span></span>
