Answer:
a) 3.16s
b) 10m
Explanation:
Let g = 10m/s2. Gravity and normal forces acting on the box:
N = G = mg= 20*10 = 200 N
The static friction acting on the box is
Kinetic friction acting on the box is:
When the truck accelerates from rest, this acceleration would generate an inertia force on the box
Since the box is definitely moving with respect to the truck with a net force of
So then the net acceleration of the box with respect to the truck is
a) the distance to the rear truck is 5m, then the time it takes for the box to accelerate and reach that point is
b) The distance travelled by the truck when it starts from rest:
Answer:
The potential energy increases if the orbital radius increases.
Explanation:
The orbital radius of the electron increases means the distance from the nucleus of the hydrogen atom increase.
The nucleus is positively charged .
The potential energy is given by P.E = -
where Z is the atomic number
r is the radius
The negative sign indicates that the electron which is revolving is bound to nucleus.
As the radius and potential energy are inversely proportional it is clear that when <em>radius increase</em> the<em> potential energy become less negative </em>which means the potential energy increases when the orbital radius increase.
M = 10kg
P = 40 kg.m/s
V= 4m/s
Formula v = p/m
V= p/m
=4okg.m/s / 10kg
=4m/s
The electromagnetic waves are:
Radio waves
Ultraviolet waves
And Infrared waves
Hope i helped
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