Answer:
Explanation:
In this question, we are asked to calculate the value of q(t) and i(t)
Please check attached image for solution:
In this problem, we are given that a ball is thrown upward and that it has an initial velocity of 5 m/s. Its path both on Earth and on the moon will be trajectory in nature. This is because while its horizontal velocity is maintained, its vertical velocity increases.
a) In this case the forces are the centrifugal force Fcp,
which is directed horizontally toward the wall; the force of static friction Ff
with the wall, directed upward; the normal force Fn by the wall, which is
directed away the wall; the force of gravity Fg, directed downwards. Then we
have that the horizontal forces are all equal in magnitude; similarly the
vertical forces are also all equal in magnitude.
b) The minimum coefficient s occurs when force of gravity
is equals the max friction force, that is
Fg = Ff,max
m g = s Fn
Also, the normal force has equal magnitude to the
centrifugal force:
m g = s Fcp
m g = s m w^2 r
g = s w^2 r
s = g / (r w^2)
With values: g = 9.81 m/s^2; r = 2.5 m; and w = 2pi *
0.60 = 3.77 rad/s; we find
s = 9.81 / (2.5 * 3.77^2) = 0.276
Explanation:
Explanation:
In the given question, there are two conditions.
Ram traveled 50 m in 30 seconds in a straight road.
Hari covers the same distance in the road; that means 50 m in 45 seconds
The formula for work w=\frac{d}{t}w=td
Ram's work w=\frac{50}{30}=1.66666w=3050=1.66666
Hari's work w=\frac{50}{45}=1.111w=4550=1.111
Ram is slower than Hari and the velocity of Ram is slower than Hari.
Ram has done less work than Hari.
Hence, Hari has done more work and he has more power than Ram.
Answer:
78kg
Explanation:
Let water density 
. We can calculate the buoyant force generated by water displaced by the air mattress from the volume of the mattress:
where l, w, t are the length, width and thickness of the mattress, respectively.
Let g = 10 m/s2. The buoyant force is then:
Let g = 10 m/s2. The gravity force acting on the mattress is
So the mattress can still support an additional gravity of 800 - 20 = 780N or 78kg
