Answer:
yes
Explanation:
this is simple
the horizontal line is adjacent
the vertical line is opposite
recall that cos x=adj/hyp
adj=hyp(cos x)
while opp=hyp(sin x)
Answer:
Explanation:
As we know that during the projection of rocket the total mechanical energy is conserved as there is no friction in it's motion
So we will have
now divide whole equation by mass of the object
now we can rearrange above equation to find gravitational constant
So above is the expression for gravitational constant G
Answer:
It remains constant
Explanation:
As we know that buoyant force on an object given as
Fb = ρ Vd g
ρ= Density of fluid
Vd=Volume displace by body
g=10 m/s²
Fb =buoyant force
So from above we can say that buoyant force does not depends on the depth. It only depends on the fluid density and volume displace by body.
So when rock gets deeper and deeper the buoyant force will remain constant.
It remains constant
Answer:
a) 1.57, 1.61
B 1.91x10^8m/s , 1.86 x 10^8m/s
Explanation:
Ok we know that refractive index is given as = sin i/ sin r
And i is the angle of incidence in the air and r is angle of refraction in the glass,
So we can sa y
for red light n = sin75/sin38.1 = 1.57
and for violet, n =sin75/sin36.7 = 1.61
So
(a) 1.57, 1.61
(b) we know that
Refractive index n = c/v,
where c is speed off light in air and v is speed of light in glass,
So , v = c/n
for red light v = c/1.57 = 1.91 x 10^8 m/s
and for violet light, v = c/1.61 =
1.86 x 10^8 m/s
Answer:
(a)
(b) P = 6309.6981 W
(c) Value in above part is described as minimum because there would have been power loss in the actual system to achieve this acceleration from the state of rest.
Explanation:
Given:
mass of car, m = 1140 kg
expression of acceleration,
where "t" is time in seconds
initial time,
final time,
(a)
We know,
Kinetic Energy
∴
(b)
We know,
Power
P = 6309.6981 W
(c)
Value in above part is described as minimum because there would have been power loss in the actual system to achieve this acceleration from the state of rest.