Answer:
Explanation:
To answer the question, we just need to consider the motion along the horizontal direction.
The component of the initial velocity of the ice skater along the x-direction is:
where u = 2.25 m/s is the initial velocity and is the angle.
The component of the final velocity of the ice skater along the x-direction is
where u = 4.65 m/s is the final velocity and is the angle.
The acceleration along the x-direction is given by
where
t = 120 s is the time
Substituting,
Answer: 0.313 rad/s
Explanation:
The equation that relates the velocity and the angular velocity in the uniform circular motion is:
(1)
Where is the radius of the space station (with a diaeter of 200m) that describes the uniform circular motion.
Isolating from (1):
(2)
On the other hand, we are told the “artificial gravity” produced by the cetripetal acceleration is , and is given by the following equation:
(3)
Isolating :
(4)
(5)
Substitutinng (5) in (2):
(6)
This is the angular velocity that would produce an “artificial gravity” of 9 .
the answer should be b) molecules because molecules are what creates a amino acid
-is made mostly of hydrogen and helium.
-will eventually run out of fuel and die.
-creates energy through nuclear reactions
Answer:
magnetic field = - 6.137 × T
Explanation:
given data
radio wave λ = 0.3 m
intensity I = 45 W/m²
time t = 0
time t = 1.5 ns
to find out
What is Bz
solution
we use here equation of intensity of radiation of electric field that is express as
intensity = .................1
here we know intensity 45 and c is 3 × m/s² and ∈o is 8.85 × C²/N.m² and E will be here
E = ...............2
E =
E = 184.15
and
E = .................3
184.15 =
= 6.137 × T
and in z axis magnetic field will be here as
B = ..............4
here k =
k = = 20.94
and
f =
f = =
so here
time t =
t = =
so ω =
ω =
ω = 6.28 ×
so now from equation 4
B =
B =
B = - 6.137 ×
so magnetic field = - 6.137 × T