Answer:
29865.31 m/s
Explanation:
Radius of the Earth orbit if it is assumed to be circular = 1.5×10¹¹ m = r
<em>Circumference of the orbit = 2πr</em>
<em>= 2π×1.5×10¹¹</em>
<em>= 3π×10¹¹ m</em>
Time taken by Earth to complete one rotation around the orbit = 365.25 days
<em>Converting to seconds we get</em>
<em>365.25×24×60×60</em>
<em>= 31557600 seconds</em>
Velocity of Earth
∴ The average speed of Earth in its orbit is 29865.31 m/s
I cannot fully answer this question because you have not specifically defined who Clark is. If I knew his full name I might be able to help you more
The so-called greenhouse effect is observed only in houses painted green, and even there, only between the hours of 2PM - 4PM local time on Thursday afternoon.
Answer:E
=
252
J
Explanation:
The total mechanical energy of an object or system is given by:
E
m
e
c
h
=
K
+
U
Where
K
is the kinetic energy of the object and
U
is the potential energy of the object. The carriage, sitting motionless at the top of the hill, has only potential energy in the form of gravitational potential energy.
Gravitational potential energy is given by:
U
g
=
m
g
h
Where
m
is the mass of the object,
g
is the gravitational acceleration constant, and
h
is the height of the object above some specific reference point, in this case the ground
21
m
below.
The weight of a stationary object at the surface of the earth is equal to the force of gravity acting on the object.
W
=
→
F
g
=
m
g
We are given that the carriage weighs
12
N
, therefore
m
g
=
12
N
.
U
g
=
12
N
⋅
21
m
⇒
U
g
=
252
N
m
=
252
J
Answer link
Explanation: