Answer:
a. The Earth orbits the sun
Explanation:
Anchorage is the largest city in the United state of Alaska.
The major reason why we have seasons anywhere on the earth is the orbiting of the sun around the earth. Since the orbit of the earth is elliptical around the sun so it sometimes comes near the sun and sometimes far away from the sun due to which the average temperature of the earth keep varying during the entire year in phases of the distance from the sun.
When the earth is closer to the sun then the average temperature of the earth is relatively warmer than the average temperature when the earth is farther from the sun.
Tilt of the earth's axis also complements this phenomenon of season change but without the revolution of the earth around the sun in its elliptical orbit that could not be possible.
Answer:
D.
Explanation:
The answer is increased air pollution from cargo planes and ships.
Either the first one or the second one but i believe it’s the stricter on
Hi, your question was incomplete, hence I am writing down the complete question below.
Q)The displacement x of a particle of rest mass m0, resulting from a constant force m0g along the x-axis, is
x= c2/g{[1+(gt/c)2]power0.5-1}
including relativistic effects. Find the displacement x as a power series in time t. Compare with the classical result.
Answer:
<h3>
Please refer to the attachment below.</h3>
Explanation:
<h3>Please refer to the attachment below for explanation.</h3>
Answer:
1) v = 7.70 10³ m/s
, 2) F = 115 N and 3) (F/W)% = 90.2%
Explanation:
1) To solve the problem let's use Newton's second law where force is gravitational force and acceleration is centripetal
F = ma.
F = G m M / r²
a = v² / r
G m M / r² = m v² / r
G M / r = v²
Let's look for the distance is the distance from the surface of the has to the station 345 103 m plus the radius of the Earth
r = Re + 345 103
r = 6.37 10⁶ + 3.45 10⁵
r = 6.715 10⁶ m
Let's calculate the speed
v = √ (6.67 10⁻¹¹ 5.98 10²⁴ / 6,715 10⁶) = √ (59,399 10⁶)
v = 7.70 10³ m/s
The speed module is constant, so we can use the uniform motion relationships
v = d / t
The distance is the length of the circle
d = 2π r
d = 2π 6.715 106
d = 42.2 10⁶ m
Let's calculate the time
t = d / v
t = 42.2 10⁶ / 7.70 10³
t = 5.48 10³ s
2) Let's use the universal gravitation equation
F = G m M / r²
F = 6.67 10⁻¹¹ 13.0 5.98 10²⁴ /(6.715 10⁶)²
F = 11.5 10¹ N
F = 115 N
3) in this for we are asked the relationship is out with the weight of the body on earth
F / W = F / mg
F / W = 115 / (13.0 9.8)
F / W = 0.902
F / W% = 90.2%
