The angular diameter can be
calculated by using the formula,
Angular diameter = 57.3 x
physical diameter / distance.
The physical diameter of the
sun = 1.4 x 10^6 km.
The minimum distance of Mars
from Sun = 205 x 10^6 km
The minimum angular diameter of
the Sun as seen from Mars is:
Angular diameter = 57.3 x
physical diameter / distance = 57.3 x (1.4 x 10^6 km / 205 x 10^6 km) = 0.39
degrees.
The maximum distance of Mars
from Sun = 249 x 10^6 km.
The maximum angular diameter
of Sun as seen from Mars is,
Angular diameter = 57.3 x physical
diameter / distance = 57.3 x (1.4 x 10^6 km / 249 x 10^6 km) = 0.32 degrees
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Answer:
The specific charge is defined as a charge by mass ratio i.e e/m. The charge on an electron (e) = 1.602 X 10-19C. The mass of the electron (m) = 9.1×10−31Kg.
Answer:
75m
Explanation:
Given parameters:
Distance covered by the boat = 15m
Time taken = 8s
Unknown:
Distance covered by the boat in 40s = ?
Solution:
To solve this problem, we need to find the speed of the boat first;
Speed = 
Insert the parameters and solve;
Speed =
m/s
Now;
The boat will travel;
Distance = speed x time
Distance = x 40 = 75m
Answer:
ΔU=0.8834 Btu
Explanation:
Given data
Area of piston A=40 in²
The weight W=100 lbf
Atmospheric Pressure P=14.7 lbf/in²
Work added E=3 Btu
The change in elevation Δh=1 ft =12 inch
To find
Change in internal energy of the gas ΔU
Solution
For Piston
ΔPE=| W+(P×A)×Δh |
ΔPE=| 100+(14.7×40)×12 |
ΔPE=8256 lbf.in
ΔPE=8256×0.000107
ΔPE=0.8834 Btu
From law of conservation of energy then ,the charging in the potential energy of the piston is made by exerting force by gas
Wgas= -ΔPE
Wgas= -0.8834 Btu
For the gas as a system and by applying first law of thermodynamics
Q-W=ΔU
0-(-0.8834 Btu)=ΔU
So
ΔU=0.8834 Btu
