The atomic mass of this question is 10.811
Answer:
Explanation:
Given
radius of satellite orbit 
And orbital velocity is given by
where M=mass of earth 
centripetal acceleration is given
For Model airplane
Answer:
Let the volume of the cube be V and the fraction of cube outside water be f.
Thus, volume of ice inside water = volume of water displaced =(1−f)V
Under equilibrium,
Weight of ice = Weight of water displaced
⟹Vρ
ice
g=(1−f)Vρ
water
g
⟹(1−f)=
10
9
⟹f=
10
1
Thus, the percentage of volume outside water =10%
Answer:
Explanation:
Mass of satellite
M_s = 361 kg
Distance of satellite from moon
h = 147 km = 147,000m
Radius of the moon is
R_m = 1740 km = 1740,000m
Mass of the moon is
M_m = 7.36 × 10²² kg.
The kinetic energy is equal to the potential energy of the body to the surface of the moon from the conservation of energy.
K.E = P.E = mgh
Gravity on moon is g = 1.62 m/s²
K.E = 361 × 1.62 × 147,000
K.E = 8.597 × 10^7 J.
B. The gravitational potential energy can be calculated using
U = G•M_s × M_m (1/R_s - 1 / R)
R is the total distance from the centre of the moon to the satellite
R = h + R_m = 147 + 1740 = 1887km
R = 1,887,000 m
U = 6.67 × 10^-11 × 361 × 7.36 × 10²² (1/1,740,000 - 1/1,887,000)
U = 6.67 × 10^-11 × 361 × 7.36 × 10²² × 4.48 × 10^-8
U = 7.93 × 10^7 J
Then,
The total energy becomes
E = K.E + U
E= 8.597 × 10^7 + 7.93 × 10^7 J
E = 1.653 × 10^8 J
