Answer:
Weight = 3.924 N
Bouyant force = 2.5N
Apperent weight= 1.424N
Explanation:
Radius of the sphere = 0.0165 m
Volume of sphere = (4πr³)/3
Volume = 4.189*(4.49*10^-6)
Volume = 1.88*10^-5
For the weight.
Mass = density* volume
Mass = 2.14*10^4 *(1.88*10^5)
Mass = 0.4 kg.
Weight = mass * acceleration due to gravity
Weight = 0.4*9.81
Weight = 3.924 N
For the buoyant force Fb
Fb = volume * density of fluid* acceleration
Fb = (1.88*10^5)*1.36 × 10^ 4*9.81
Fb = 2.5N
For Apperent weight
True weight - buoyant force = Apperent weight.
3.924- 2.5N= 1.424N
Answer:
398.0 N = 89.74 pound force
Explanation:
Gravitational force:
R = 6371 km (Radius of the Earth)
At the surface, weight of the surface w =220 pounds = 978.61 N
2250 miles = 3621024 m
total distance from the center of the Earth
3621024 m + 6.371×10⁶ m = 9.99×10⁶ m
398.0 N = 89.74 pound force
Answer:
Image result for In covalent bonds what is being shared
A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
Explanation:
I think it might be D because all waves travel through a medium. I might be wrong though.
Black holes.
Although black holes don't have surface they are the only known object that has gravity that not even light can escape it.