B because it will not be any thing else
Same size as object should be the answer, it is a “plane” mirror
Answer:
True
Explanation:
Biosphere refer to regions of the earth(sphere) that supports life. It is made up of biotic and abiotic components. Its abiotic components are non-living components that support life and is made up of the lithosphere (the earth crust,mantle) , atmosphere(area of gases and air which is held by gravitational force) and the hydrosphere(all water bodies which includes ocean, sea, lakes, rivers etc).
Answer:
28.3 kg
Explanation:
Assuming the ground is level, the normal force equals the weight.
N = mg
277 N = m × 9.8 m/s²
m = 28.3 kg
Answer:
1.3m/s²
Explanation:
Given values in the first part: acceleration a, time t₁:
1) velocity v₀ 
2) height h₀ 
Given values in the second part: acceleration -g, time t₂:
3) height h 
Combining equations 1,2,3 and setting h to zero:

Solve for a with t₁ = 4s and t₂=2.1s:
