I think it’s a because if u do the math that’s what it says
Answer: Magnitude of the force exerted on the egg by the ground is 9.2N
Explanation:
Given the following :
Mass of egg (m) = 150g = 0.15kg
Height(h) from which egg is dropped = 3m
velocity of egg before hitting the ground (u) = 4.4m/s
Final velocity of egg (V) = 0
Time taken (t) = 0.072s
Magnitude of the force exerted on the egg by the ground can be found by applying Newton's 2nd law:
Momentum = mass × velocity
From Newton's second law:
Force = mass × change in Velocity with time ;
That is
F = m * ΔV / t
Inputting our values
F = 0.15 * (4.4 - 0) / 0.072
F = 0.15 × (4.4 / 0.072)
F = 0.15 × 61.11
F = 9.16N
F = 9.2N
Answer:
Explanation:
Let T be the temperature of an object at time t , then
dT / dt will be rate of change of temperature
According to newton's law of cooling
dT / dt = k ( T - T₂ )
where T₂ is temperature of surrounding , T is temperature of object , k is a constant .
dT / dt = k ( T - T₂ )
Given k = .4 , ambient temperature T₂ = 68⁰C
dT / dt = .4 ( T - 68 )
dT / ( T - 68 ) = .4 dt .
This is required differential equation .
Answer:
a star in andromeda
Explanation:
all of the other objects are in the milkyway (where we are) and the andromeda galaxy is 2 million light years away from us