Answer:
Required KVP = 86 KVP (Approx)
Explanation:
Given:
Current KVP = 75 KVP
Find:
KVP required to double exposure
Computation:
According to 15% rule of KVP,
15% change increse in KVP required to get double exposure.
So,
Required KVP = Current KVP + Current KVP(15%)
Required KVP = 75 KVP + 75 (15%)
Required KVP = 75 KVP + 11.25 KVP
Required KVP = 86.25 KVP
Required KVP = 86 KVP (Approx)
It's b because science is based on
empirical
evidence,while pseudoscientific doesn't
Answer:
: velocity of the crate after the person has pushed the crate a distance of 6 meters
Explanation:
Crate kinetics
Crate moves with uniformly accelerated movement
v f²=v₀²+2a*d (formula 1)
d:displacement in meters (m)
v₀: initial speed in m/s
vf: final speed in m/s
a: acceleration in m/s²
Known data
v₀=0 The speed of the crate is equal to zero because part of the rest.
a= 2m/s²
d= 6m
Distance calculating
We replace data in the Formula (1)
v f²=0+2*2*d
v f²=2*2*6
v f²=24
Answer:
D. Reaches a maximum height of 439.20 meters in 9.2 seconds.
Explanation:
Given
h = –5t²+ 92t + 16
then
h' = 0 when the boulder reaches its maximum height
(–5t²+ 92t + 16)' = - 10t + 92 = 0
⇒ t = 92/10
⇒ t = 9.2 s
the maximum height will be
h = –5(9.2)²+ 92(9.2) + 16
h = 439.20 m
