Explanation:
W = mg
m = 740g = 740/1000kg = 0.74kg
g = 15.6ms^-2
W = 0.74x15.6
W = 11.544 N
The
answer is: a. Skinner’s idea of language
<span>Skinner
was a psychologists and
one of the first behaviorists. In his language acquisition
theory, he states that language acquisition is an environmental and
social phenomenon; therefore, children acquire language through
operant conditioning, which includes stimuli control, reinforcement
(positive and aversive), and deprivation.</span>
Answer: well the time it takes to fall 100m is the same time it takes to travel 65m horizontally.
The time to fall vertically, t is sqrt(2d/g). [this comes from d = 1/2at^2]
so t = sqrt(2*100/9.8) = 4.52s.
The vertical speed at that time is g*t = 9.8*4.52 = 44.3m/s
The horizontal speed is the horizontal distance over the same 4.52s, = 65/4.52 = 14.4m/s.
so the final velocity is = sqrt(44.3^2 + 14.4^2) = 46.6m/s
Explanation: yes
Answer:
The required wavelength is 1.19 μm
Explanation:
In the double-slit study, the formula below determines the position of light fringes 
on-screen.
where;
m = fringe order
d = slit separation
λ = wavelength
D = distance between screen to the source
For the first bright fringe, m = 1, and we make (d) the subject, we have:
replacing the value from the given question, we get:
In the double-slit study, the formula which illustrates the position of dark fringes on-screen can be illustrated as:
The value of m in the dark fringe first order = 0
∴
making λ the subject of the formula, we have:
