Help me again...(science)
1 answer:
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From the definition of entropy, the entropy change of an object is
where
Q is the heat absorbed
T is the absolute temperature
in our problem, we have Q=25.0 J, while the absolute temperature is (converting in Kelvin)
and so the entropy change is
where
Q is the heat absorbed
T is the absolute temperature
in our problem, we have Q=25.0 J, while the absolute temperature is (converting in Kelvin)
and so the entropy change is
Answer:
d = 1.30 mm
Explanation:
given,
wavelength of the light source (λ)= 502 nm
slits is separated (d) = ?
distance to form interference pattern(D) = 1.35 m
20 th fringe
y = 10.4 mm = 0.0104 m
now,separation between to slits
where y is the fringe width
d = 1.30 mm
separation between to slits is equal to d = 1.30 mm
Part A)
when ball will reach to highest point then it's speed will become zero
so we can use kinematics to find the time
Part b)
for finding the maximum height we can use another kinematics equation
so it will rise to 1.12 m from the point of projection
Part C)
Ball will take double the time which it take to reach the top point.
So here the time to reach the top is 2.23 s
so time taken by the ball to reach at same point after projection is given as
Since ball have reached to same point so the final velocity must be same as initial velocity
so we have
downwards
Part d)
when ball reached to the bottom
displacement of ball = -51.6 m
now by kinematics we have
by solving above equation we have
now for the velocity at that instant we have
so its velocity is 38.6 m/s downwards
Part e)
for the position of ball at t = 5.35 s we can use
so it is 23.1 m below the initial position from which it is thrown
now for the velocity we can say
so it will be moving downwards with speed 30.53 m/s