Answer:
so initial momentum is 0.22kgm/s
Explanation:
m1=0.20kg
m2=0.30kg
initial velocity of m1=u1=0.50m/s
initial velocity of m2=u2=0.40m/s
total momentum of the system before collision
Pi=m1u1+m2u2
Pi=0.20kg×0.50m/s+0.30kg×0.40m/s
Pi=0.1kgm/s+0.12kgm/s
Pi=0.22kgm/s
Answer:
The story he tells about the cave could have influenced different modern day ideas. Some examples might include religion, abuse, and imprisonment.
Explanation: :)
Answer:
(a)
vf_1s = 5.19 m/s
h_1s = 10.095 m
vf_4s = 24.23 m/s
h_4s = 4.49 m (below railing)
(b)
vi = 9.9 m/s
(c)
t = 1.53 s
h = 34.41 m
Explanation:
(c)
First, we will use the 1st equation of motion to find the time to attain the highest point:
where,
t = time to attain maximum height = ?
vf = final velocity = 0 m/s (ball momentarily stops at highest point
vi = initial velocity = 15 m/s
g = - 9.81 m/s (for upward motion)
<u>t = 1.53 s</u>
Now, for the height attained we will use the 2nd equation of motion:
<u>h = 34.41 m</u>
(b)
using the 3rd equation of motion for a height of 5 m:
<u>vi = 9.9 m/s</u>
<u></u>
(c)
At t = 1 s:
<u>vf_1s = 5.19 m/s</u>
<u></u><u></u>
<u>h_1s = 10.095 m</u>
<u></u>
At t = 4 s:
Since the ball covers the maximum height of 34.41 m in 1.53 s and then starts moving downward.
Therefore for the remaining 4 s - 1.53 s = 2.47 s, the initial velocity will be 0 m/s at the highest point and the value of g will be positive due to downward motion.
<u>vf_4s = 24.23 m/s</u>
<u></u><u></u>
now, for the position with respect to railing:
<u>h_4s = 4.49 m (below railing)</u>
<u></u>
Answer:
James Webb has been designed to focus on the infrared part of the spectrum from 0.6 (red light) to 28 microns (infrared). This means it won't be able to see in ultraviolet light like Hubble, but will be able to focus on infrared bright objects like extremely distant galaxies.