Answer: = . /
Explanation:
The acceleration is
= − 0
In our case, the initial velocity has minus sign.
Thus,
=
− (−0)
=
+ 0
Substituting
0 =
2
(
+
0
) −
=
2
+
0
2
−
Thus,
0
2
=
2
−
So,
0 = −
= 8.62 −
12.9
8.25 = 7.06 m/s
Answer: = . /
"1 watt" means 1 joule of energy per second.
75 W means 75 joules/sec .
Energy = (75 Joule/sec) x (12 min) x (60 sec/min)
Energy = (75 x 12 x 60) (Joule-<em>min-sec</em> / <em>sec-min</em>)
<em>Energy = 54,000 Joules</em>
Answer: discplacement/change in time = average velocity.
Explanation:
There is a formula for velocity which is given above
Answer:
Speed,
Explanation:
Given that,
Radius of the neutron stare, R = 20 km = 20,000 m
Time taken by the Neutron star to rotate, t = 1 s
We need to find the speed of a particle on the star's equator. The total distance covered divided by total time taken is called speed of an object. Here,
v = 125663.70 m/s
or
So, the speed of a particle on the star's equator is . Hence, this is the required solution.
