Answer:
The speed of the rod is 2.169 m/s.
Explanation:
Given that,
Mass = 0.100 kg
Current = 15.0 A
Distance = 2 m
Length = 0.550 m
Kinetic friction = 0.120
(a). We need to calculate the magnetic field
Using relation of frictional force and magnetic force
Where, l = length
i = current
m = mass
Put the value into the formula
(b). If the friction between the rod and rail is reduced zero.
So,
We need to calculate the acceleration
Using formula of force
Put the value into the formula
We need to calculate the speed of the rod
Using equation of motion
Put the value into the formula
Hence, The speed of the rod is 2.169 m/s.
Answer:
6.03 m/s
Explanation:
<em>Average speed = total distance traveled/total time taken</em>
7 = 450 + 100/total time
total time = 550/7 = 78.57 s
<em>Speed of camel on the bicycle = distance/time</em>
25 = 100/time
time = 100/25 = 4 s
Total time = 78.57 s
Time spent riding bicycle = 4 s
<em>Time spent walking = total time - time spent riding bicycle</em>
= 78.57 - 4 = 74.57 s
<em>Speed of walking = distance walked/time spent walking</em>
= 450/74.57
= 6.03 m/s
Answer:
nuclear fusion
Explanation:
The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons
Answer:
The combinations are
1. C ,
2. C ,
Explanation:
The force between two charges q and Q is given by Coulomb's law.
The coulomb force is given by
Where, r be the distance between two charges
According to the question,
r = 15 cm, Q = C, q = C , F = 12 N
Force remains same, distance remains same
so the product of Q and q be same
The product of Q and q is
So other combination of charges are
1. C ,
2. C ,
I'd say the atmosphere plays a role in all of these but if I had to choose one it would be D