Answer:
Option (c)
Explanation:
The rate of change of linear momentum is called force.
As the linear motion terms are analogous to the terms in rotational motion.
So, the rate of change of angular momentum is called torque.
Explanation:
10
/9 Ω
potential difference across the cell in open circuit is the emf of the cell.
Hence, emf E=2.2V
when, circuit is closed, potential difference across cell is given by V=E−Ir
And,
I= E/
R+r
Hence, V= E− Er/
R+r
⟹ V= ER/
R+r
⟹ 1.8= 2.2×5
/5+r
⟹9+1.8r=11
⟹ r= 2/ 1.8 Ω
⟹ r= 10/9 Ω
Explanation:
Step I: 1 day means 24 hours * 60 minutes * 60 seconds.
So 1 day have 86400 seconds.
Step I:
Now,
To calculate the travel distance 20,000m/s* 84600 is 1728000000m
Step Ill:
Now convert the meter in kilometer
Because 1 km = 1000 m
So, = 1728000000/1000 = 172800OKm
Newton's 2nd law of motion:
Force = (mass) x (acceleration)
= (1,750 kg) x (1.35 m/s²)
= 2,362.5 Newtons
(about 531 pounds)