Answer:
The inverse of the distance between the plates.
The potential difference between the plates.
Explanation:
According to the <u>saving of the momentum</u> law, the total momentum <em>before </em>collision equals to the total momentum <em>after </em>collision
After collection, the 2 carts lock together, one body with a mass and velocity
from the definition of the momentum
thus
we calculate the velocity
Answer:
(a) its moment of inertia about its center is 0.002095 kgm²
(b) Applied torque is 0.071813 Nm
Explanation:
Given;
Radius of the grinding wheel, R = 8.5cm
Mass of the grinding wheel, m = 0.580kg
Part (a) its moment of inertia about its center
I = ¹/₂MR²
I = ¹/₂(0.58)(0.085)²
I = 0.002095 kgm²
Part (b)
Given;
initial angular velocity, ωi = 1500rpm = 157.1 rad/s
final angular velocity, ωf = 1500rpm = 157.1 rad/s
Initial torque, τi = I x αi
αi = ωi / t
αi = 157.1 / 5 = 31.42 rad/s²
τi = 0.002095 x 31.42
τi = 0.06583 Nm
Final torque, τf = I x αf
αf = ωf / t
αf = 157.1 / 55 = 2.856 rad/s²
τf = 0.002095 x 2.856
τf = 0.005983 Nm
Applied torque = τi + τf
= 0.06583 Nm + 0.005983 Nm
= 0.071813 Nm
Conduction involves the transfer of electric charge or (thermal energy)
Answer:
288N
Explanation:
Given parameters:
Mass of Cheetah = 12kg
Acceleration = 24m/s²
Unknown:
Force needed by the cheetah to run = ?
Solution:
The force needed by the Cheetah to run is the net force.
According to Newton's law;
Force = mass x acceleration
Insert the given parameters and solve;
Force = 12 x 24 = 288N