Answer:
The magnitude of the torque due to gravity if it is supported at the 28-cm mark is 0.5 N-m.
Explanation:
Given that,
Mass of the meter stick, m = 0.3 kg
Center of mass is located at its 45 cm mark.
We need to find the magnitude of the torque due to gravity if it is supported at the 28-cm mark. Torque acting on the object is given by :

or

So, the magnitude of the torque due to gravity if it is supported at the 28-cm mark is 0.5 N-m.
The FIRST statement on the list is the definition of momentum, so that's the one that must be true.
Answer:
30,000 units, because total energy remains unchanged
Answer:
The right solution is "
".
Explanation:
Given that,
q = 0.50 nC
d = 900 mm
As we know,
⇒ 
By putting the values, we get
⇒ 
⇒ 
⇒
False it only melts when its thermal energy increases. plus an ice cube has no mechanical energy.