Answer:
20 kg
Explanation:
Kinetic energy=½*Mass * velocity²
4000= ½* m*20²
8000=400m
m=8000/400
m=20 kg
Answer:
Explanation:
"The speeds at which two meshed gears turn depend on the number of teeth on each gear" this statement is correct .
"If the driving gear has fewer teeth than the driven gear, the speed of the driven gear increases" this statement is false. In the later case speed of the driven gear decreases. If driving gear has 5 teeth and driven gear has 25 teeth , the for making one rotation of driven gear , driver gear has to make 5 rotations.
Answer:
Explanation:
Given that,
Mass of the object, m = 29 kg
Torsion constant of the wire, K = 1.14 N-m
Number of cycles, n = 98
Time, t = 74 s
To find,
The rotational inertia of the object.
Solution,
Relationship between the moment of inertia, time period and the torsion constant of the spring is given by :
Where I is the moment of inertia
K is spring constant
Let T Is the time period of oscillation, such that,
So, the rotational inertia of the object is .
The hardness
nail or fingernail
Answer:
living in rural areas or places most affected by climate change (like communities along the coast) relying on surrounding environment and natural resources for food, cultural practices, and income. coping with higher levels of existing health risks when compared to other groups.
Explanation: