Answer:
Efficiency = 71%
Explanation:
Given the following data:
Output energy = 250 Joules
Input energy = 350 Joules
To find efficiency;
Substituting into the equation, we have;
Efficiency = 71.43 ≈ 71%
Therefore, the efficiency of the candle is 71 percent.
Answer:
c. Momentum is the product of mass and velocity
e. Momentum is a vector quantity
g. Momentum has unit of kgm/s
Explanation:
Linear momentum P
P = m .v
m =mass
v=Velocity
If mass take in kg and velocity is in m/s then momentum p will be in kg.m/s.
1. momentum is the product of velocity and mass.
2.Momentum is a vector quantity.
3.Momentum have kg.m/s unit.
So the following option are correct.
c. Momentum is the product of mass and velocity
e. Momentum is a vector quantity
g. Momentum has unit of kgm/s.
Note-
1.Joule is the unit of energy.
2.One-half the product of mass and the square of the object's speed is known as kinetic energy.
Answer:
planning charts used to schedule resources and allocate time is the correct answer
Explanation:
- Gantt Charts are a project planning tool used to track the projects from the start to endpoint.
- Gantt charts are used for the preparation and planning of the projects.
- By using Gantt charts we can assess how much time a project would take to complete and we can also determine resources required with the help of Gantt charts.
Velocity is height , speed is an object being propelled by force
Answer:
The dimensional formula of Young's modulus is [ML^-1T^-2]
