B)
Two bodies with the same vibration frequency that are placed next to each other will exhibit sympathetic vibrations as one body causes the other to vibrate.
The equation to find power is
P = E / t
P is power, E is total energy transfered, and t is the time.
Now we can substitute the given values
P = 600 / 3
P = 200W
Therfoee the power is 200W
Explanation:
Group A: iron, silver and sodium
All elements in group occur naturally as metals and they are all solids
Group B: Neon, Oxygen, and Nitrogen
All elements in group B are all non-metals. They occur naturally as molecules of gases and cannot exist on their own except for Ne
Any non-metal will fit into B other examples are Copper, Gold, Potassium e.t.c
Learn more:
Metals and non-metals brainly.com/question/2758034
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Answer:
The efficiency of the system is 80%.
Explanation:
Given that,
Output force = 2000 N
Distance = 3 m
Input force = 250 N
Distance = 30 m
Suppose we need to find the efficiency of the system
We need to calculate the efficiency of the system
Using formula of efficiency
Put the value into the formula
Hence, The efficiency of the system is 80%.
Part a)
At t = 0 the position of the object is given as
At t = 2
so displacement of the object is given as
so average speed is given as
Part b)
instantaneous speed is given by
now at t= 0
at t = 1
at t = 2
Part c)
Average acceleration is given as
Part d)
Now for instantaneous acceleration
As we know that
at t = 0
at t = 1
now we have
At t = 2 we have
<em>so above is the instantaneous accelerations</em>