Answer:
Yes
Explanation:
Non uniform acceleration is any acceleration that is not constant.
If you look at the graphs I have drawn in the above picture, the first two graphs shows a uniform acceleration.
The first graph is a positive acceleration, which means that the object is moving faster and faster at a constant rate. The second graph shows a deceleration, or negative acceleration, which means that the object is moving slower and slower at a constant rate.
For velocity- time graphs, acceleration can be seen by its gradient. So if the slope of the graph doesn't change, it has a uniform acceleration.
Graph 3 shows zero acceleration since the object is moving at a constant velocity (or speed). Thus, the object does not acceleration.
Graphs 4-7 shows a non uniform acceleration.
In graph 4, the object has a decreasing acceleration since the gradient of the graph is decreasing. This can be seen by the slope getting gentler and gentler.
Graph 5 shows an increasing deceleration, since the graph is getting steeper and steeper and the velocity is decreasing with time.
Graph 6: increasing acceleration
Graph 7: decreasing deceleration
Answer:
A, I think its A but im not sure.
Explanation:
We know that tangential acceleration is related with radius and angular acceleration according the following equation:
at = r * aa
where at is tangential acceleration (in m/s2), r is radius (in m) aa is angular acceleration (in rad/s2)
So the radius is r = d/2 = 1.2/2 = 0.6 m
Then at = 0.6 * 5 = 3 m/s2
Tangential acceleration of a point on the flywheel rim is 3 m/s2
Answer:
(a). The rms load current is 1.08 A.
(b). The rms primary current is 0.108 A.
Explanation:
Given that,
Primary voltage = 120
Secondary voltage = 12
Load = 10 ohm
We need to calculate the number of turns in primary and secondary coil
Using formula of voltage
Put the value into the formula
We need to calculate the resistance
Using formula of resistance
Put the value into the formula
We need to calculate the current in primary coil
Using formula of current
We need to calculate the current in secondary coil
Using formula of current for secondary coil
Put the value into the formula
Hence, (a). The rms load current is 1.08 A.
(b). The rms primary current is 0.108 A.
Answer:
Rise in temperature will be
So option (c) will be the correct answer
Explanation:
We have given solar radiation on the panels
25 % of the conversion efficiency = 25 % 1000 = 250
Area is given
So radiated power
Time is given t = 1 hour = 3600 sec
So energy
Mass of water m = 30 kg
And
So rise in temperature
So option (c) will be the correct option