Answer:
1.5min
Explanation:
To solve the problem it is necessary to take into account the concepts related to Period and Centripetal Acceleration.
By definition centripetal acceleration is given by
Where,
V = Tangencial velocity
r = radius
With our values we know that
Therefore solving to find V, we have:
For definition we know that the Time to complete are revolution is given by
D.
Reason: Speed = distance/time
While a bug fly in the air the weight of bug is counter balanced by the buoyancy force that is applied by air on the bug
This buoyancy force is net upthrust on the bug due to air which will help the bug to float in the air
This buoyancy force is given by the formula
here we know that
= density of air
V = volume of bug
so here we can say that upthrust of air is the force that bug will experience during his uplift
Answer:
15: Animals are able to detect the first of an earthquake's seismic waves—the P-wave, or pressure wave, that arrives in advance of the S-wave, or secondary, shaking wave. This likely explains why animals have been seen snapping to attention, acting confused or running right before the ground starts to shake.
16: No, it is not even remotely true. Microwaves cook food from the outside in, just like a regular oven. In fact, most of the cooking on the inside of the food, depending on its thickness, is done by heat conduction from the outside surfaces inwards, as the microwaves do not actually penetrate that far into the food.
Explanation:
It is given that,
Initial velocity of passengers, u =0
Final velocity of passengers, v = 45 mi/h = 20.11 m/s
Time taken, t = 2.2 s
We need to find the acceleration of the passengers on this ride. It can be calculated using the formula of acceleration as :
So, the acceleration of the passengers on this ride is . Hence, this is the required solution.