things that float or sink
Answer:
f = 0.75 Hz
Explanation:
It is given that, a person is kicking there legs three times every four seconds. We need to find his frequency. The number of times an event is occurring is called frequency of an object. The frequency of a person is given by :
So, the frequency of the person is 0.75 Hz.
Answer:
1.3889 x 10¹¹ miles.
Explanation:
2 Years = 2 x 365 days = 730 days
2 years and 9 days = 739 days .
739 days = 739 x 24 = 17736 hours
2 years 9 days and 4.5 hours = 17736 + 4.5 = 17740.5 hours
17740.5 hours = 17740.5 x 60 x 60 = 63.865 x 10⁶ s
Distance travelled = velocity x time
2174.799173 x 63.865 x 10⁶ = 1.3889 x 10¹¹ miles.
Answer:
The object takes approximately 1.180 seconds to complete one horizontal circle.
Explanation:
From statement we know that the object is experimenting an Uniform Circular Motion, in which acceleration (), measured in meters per square second, is entirely centripetal and is expressed as:
(1)
Where:
- Period of rotation, measured in seconds.
- Radius of rotation, measured in meters.
If we know that and , then the time taken by the object to complete one revolution is:
The object takes approximately 1.180 seconds to complete one horizontal circle.
I would use a resistor rated for 1 W or more. Not less.