Answer:
Her average speed is 5 miles per hour.
Explanation:
Average speed is the ratio of total distance travelled in particular time.
The park's pond is 0.5 miles around.
She can swim 20 laps, it means she can swim total = 20 × 0.5
= 10 miles.
Time taken by her to complete the track = 2 hour
Now, Average speed =
=
= 5 miles/hour.
Answer: The answer is density
Answer:
The store energy is 2113109.72 J.
Explanation:
Given that,
Radius = 0.11 m
Mass = 6.5 kg
Spins = 70000 rpm
Suppose we need to find how much kinetic energy is stored by the flywheel when it is rotating at its maximum rate
We need to calculate the moment of inertia
Using formula of moment of inertia
Put the value into the formula
We need to calculate the rotational kinetic energy
Using formula of rotational kinetic energy
Put the value into the formula
Hence, The store energy is 2113109.72 J.
Answer:
The temperature coefficient of resistivity for a linear thermistor is
Explanation:
Given that,
Initial temperature = 0.00°C
Resistance = 75.0 Ω
Final temperature = 525°C
Resistance = 275 Ω
We need to calculate the temperature coefficient of resistivity for a linear thermistor
Using formula for a linear thermistor
Put the value into the formula
Hence, The temperature coefficient of resistivity for a linear thermistor is
Answer:
The the average magnitude of the force exerted on the ball by the floor N
Explanation:
Given:
Mass of ball kg
Initial speed
Rebound speed
Contact time interval sec
For finding the average magnitude of the force on the ball by the floor is given by,
Here
N
Therefore, the the average magnitude of the force exerted on the ball by the floor N