Answer:
Explanation:
As we know that the block of wood is suspended by spring
Now at equilibrium position we have net force balanced on it
so we have
so we will have
now the time period of the spring block system for one complete oscillation is given as
now plug in all values in it
Now total time to complete 3 cycles is given as
Answer:
The total distance at 7 s is:
Explanation:
<u>Distance due to the force</u>
We can use second Newton's law to find the acceleration.
Now, using the kinematic equation we will find the distance during this interval of time. Let's recall that the initial velocity is zero.
In the second part of the motion, the object moves at a constant velocity, as long as there is no friction between the object and the floor.
First, we need to find the final velocity of the first interval
So the second distance will be:
Therefore, the total distance is:
I hope it helps you!
Answer:
When a custodian pushes a large crate across the gym floor, forces acting on the crate are the one applied by the custodian, frictional force acting in the opposite direction of motion acting between the surface of crate and floor and reaction force (normal force) acting in upward direction normal to the surface.
Answer 150000Hz
Explanation:
Given that:
Wavelength (λ)= 2000m
Frequency F = ?
Speed of light V = 3 x 10^8 m/s ( Recall that the speed of light is constant, with a value of 3 x 10^8 m/s)
So, apply V = F λ
3 x 10^8m/s = F x 2000m
F = (3 x 10^8m/s ➗ 2000m)
F = 150000Hz
Thus, the frequency of the light wave is 150000 Hz