Answer:
U = 0.0207 J
Explanation:
We know that:
U =
where U is the potential energy, K the constant of the spring and x is the deformation.
so, the deformation is calcualted as:
x = 0.146m-0.116m
x = 0.03m
Finally, replacing the values of x and K, we get:
U =
U = 0.0207 J
Answer:
An earthquake is a natural rapid shaking of the tectonic plates caused by the release of stored energy in rocks
Explanation:
there are tectonic plates and the earthquake is caused by that energy the plates are always moving so it might get stuck in between each other and store the energy.
Sound travels at approximately 1,100 feet per second (766 miles per hour). Radio waves travel at the speed of light, which is approximately 186,000 miles per second. This means that in the time radio waves travel the length of a football field, light can travel further than all the way around the world.
Answer:
Reduce its weight
Explanation:
For an object on a flat surface, the maximum force of friction experienced by the object is given by:
where
is the coefficient of friction
W is the weight of the object
As we can see from the formula, there are two ways of reducing the friction:
- Decreasing --> this coefficient depends on the material and on the roughness of the surface, so this can be changed by changing the properties of the surface
- Decreasing W, the weight --> this can be done by reducing the mass of the object