Answer: Energy stored:A spring compresses and returns
to its original shape when released.An object lifted with a pulley drops
down when the rope is released.
Energy not stored:A boat travels through water
(and air) and doesn’t move
after stopping.A box is pushed and doesn’t
move after the pushing stops.
Explanation:
We store energy in a spring when we compress it. When we release the spring, it returns to its original shape. The stored energy changes into kinetic energy. When a pulley lifts an object, the object gains stored energy. This stored energy changes to kinetic energy when the rope is released. A boat moving on water doesn’t store energy. Its kinetic energy is transformed to thermal energy because of drag. For the same reason, pushing a box on a table against friction doesn’t store energy either.
Answer:
When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights.
Explanation:
The wavelength of sound wave with frequency 770 Hz and speed of 290 m/s is equal to 0.3767 m
<h3>
Explanation:</h3>
The wave equation determining the relationship between speed, frequency and wavelength of a sound wave is given by:
<u>Speed of sound = Frequency of sound × Wavelength of sound wave</u>
v = n × λ .................................(1)
Given:
v = Speed of sound wave = 290 m/s
n = Frequency of sound = 770 Hz
λ = Wavelength = ?
From (1)
v = n × λ
Rewriting the equation for λ, we get
λ =
Substituting the values of v and n, we get
λ =
Hence, the wavelength of sound wave is equal to 0.3767 m
Answer:
all will help you!!! !!!!!!!