Answer:
42 Hz
Explanation:
Given,
Speed ( v ) = 210 m/s
Wavelength ( λ ) = 5 m
To find : Frequency ( f ) = ?
Formula : -
v = f λ
f = v / λ
= 210 / 5
f = 42 Hz
Answer:
a)
b)
c)
Explanation:
Given:
- mass of the object,
- height of the object above the spring,
- spring constant,
a)
When the object is dropped onto the spring whole of the gravitational potential energy of the mass is converted into the spring potential energy:
is the compression in the spring
b)
When there is a constant air resistance force of 0.6 newton then the apparent weight of the body in the medium will be:
Now the associated gravitational potential energy is converted into the spring potential energy:
c)
On moon, as per given details:
Answer:
The mechanism of energy transport through a medium involves the absorption and reemission of the wave energy by the atoms of the material. When an electromagnetic wave impinges upon the atoms of a material, the energy of that wave is absorbed.
Answer:
(A) Like all objects, the Sun emits thermal radiation with a spectrum that depends on its temperature, and the Sun's surface temperature is just right for emitting mostly visible light.
Explanation:
The temperature of an object is a direct measurement of the energy of motion that absorbs all of the radiation that it receives (that is, it does not reflect any light, nor but many objects (stars included) behave approximately like blackbodies. Therefore, based on the location or the composition of the object, such as the Sun, it emits a spectrum of visible light
Answer:
0.75 second
Explanation:
The equation is
Let t be the time when it is at 73 feet. Substitute, h = 73 in the above equation and then find the value of t.
Take positive sign
t = 0.75 second