Answer:
7.92 m/s
Explanation:
= Mass of raindrop = 
= Mass of mosquito
= Initial Velocity of raindrop = 8.1 m/s
= Initial Velocity of mosquito = 0 m/s
= Velocity of center of mass
For elastic collision
Hence, the velocity of the attached mosquito, falling immediately afterward is 7.92 m/s
"<span>(2) They transfer energy" is the best option from the list regarding the </span>characteristics of both sound waves and <span>electromagnetic waves, but these energies are different. </span>
To find the number of neutrons in an atom, what we must do is to follow the following steps:
1) Find the element in the periodic table.
2) Find the atomic number of the element. The atomic number is the number of protons of a single atom of that element.
3) Find the atomic weight of the element.
4) Finally, we look for the number of neutrons. For this, we follow the following relationship:
Atomic weight - number of protons = number of neutrons.
Answer:
To find the number of neutrons in an atom, you would subtract:
B.) atomic number from mass number
Answer:
f=8.219*10^{8}Hz
Explanation:
We are going to use the formula v=fλ
Where v= velocity of radio waves
f= frequency
λ= wavelength of wave
- radio waves are electromagnetic waves and as such they have the speed of light which is 3*10^{8}m/s.
- also when a wave travels from one medium to another, the wavelength changes while the frequency remains the same.
- calculating for the frequency of the wave in air also gives us the frequency in the window glass.
f=\frac{v}{λ}
v=3*10^{8}m/s.
λ=36.5 cm = 36.5/100= 0.365m
f=\frac{3*10^{8}m/s.}{0.365m}
f=8.219*10^{8}Hz
Answer:
torque = 3.897 N-m
Explanation:
given data
force = 300 N
angle = 60 degree
distance = 15 cm
to find out
torque
solution
we will apply here torque formula that is given below
torque = force × sinθ × distance ...................1
put here all these value in equation 1
we get torque
torque = force × sinθ × distance
torque = 300 × sin60 × 1.5 ×
torque = 300 × 0.8660 × 1.5 ×
torque = 259.80 × 1.5 ×
torque = 389.711 ×
torque = 3.897 N-m
