Answer:
Energy will be equal to 
Frequency will be equal to 
Explanation:
We have given frequency of the radar f = 10 GHz 
Speed of light 
Plank's constant 
So energy 
,here h is plank's constant and 
is frequency
So energy 
In second case we have given wavelength = 25 cm = 0.25 m
Wavelength is equal to 
So 
So frequency will be equal to
Answer:
Calculating Sound Intensity Levels: Sound Waves
Calculate the sound intensity level in decibels for a sound wave traveling in air at 0ºC
and having a pressure amplitude of 0.656 Pa.
Explanation:
Martin Cooper invented the cell phone
The correct option is out of the screen.
As the motion of positive charge is the direction of current in the wire. From the right-hand curl rule, the magnetic field direction will be outside the paper or the screen. As the <span>wire runs left to right and carries a current in the direction from left to right, the magnetic field lines will be outside the screen.</span>
Answer:
The person is on the Moon having a weight of 500 N. The acceleration of gravity on the Moon is approximately 1.6 m/s2. What is your his, which includes his space suit?
f= Force (of gravity)=500N
g=acceleration of gravity=1.6m/s^2
m=mass=312kg
m=f/a= 500N/1.6 m/s^2 = 500 (kg-m/1.6m/s^2) = 500/1.6kg = 312kg
his mass is 312kg
