If you look at a atom under a electron microscope you would use it
From the given information, the only thing we can tell is the wave's speed ... 21 m/s .
That also happens to be the product of it's (frequency) x (wavelength), but we can't say what either one alone is.
None of the items listed can be calculated without more information.
Just write a summary don't do the little details and don't explain everythinh
Answer:3m/s
Explanation:
mass(m)=50kg
Kinetic energy =225 joules
Kinetic energy=(m x (velocity)^2)/2
225=(50 x (velocity)^2)/2
Cross multiplying we get
225x2=50x(velocity)^2
450=50x(velocity)^2
Divide both sides by 50
450/50=(50x(velocity)^2)/50
9=(velocity)^2
Taking the square root of both sides we get
√9=velocity
3=velocity
Velocity=3m/s
Answer: a. gamma rays
Explanation:
Scientists are able to use gamma rays to determine the composition of planets and other celestial bodies.
Special equipment exists that can measure gamma rays emitted by atoms on a planet's surface when it is struck by cosmic rays thus enabling us (humans) to understand more of the universe.