<span>λν=c
(wavelength x frequency = speed)
speed = 45 x 0.1
= 4.5 m/s</span>
Yes yes yes yes yes yes yes yes
In science and engineering, the weight<span> of an object is usually taken to be the force on the object due to gravity. It is calculated by multiplying the mass with the gravitational acceleration.
W = mg = 1700 (9.81) = 16677 N
Hope this answers the question. Have a nice day.</span>
No because you don’t learn about synthetic inventions yet in your first year
A and c
Because it defines the boundaries of the system