B. the object's speed and mass
Looking at the kinetic energy formula:
1/2mv^2 = Ek
It can be seen that the only two factors that affect the magnitude of the kinetic energy are mass and the object speed. Kinetic energy is also a scalar quantity so the direction is unnecessary.
It's C, angle of incidence is equal to angle of reflection
Answer:
"Changing the amplitude of a signal is straightforward: We just need to multiply each sample with some constant number. In the case of sine waves, if what we want is a wave with amplitude a, our wave function becomes y = a * Math.sin(x)."
Explanation:
Risk*
Answer:
Explanation:
The resistance of a wire is given by the equation:
where
is the resistivity of the material
L is the length of the wire
A is the cross-sectional area of the wire
In this problem, we have a wire of platinoid, whose resistivity is
The length of the wire is
L = 7.0 m
And its radius is
, so the cross-sectional area is
Solving for R, we find the resistance of the wire:
