Answer:
a) 7.848 m/s
b) 3.156 m
Explanation:
t = Time taken
u = Initial velocity = 1.75 m/s
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 9.81 m/s²
His highest height above the board is 0.156 m
b) Total height he would fall is 3+0.156 = 3.156 m
He is in the air for 0.8+0.18 = 0.98 seconds
a) His velocity when he hits the water is 7.848 m/s
Answer:
0.25 m
Explanation:
Electromagnetic waves consist of oscillations of the electric and the magnetic field, oscillating in a plane perpendicular to the direction of motion the wave.
All electromagnetic waves travel in a vacuum always at the same speed, the speed of light, whose value is:
Microwave is an example of electromagnetic waves.
The relationship between wavelength and frequency for an electromagnetic wave is:
where
is the wavelength
is the speed of light
f is the frequency
For the microwave in this problem,
So its wavelength is
Answer:
0.066m
Explanation:
Step one:
given
frequency =512 Hz
The speed of sound is 340.0 m/s.
Required
The wavelength
Step two:
the formula for wavelength is
substitute the given data
<span>An object is acted upon by a force of 22 newtons to the right and a force of 13 newtons to the left.
(1) 22 N to the right
(2) 13 N to the left.
magnitude = 22 - 13
magnitude = 9
Direction would be to the right.
So magnitude is 9N direction to the right.</span>