Answer:
80 <em>B</em><em>r</em><em>i</em><em>e</em><em>f</em><em>l</em><em>y</em>
Explanation:
sorry yan lang po ang alam ko
<em>a</em><em>n</em><em>d</em><em> </em><em>t</em><em>h</em><em>a</em><em>n</em><em>k</em><em>s</em><em> </em><em>t</em><em>o</em><em> </em><em>p</em><em>o</em><em>i</em><em>n</em><em>t</em><em>s</em><em> </em><em>☺</em>
Action and reaction forces act on different objects in the interaction. Two equal and opposite forces acting upon the same object don't create a pair(action-reaction). That's why they don't cancel each other out.
At 60 mph. The 18-wheeler is moving slower, so its molecules have less kinetic energy.
Answer:
The lowest frequency is 95.6 Hz
Explanation:
The standing waves that can be formed in this system must meet some conditions, such as until this is fixed at the bottom here there must be a node (point without oscillation) and being free at its top at this point there should be maximum elongation (antinode)
For the lowest frequency we have a node at the bottom point and a maximum at the top point, this corresponds to ¼ of the wavelength, so the full wave has
λ = 4L
As the speed any wave is equal to the product of its frequency by the wavelength
v = f λ
f = v / λ
f = v / 4L
f = 2730 / (4 7.14)
f= 95.6 1 / s = 95.6 Hz
Answer:
Momentum, P = 15 kgm/s
Explanation:
We have equation of motion, v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken.
Initial velocity = 0 m/s, acceleration = 2 m/s², t = 1.50 s.
v = 0 + 2 x 1.5 = 3 m/s
Momentum, P = mv, where m is the mass and v is the velocity.
Here m = 5.00 kg
v = 3 m/s
Momentum, P = 5 x 3 = 15 kgm/s