Answer:
brainly.com/question/11872573
Explanation:
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Answer: 24.7 degrees Max
Explanation:
m*g = 3 * 9.8 = 29.4 N. = Wt. of book.
Fp = 29.4*sin A = Force parallel to the
plank.
Fn = 29.4*Cos A = Force perpendicular to
the plank.
Fs = u*Fn = 0.46*29.4*Cos A
Fp-Fs = m*a
29.4*sin A - 0.46*29.4*Cos A = m*0 = 0
29.4*Sin A = 0.46*29.4*Cos A
Sin A = 0.46*Cos A
Divide both sides by Cos A:
Sin A/Cos A = 0.46
Replace Sin A/Cos A with Tan A:
Tan A = 0.46
A = 24.7 degrees Max.
Microwaves are transmitted by Radio Waves.
Answer:
4374 km/h
Explanation:
The momentum of the 1500 kg object is given by:
where
m = 1500 kg is the mass
v = 1.62 m/s is the velocity
Substituting,
We know that the smaller object of mass m' = 2 kg has the same momentum, so we can find its velocity by re-arranging the same equation:
Now to convert into km/h, keep in mind that:
1 km = 1000 m
1 h = 3600 s
So, we find
Answer:
the answer is C. rocket 4.
Explanation:
it's the biggest amongst the four.
rocket one has an acceleration of 34.782...
rocket two has an acceleration of 22.429...
rocket three has an acceleration of 26.666...
rocket four has an acceleration of 36.923