Answer:
A. 1.96 m/s.
B. 0.35 m.
C. 0.15 m.
Explanation:
A.
Velocity of a wave,v = f * lambda
Where,
f = frequency of the wave
Lambda = wavelength
Given:
T = 2.8 s
f = 1/T
= 1/2.8
= 0.36 hz
Lambda = 5.50 m
V = 5.5 * 0.36
= 1.96 m/s.
B.
Amplitude, a = distance/2
= 0.7/2
= 0.35 m.
C.
Amplitude, a = 0.3/2
= 0.15 m.
Answer:
Same mass
Explanation:
5kg and 5kg are the same that's the explanation
<span>A magnetic field would be produced by a beam of (3) protons.
Although you could easily make a case for any of these four options (the question is pretty ambiguous), there can be only one correct answer, which is the third option, in this case.
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Answer:
1638.225ms-1
Explanation:
Mass of block= 16.1 Kg
Mass of bullet = 0.08Kg
Initial velocity of block= 0ms-1
Initial velocity of bullet= ????
Final velocity of bullet and wood= 8.1 ms-1
From Newton's third law:
Momentum before collision= momentum after collision
MAUA + MAUB= V(MA +MB)
(0.08×UA) + (16.×0)= 8.1(0.08+16.1)
0.08UA= 131.058
UA= 1638.225ms-1
Inertia is the tendency of an object to resist a change in its motion.