Answer:
5 ms-2
Explanation:
F = ma
F = 100N
m = 20kg ( you should make sure the unit is kg before you answer the question)
100 = 20a
a = 100÷ 20
a = 5 ms-2
When the gold cube is immersed in mercury, the tension in the string in Newtons is 3.142N.
<h3>What is tension?</h3>
Tension is the force acting on the linear object like string, chain or rope due to pulling.
Volume of gold V = mass / density
V = 1.18 /19.3x 10³ =61.1 x 10⁻⁶ m³
Tension in the string after immersing will be
T = [ρ(Gold) -ρ(Hg)] g. V
T =[ 19.3x 10³ - 13.6 x 10³] x 9.81 x 61.1 x 10⁻⁶
T =3.416 N
Thus, the tension in the string is 3.42 N.
Learn more about tension.
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The movie Star Wars<span> is a space
opera interstellar epic which uses science and technology in its settings and storylines, although its main
focus is not necessarily on science.</span>
Many
elements in the films appear to defy simple laws of physics.<span>
One of which is the falling of spaceships when they are hit by a laser beam.
Experts said, this is one good example because without gravity in space, ships
should travel in the direction of the impact instead of dropping like a stone.</span>
<span>
</span>
The answer to the question being asked on what do you called when the movement of the bones around a fixed angle without lateral displacement is ROTATION. Rotation movement allows the bone to move in a single long axis without being displaced.
Answer:
0.0222T
Explanation:
Frequency (f) =90 rev/s
Voltage = 1.15 v
Radius of coil = 1.00cm
= 0.01m
No of turns of wire (N) = 291
ω = 2πf
ω = 2π(90)
ω = 180π
A(t)= πr².sin ωt
= π(0.01)². Sin180πt
= 0.0001π.sin180πt
Differentiate A(t) with respect to t
dA/dt = 0.0001π . 180π . cos 180πt
EMF = - NB(dA/dt)
B = EMF/N(dA/dt)
B = 1.15/ -291(0.0001π . 180π . cos 180πt)
At the moment of induced voltage, cos180π = 1
B = 1.15/ -291(0.0001π . 180π . 1)
B = 1.15/ -51.7
B = 0.0222 T
The strength of the magnetic field = 0.0222T