Answer:
4. convert electrical energy into some other form of energy
Answer:
has free electrons
Explanation:
A conductor has free electrons while an insulator does not. Free electrons are electrons which are not bounded tightly to their parent atoms, and are free to move given the right conditions (ie. a strong EM field).
Answer
given,
Spring force constant = 120 N/m
mass of the wooden block = 0.27 Kg
coefficient of friction = 0.46
a) we know,
μ N = mg
0.46 x N = 0.27 x 9.8
N = 5.75 Newton
This should be the normal force on the block by the wall. Thus minimum spring force should be 5.75 newton.
F = k x d
k = spring constant,
d = compression in spring)
5.75 = 120 x d
d = 0.048 m
d = 4.8 cm
b) answer will change if the mass of block is doubled.
mass becomes = 0.54 kg
the normal force needed = 11.4 newton.
the compression becomes = 9.6 cm.
Answer:
k = 0.292 N / m
Explanation:
The glider with the spring forms a system with a simple harmonic movement, in this type of movement the angular velocity is given by
w = √ k / m
The angular velocity is related to the frequency and is related to the period
w = 2π f
f = 1 / T
We replace
2π / T = ra (k / m
T = 2π √ (m / k)
The period is the time of a complete oscillation, in this case the glider starts from the equilibrium point and returns for the first time, this corresponds to the middle of the period
½ T = 2.60 s
T = 2 2.60
T= 5.20 s
We clear the equation
T² = 4π² m / k
k = 4π² m / T²
Let's calculate
k = 4π² 0.200 / 5.20²
k = 0.292 N / m
In the middle the nucleus is thr brain of it and the electrons spin around the whole atom
