Answer:
R = 0.14 Ω
Explanation:
The resistance of a metal is given by the relation
R =
where ρ the resistivity is 5.6 10-8 Ω m, they also give the length and the cross section (area)
Let's reduce the magnitudes to the SI system
L = 200cm (1m / 100cm) = 2.00m
A = 8.0 10⁻⁷ m²
let's calculate
R = 5.6 10⁻⁸
R = 1.4 10⁻¹ Ω
R = 0.14 Ω
Answer: 4 kg
Explanation:
Ke=1/2MV^2
plug in the kinectic energy and solve for M
50=1/2(M) (5^2)
M= 4
Answer:
32.66 m/s
Explanation:
The potential energy stored in the spring will impart kinetic energy into the dart:
substitute the values:
A state in which an atom has more energy than it does at its ground state.
Hopes this helps!
Answer:
2 x 10⁻¹²F
Explanation:
Capacitance is defined as the ration of charge (q) on either plates to the potential difference V between them.
C =
Where q is the charge on the plates
V is the potential difference
From the given parameters:
Charge on plate, q = 2.0 x 10⁻¹⁰C
Potential difference across the plate = 100V
Unknown parameter:
Capacitance of the system = ? = C
Solution
Capacitance = 2.0 x 10⁻¹⁰/100 = 2 x 10⁻¹²F