Answer:
the answer to the question is a reflector
Newton's first law actually states that a force isn't needed to keep an object moving, so no.
Answer:
The strength of the field
Explanation:
The density of field lines of a field (e.g. gravitational field, or electric field) indicates the strength or magnitude of the field itself. In particular:
- The regions in which the field lines are closer to each other (more dense) are the regions where the field is stronger
- The regions where the field lines are more spread apart (less dense) are the regions where the field is weaker
For example, if we consider the electric field generated by a positive point charge, the electric field is radial (outwards from the charge) and the spacing between the lines increases as we move away from the charge: this means that the strength of the field increases as we move away from the charge.
Answer:
2.066 atm
Explanation:
PV = nRT increase T volume and n and R remain constant
30 C = 303.15 K 40 C = 313.15
P prop to T new P will be 313.15/303.15 * 2 atm = 2.066 atm
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
