: In general, metals feel colder or hotter to the touch than other materials at the same temperature because they're good thermal conductors. This means they easily transfer heat to colder objects or absorb heat from warmer objects
Answer:
σ =4.180×10^{-9} C/m^2
Explanation:
electric field due to non conducting sheet is
the force acting on the piece of Styrofoam
Eq= mg
⇒E= mg/q
now,
⇒
charge per unit area (in C/m2) on the plastic sheet σ =4.180×10^{-9} C/m^2
Answer:
Potential energy in the system = 1,500 J
Explanation:
Given:
Total energy of a system = 2,000 J
Kinetic energy = 500 J
Find:
Potential energy in the system
Computation:
Total energy of a system = Kinetic energy + Potential energy
2,000 J = 500 J + Potential energy in the system
Potential energy in the system = 1,500 J
Answer:
a)
b)
c)
Explanation:
From the question we are told that
Magnetic field strength
Distance traveled
Mass
Resistance
Gravitational acceleration
Because of perpendicularity
a)
Generally the direction of the current will be given as
Because it opposes increases of magnetic flux
b)
Generally the equation for induced EMF is mathematically given as
Generally the equation for induced current is mathematically given as
c)
Generally the the equation for force F at terminal speed is mathematically given as