We can solve the problem by using Ohm's law.
The resistance of the person, with dry skin, is
. In order to be felt, the current must be at least
Ohm's law gives us the relationship between current and voltage:
where
I is the current
R the resistance
V the voltage
Using the data of the problem, we find that the minimum voltage needed is
Answer:
If the mass of B is m and the temperature change is the same, the mass of B will be 2m.
Explanation:
Q = mcT
T = mc/Q
M = 4Q/2cT........... (1)
T = Q/mc
Plug this in equation 1.
M = 4Q/(2c × Q/mc) = 4Q ÷ 2Q/m = 4Q × m/2Q = 2m
Answer:
Resistance, 
Given:
V = 407.1 V
Current through the resistor, I = 0.850 mA = 
Time constant for the circuit, 
Solution:
Initially the capacitor is uncharged, the current in the circuit remains same.
Thus
At t = 0
the current in the circuit, I = 
Therefore,
Resistance, R = 
R = 
Now, for calculation of Capacitance, C:
Time constant for the circuit, 
Answer:
Many of these gases occur naturally, but human activity is increasing the concentrations of some of them in the atmosphere, in particular:
carbon dioxide (CO2)
methane.
nitrous oxide.
fluorinated gases.
Explanation:
Answer:
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
Explanation:
