Answer:
28 J
Explanation:
Mechanical energy is the sum of kinetic and potential energy in an object that is used to do work. In other words, it is energy in an object due to its motion or position, or both.
In physics, mechanical energy (Emech) is the energy associated with the motion and position of an object usually in some force field.
Therefore:
ME = KE + PE = 25 + 3 = 28 J
Answer: High pass filters, and in particular LC high pass filters are used in many RF applications where they block the lower frequencies and allow through higher frequency signals. Typically LC filters are used for the higher radio frequencies where active filters are not so manageable, and inductors more appropriate.
The average distance between the variable scores and the mean in a set of data is the standard deviation.
Answer:
1. 2.64 kJ 2. 50 W 3. 2.5 A
Explanation:
1. Energy transformed in the lamp, E = IVt where I = current = 0.22 A, V = voltage = 120 V and t = time = 100s
E = 0.22 A × 120 V × 100 s
= 2640 J
= 2.64 kJ
2. The rate at which energy is trans ferred to the resistor is the power.
Power, P = IV where I = current = 5.0 A and V = voltage = 10 V
P = 5.0 A × 10 V = 50 W
3. Since Power P = IV
Current through the heater I = P/V P = 30 W and V = 12 V
I = 30 W/12 V
= 2.5 A
