Answer: 62.86 coulombs
Explanation:
Resistance (R) = 210Ω
Voltage of battery (V) = 110V
total amount of charge (Q) = ?
Time (T) = 2 minutes
The SI unit of time is seconds so convert 2 minutes to seconds
(If 1 minute = 60 seconds
2 minutes = 2 x 60 = 120 seconds)
To get the total charge, first get the current (I) flowing in the circuit by applying the formula V = IR
110V = I x 210Ω
I = 110V/210Ω
I = 0.524 Amps
Then, apply the formula
Charge = current x time
i.e Q = IT
Q = 0.524 Amps x 120 seconds
Q = 62.86 coulombs
Thus, 62.86 coulombs of charge passes through the circuit.
A 40-gallon gas water heater can recover in about an hour. But a Recovery for a 40-gallon electric water heater takes about two hours.But I'm not so sure about a water tank
Answer:
c because you can lift a 2 pound dumbell
Answer:
4N
Explanation:
Given parameters:
Weight of stone when immersed in water = 18N
Weight of water displaced = 4N
Unknown:
Weight of the stone in air = ?
Solution:
To solve this problem, we employ the Archimedes' principles.
It states that the upward buoyant force on a body is equal to the weight of the fluid displaced.
The weight of the water displaced is equal to the weight of the body.
So, the weight of the stone in air = 4N
Acceleration = (velocity final-velocity initial)/ time
where
velocity final = 135 km/hr x 1 hr /3600 s x 1000m/1km
= 37.5 m/s
velocity initial = 35 km/hr x 1hr /3600 s x 1000 m/1 km
= 9.72 m/s
a) acceleration = 2.646 m/s^2
b) acceleration in g units = (2.646m/s^2)/(9.8m/s^2)
= 0.27 units
