Thermal energy is added to four identical<span> 1.0 kg </span>samples of water<span> at room temperature. Which of the following </span>increases in each sample<span>? average charge of an electron; average density of </span>a<span> nucleus; average mass of </span>a<span> proton; average speed of </span>a<span> molecule. Your answer: -. Answer: D - average speed of </span>a<span>molecule.</span>
Answer:
0.1364 $/kWh
Explanation:
Annual expenditure of the family on electricity = $1500
Total energy consumed during the year = 11000 kWh
Kilowatt hour is the unit of energy which is given by the product of the energy in kW and the number of hours that energy has been used.
Unit price of energy = Annual expenditure / Total energy consumed during the year
∴ Unit price of energy is 0.1364 $/kWh
Answer:
Fr = 48 [N] forward.
Explanation:
Suppose the movement is on the X axis, in this way we have the force of the engine that produces the movement to the right, while the force produced by the brake causes the vehicle to decrease its speed in this way the sign must be negative.
∑F = Fr
The movement remains forward, since the force produced by the movement is greater than the braking force.
Answer:
Explanation:
Voltage of the car battery = 12.0 V
Voltage drop in the battery = 3.4 V
The remainder of the voltage is the starter voltage, that is:
Starter voltage = Initial battery voltage - voltage drop
Starter voltage = 12.0 - 3.4
Starter voltage, = 8.6 V
Current drawn by starter, = 93 A
According to Ohm's law:
Starter Resistance, =
Two examples of where you can find permanent magnets are
1.compass
2.speakers