A 1.43-kg steel ball is dropped from a plane to an ocean. If the  velocity of the ball just before reaching the water is 1.06 m/s and if the resistance in the water is 2.59v, what is the velocity of the steel ball 6 seconds into the water? Answer in four decimal

Question 6 A body of mass 25kg falls on the ground from a height of 19.6m. The body penetrates into the ground. Assume the resistance by the ground to penetrate is constant and equal to 4998N. Take = 9.8m/s². А. Find the final velocity of the body just before it hits the ground. В. Calculate the retardation (acceleration) when the body is penetrating the ground. С. Find the distance through which the body will penetrate into the ground.

At 20°C, the carbon resistor in an electric circuit connected to a 5.5-V battery has a resistance of 2.9 ✕ 102 Ω. What is the current in the circuit when the temperature of the carbon rises to 85°C?

A real battery has an electromotive force of 12.0 volts and has an internal resistance of 6.00 ohms and a current of 0.500 amps.  What is the actual voltage of the battery?

The resistance of an electric heater is  90 Ω  when connected to 120 V. How much energy does it use during  20 min  of operation?

A circuit in a small appliance operates on a current of 1.5 mA. How many electrons enter and leave this part of the appliance in 5.0 s?

A circuit with a battery, a 2 Ω resistor, a 20 Ω resistor, and a 21 Ω resistor in parallel. The total voltage is the system is 9.3 V. What is the current through the 2 Ω resistor?

A 300-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,240 A. If the conductor is copper with a free charge density of 8.5  1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156  107 for the number of seconds in a year.) ?yr

A current of 4.4 A flows for 16.0 s through a conductor. Calculate the number of electrons that pass through a point in the conductor during this time. Answer format: 1.23e+45

The resistance of an electric heater is  90 Ω  when connected to 120 V. How much energy does it use during  50 min  of operation?