A family uses a rice cooker with a capacity of P = 860W, an oven electricity with capacity P = 500W, voltage used U = 220V. Calculate.
a. The current flowing through the devices and the total current when the two devices work together
job ?
b. Resistors on devices?
c. Power consumption in 1 month and 30 days, knowing that the rice cooker uses
Use 6 hours in 1 day, oven use 8 hours in 1 day?

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

If a simple machine reduces the strength of a force, what must be increased?