Two identical cells each of e. m.f 2v and internal resistance 1.0Ω are connected in parallel. The combination is connected to an external load of 1.5Ω calculate the current in the circuit draw the circuit diagram​

Wo dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 3.2 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 12.9-kg slen

Asample of unknown material is more dense than copper. which could be the identity of the unknown material? a. lead only b. brick only c. lead or platinum only d. brick, platinum, or lead