Three resistors of 5 ohms, 10 ohms and 20 ohms are connected in parallel across a 12-v supply. Calculate, i) the combined resistance (ii) the current flowing through each resistor (iii) the total current in the circuit (iv) the electrical power dissipated in through each resistor

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.