In winter, after a snowfall, many people have trouble getting the car out of the driveway if the garage is below the level of the road. if the coefficient of static friction between tires of normal wear and snow is 0.14, what is the maximum incline of a driveway so that a four- wheel-drive vehicle can get up on the road during the winter?

An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 v for 0.65 ms. the resistance of the heart muscle between the pacemaker’s electrodes is 550 ω. find (a) the current that flows during a pulse, (b) the energy delivered in one pulse, and (c) the average power supplied by the pacemaker.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.