3) If a picture frame were supported by a pair
of vertical wires, then the tension in each
wire would be half of the weight of the frame.
The frame is supported by wires positioned
at the angles shown below. If the frame
weighs 28.0 N, what is the tension in each
angled wire?
60
50.00

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.

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)

What are known as the properties of substances that describe a substance et does not change that substances?