Physics, 16.07.2021 14:00 unknown6669
at t=3s particle moving in X Y plan at constant acceleration has velocity V= 3i._2j m/s it's at origin final velocity Vf=(9i 7j)m/s at time 3s find acceleration and it's coordinate at t=3s?
Answers: 2
Physics, 21.06.2019 19:10
What happens to light waves from a star as the star moves away from earth?
Answers: 3
Physics, 22.06.2019 09:50
Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors
Answers: 1
Physics, 22.06.2019 10:30
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.
Answers: 2
Physics, 22.06.2019 17:40
The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.
Answers: 3
at t=3s particle moving in X Y plan at constant acceleration has velocity V= 3i._2j m/s it's at orig...
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