Physics, 20.09.2019 17:20 peytenyoung
Atrain has a length of 81.1 m and starts from rest with a constant acceleration at time t = 0 s. at this instant, a car just reaches the end of the train. the car is moving with a constant velocity. at a time t = 11.6 s, the car just reaches the front of the train. ultimately, however, the train pulls ahead of the car, and at time t = 36.3 s, the car is again at the rear of the train. find the magnitudes of (a) the car's velocity and (b) the train's acceleration. g
Answers: 1
Physics, 22.06.2019 21:30
Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?
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Physics, 23.06.2019 00:30
1. when conducting a test on what kind of music increases the growth of plants, all of the following would fail to meet to fair test standard except (1 point) using different kinds of plants. giving some plants more water than others. exposing the plants to different types of music. using nutrient-rich soil for one and lesser soil for others. 2. engineering uses scientific thinking to solve real-world problems. (1 point) true false 3. what does it mean to test a hypothesis? (1 point) pass a quiz on other scientists’ results analyze only the results from scientific sources not make assumptions about how an experiment will turn out see if the results of an experiment are what the scientist predicted
Answers: 3
Physics, 23.06.2019 01:00
What happens to the vapor pressure of a substance when its surface area is increased at constant temperature?
Answers: 3
Atrain has a length of 81.1 m and starts from rest with a constant acceleration at time t = 0 s. at...
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