Physics, 04.10.2021 23:20 ShevyPrice
During the middle of a family picnic, Barry Allen received a message that his friends Bruce and Hal
to be saved. Barry promised his wife Iris that he would be back in exactly 5 minutes. From that that picnic
location, Barry runs at a speed of 600 m/s for 2 minutes at a heading of 35° north of west to save Bruce.
He then changed his heading to 30° west of north, slows down to 400 m/s and runs for 1 minute to save
Hal. (The changes in speed are essentially instantaneous and not part of solving this problem).
(aPray a physical representation of the displacement during Barry's full trip.
Answers: 2
Physics, 22.06.2019 12:30
Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.
Answers: 1
Physics, 22.06.2019 16:50
During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.
Answers: 2
Physics, 22.06.2019 16:50
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
Answers: 1
Physics, 22.06.2019 23:00
Which of the following describes how a microwave heats food
Answers: 2
During the middle of a family picnic, Barry Allen received a message that his friends Bruce and Hal...
Biology, 04.02.2020 09:48
Biology, 04.02.2020 09:48
Social Studies, 04.02.2020 09:48
Health, 04.02.2020 09:48
Mathematics, 04.02.2020 09:48
English, 04.02.2020 09:48
Physics, 04.02.2020 09:48
Biology, 04.02.2020 09:48
English, 04.02.2020 09:48
English, 04.02.2020 09:48
English, 04.02.2020 09:48
Mathematics, 04.02.2020 09:48
Computers and Technology, 04.02.2020 09:48