Physics, 26.03.2020 12:32 daniel1480
A trolley has a mass of 1.2 kg and a speed of 4.5 m/s. The trolley crashes into a stationary trolley of mass 0.8 kg. On impact the two trolleys stick together and move off with speed, v. Calculate the momentum of the trolleys before impact. Calculate the speed of the trolleys after impact.
Answers: 2
Physics, 22.06.2019 02:40
If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability
Answers: 1
Physics, 22.06.2019 18:00
Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
Physics, 22.06.2019 21:10
Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness
Answers: 2
A trolley has a mass of 1.2 kg and a speed of 4.5 m/s. The trolley crashes into a stationary trolley...
Computers and Technology, 16.12.2020 21:40
English, 16.12.2020 21:40
Chemistry, 16.12.2020 21:40
Mathematics, 16.12.2020 21:40
Mathematics, 16.12.2020 21:40
Chemistry, 16.12.2020 21:40
Spanish, 16.12.2020 21:40
Spanish, 16.12.2020 21:40
Mathematics, 16.12.2020 21:40
Mathematics, 16.12.2020 21:40
Biology, 16.12.2020 21:40
Health, 16.12.2020 21:40