Physics, 11.11.2020 17:50, EmTerrell2933
Air at a temperature of 20 °C is flowing with a speed 160 m/s. A bullet is fired into the air stream with a speed of 750 m/s. The direction of the bullet is opposite to that of the air. Calculate the following:. a. The Mach number of the air flow. b. The Mach number of the bullet if it were fired in still air. c. The Mach number of the bullet with respect to the moving air.
Answers: 3
Physics, 22.06.2019 07:10, ddswaggsoflyy3176
Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?
Answers: 2
Physics, 22.06.2019 11:00, natalieburnett82
Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.
Answers: 3
Physics, 22.06.2019 19:30, ayoismeisjjjjuan
Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical
Answers: 1
Air at a temperature of 20 °C is flowing with a speed 160 m/s. A bullet is fired into the air strea...
English, 19.07.2019 23:30
Mathematics, 19.07.2019 23:30
Social Studies, 19.07.2019 23:30
Mathematics, 19.07.2019 23:30