Physics, 15.04.2020 01:55 donnamorgan32
A set of crash tests consists of running a test car moving at a speed of 10.2 m/s (22.8 mi/hr) into a solid wall. Strapped securely in an advanced seat belt system, a 59.0 kg (130 lbs) dummy is found to move a distance of 0.780 m from the moment the car touches the wall to the time the car is stopped. Calculate the size of the average force which acts on the dummy during that time.
Answers: 1
Physics, 22.06.2019 10:50
Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.
Answers: 3
Physics, 22.06.2019 11:00
A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?
Answers: 3
Physics, 22.06.2019 11:00
Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?
Answers: 1
Physics, 22.06.2019 15:00
What happens when a rubber rod is rubbed with a piece of fur?
Answers: 1
A set of crash tests consists of running a test car moving at a speed of 10.2 m/s (22.8 mi/hr) into...
Engineering, 01.09.2020 20:01
Biology, 01.09.2020 21:01
Mathematics, 01.09.2020 21:01
Mathematics, 01.09.2020 21:01
Mathematics, 01.09.2020 21:01
Chemistry, 01.09.2020 21:01
Mathematics, 01.09.2020 21:01
Mathematics, 01.09.2020 21:01
Biology, 01.09.2020 21:01
Physics, 01.09.2020 21:01
Biology, 01.09.2020 21:01
Business, 01.09.2020 21:01
Biology, 01.09.2020 21:01
Biology, 01.09.2020 21:01