Physics, 31.12.2019 03:31 amw4

Does the kinetic energy of a car change more when it accelerates from 27 km/h to 37 km/h or when it accelerates from 37 km/h to 47 km/h?

1) more information is needed.

2) no difference

3) from 37 km/h to 47 km/h

4) from 27 km/h to 37 km/h

Answers: 3

Show answers

Another question on Physics

Physics, 21.06.2019 16:30

Which of the following would not be taken into consideration when describing the quality of a sound

Answers: 2

Answer

Physics, 21.06.2019 17:00

We all use gps today, even if we don't drive yet. i bet you have been in the car with a parent and they have asked you to get out your phone to find a specific location. in your car, on the phone, you are using a very sophisticated technology. gps satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. gps receivers take this information and use trilateration to calculate the user's exact location. essentially, the gps receiver compares the time a signal was transmitted by a satellite with the time it was received. the time difference tells the gps receiver how far away the satellite is. now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map. what type of signal is utilized by the gps satellite?

Answers: 2

Answer

Physics, 22.06.2019 00:30

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

Answers: 2

Answer

Physics, 22.06.2019 00:40

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

Answers: 1

Answer

You know the right answer?

Does the kinetic energy of a car change more when it accelerates from 27 km/h to 37 km/h or when it...

Questions