Physics, 02.03.2021 01:00 hargunk329
- Thermal Energy Test
The front door of a home is made of steel. When it is warm outside, the door sticks and is difficult to open or close. When the weather is cool, the door
does not stick. Which statement best explains the difference in the behavior of the door when the weather is warm compared to when it is cool?
A. When a material contracts, it increases in volume due to an increase in kinetic energy.
a
B. Different materials expand and contract at the same rates due to the kinetic energy being the same.
C. Thermal expansion makes the door fit better when it is cooler due to a decrease in kinetic energy.
D. The metal in the door expands when it becomes warm due to an increase in kinetic energy, and contracts when it's cooler.
Answers: 2
Physics, 21.06.2019 17:30
What is the difference between electrically neutral objects and electrically charged objects
Answers: 2
Physics, 22.06.2019 01:30
Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz
Answers: 3
Physics, 22.06.2019 09:30
The necleus of an atom is made up of what subatomic particles?
Answers: 1
Physics, 22.06.2019 11:30
1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.
Answers: 1
- Thermal Energy Test
The front door of a home is made of steel. When it is warm outside, the door...
English, 07.09.2021 22:50
History, 07.09.2021 22:50
Mathematics, 07.09.2021 22:50
Business, 07.09.2021 22:50
Chemistry, 07.09.2021 22:50
Mathematics, 07.09.2021 22:50
English, 07.09.2021 22:50
Mathematics, 07.09.2021 23:00
Business, 07.09.2021 23:00