![subject](/tpl/images/cats/fizika.png)
Physics, 09.04.2021 01:00 joeljuarez128oyusun
A girl kicks a blue ball with a velocity of 20.0 m/s at 65.0o. How long is it in the air?
1.85s
1.92s
13.6s
3.69s
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:20
Clothing made of several thin layers of fabric with trapped air in between, often called ski clothing, is commonly used in cold climates because it is light, fashionable, and a very effective thermal insulator. so it is no surprise that such clothing has largely replaced thickand heavy old-fashioned coats. (a) consider a jacket made of five layers of 0.1-mm-thick synthetic fabric (k = 0.13 w/m·°c) with 1.5-mm-thick air space (k = 0.026 w/m·°c) between the layers. assuming the inner surface temperature of the jacket to be 28°c and the surface area to be 1.25 m2, determine the rate of heat loss through the jacket when the temperature of the outdoors is 0°c and the heat transfer coefficient at the outer surface is 25 w/m2·°c. (b) what would your response be if the jacket is made of a single layer of 0.5-mm-thick synthetic fabric? what should be the thickness of a wool fabric (k = 0.035 w/m·°c) if the person is to achieve the same level of thermal comfort wearing a thick wool coat instead of a five-layer ski jacket?
Answers: 1
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 16:00
At what time will the interfering waves have an amplitudeof zero?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 17:00
Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?
Answers: 2
You know the right answer?
A girl kicks a blue ball with a velocity of 20.0 m/s at 65.0o. How long is it in the air?
1.85s
Questions
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.05.2020 23:04
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
English, 20.05.2020 23:04
![question](/tpl/images/cats/en.png)
English, 20.05.2020 23:04
![question](/tpl/images/cats/mat.png)
Mathematics, 20.05.2020 23:04
![question](/tpl/images/cats/biologiya.png)
Biology, 20.05.2020 23:04
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 20.05.2020 23:04
![question](/tpl/images/cats/istoriya.png)
History, 20.05.2020 23:04
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.05.2020 23:04
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.05.2020 23:04
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 20.05.2020 23:04
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 20.05.2020 23:04