Physics, 21.11.2019 11:31 pleasehelp5334me2
Abullet of mass 20g strikes a block of mass 980g with a velocity u and gets embedded in it. the block is in contact with a spring whose force constant is 100n/m. after the collision the spring is compressed to 10cm. find: 1. velocity of the block after the collision. 2. magnitude of the velocity of the bullet. 3. loss in kinetic energy due to the collision.
Answers: 3
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
Physics, 22.06.2019 07:00
Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount
Answers: 1
Physics, 22.06.2019 17:00
Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?
Answers: 1
Physics, 22.06.2019 22:00
Will mark brainliest! asap! ! 16) which of the clouds shown would indicate a possible future rain storm? a) b) c) d)
Answers: 1
Abullet of mass 20g strikes a block of mass 980g with a velocity u and gets embedded in it. the bloc...
Mathematics, 18.12.2020 18:40
Mathematics, 18.12.2020 18:40
English, 18.12.2020 18:40
Mathematics, 18.12.2020 18:40
Arts, 18.12.2020 18:40
Mathematics, 18.12.2020 18:40
Mathematics, 18.12.2020 18:40
Mathematics, 18.12.2020 18:40
Mathematics, 18.12.2020 18:40
Mathematics, 18.12.2020 18:40
Mathematics, 18.12.2020 18:40