Physics, 03.02.2021 01:00 duttonsteven45
A 60-kg cheetah reaches a speed of 30 m/s as it chases its prey. What is the kinetic energy of the cheetah?
A. 900J
B. 1,800
C. 27,000
D. 54,000 J
Answers: 1
Physics, 22.06.2019 06:20, jonmorton159
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 22:00, tiffanydowell13
Aviolently rotating column of air is formed around a region of extremely low air pressure above land. which of these weather conditions is most likely to follow? blizzard cyclone tornado hurricane
Answers: 1
Physics, 22.06.2019 22:20, queenbee2994
One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.
Answers: 2
A 60-kg cheetah reaches a speed of 30 m/s as it chases its prey. What is the kinetic energy of the c...
Physics, 03.08.2019 05:00
Mathematics, 03.08.2019 05:00
Biology, 03.08.2019 05:00
Mathematics, 03.08.2019 05:00