# Atypical raindrop is much more massive than a mosquito and falling much faster than a mosquito flies. how does a mosquito survive the impact? recent research has found that the collision of a falling raindrop with a mosquito is a completely-inelastic collision. that is, the mosquito is "swept up" by the raindrop and ends up traveling along with the raindrop. once the relative speed between the mosquito and the raindrop is zero, the mosquito is able to detach itself from the drop and fly away.

part a

a hovering mosquito is hit by a raindrop that is 50 times as massive and falling at 8.1m/s , a typical raindrop speed. how fast is the raindrop, with the attached mosquito, falling immediately afterward if the collision is perfectly inelastic?

part b

because a raindrop is "soft" and deformable, the collision duration is a relatively long 8.0 ms. what is the mosquito's average acceleration, in g's, during the collision? the peak acceleration is roughly twice the value you found, but the mosquito's rigid exoskeleton allows it to survive accelerations of this magnitude. in contrast, humans cannot survive an acceleration of more than about 10 g.

Answers: 1

Physics, 21.06.2019 18:10, zuleromanos

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

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Physics, 21.06.2019 19:10, shazanah95

Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.

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Physics, 21.06.2019 23:30, asco0317p34v1s

Classify the following soils according to the uscs classification system. provide appropriate uscs designations. a) this sample of well-graded gravel with sand was obtained from a large earthen dam in vancouver, canada. the sample has 73% fine to coarse sub-angular gravel, 25% fine to coarse sub-angular sand and 2% fines. the maximum size of the particles is 75 mm. the coefficient of curvature is 2.7, while the uniformity coefficient is 12.4. b) this dark brown and wet soil with a â€śstrong organic odorâ€ť has 100% passing the no. 200 sieve. the liquid limit of the material is 32% when not dried and is 21% when oven-dried. the plastic index is 21% when not dried. c) this sand has 61% predominantly fine sand, 23% silty fines, and 16% fine sub-rounded gravel size. the maximum size is 20 mm. the liquid limit is 33% and the plastic limit is 27%. d) this soil has 74% fine to coarse sub-angular reddish sand and 26% organic and silty dark brown fines. the liquid limit is 37% when not dried and is 26% when oven dried. the plastic index is 6% when not dried.

Answers: 1

Physics, 22.06.2019 01:00, Bearboy1564

Asuppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer.

Answers: 3

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