A spherical raindrop 3.5 mm in diameter falls through a vertical distance of 3700 m. Take the cross-sectional area of a raindrop = ?r2, drag coefficient = 0.45, density of water to be 1000 kg/m3, and density of air to be 1.2 kg/m3. (a) Calculate the speed a spherical raindrop would achieve falling from 3700 m in the absence of air drag. (m/s) (b) What would its speed be at the end of 3700 m when there is air drag? (Note that the raindrop will reach terminal velocity after falling about 30 m.)

Q: Vo = 2 m/s 40°

A:

Q: The 2.0 kg wooden box in the figure slides down a vertical wooden wall while pushing it at an angle…

A: The objective of the question is to find the magnitude of force that must be applied to make the box…

Q: The drag on a pitched baseball can be surprisingly large. Suppose a 145 gram baseball with a…

A: Given; Mass of ball, m = 0.145 kg Diameter of ball, d = 0.074 m therefore , r= 0.037 Drag…

Q: A 1 kg ball is fired from a cannon directly upwards in an airless chamber. Its initial speed is 10…

A: Given data: Initial velocity (v0) = 20 m/s Mass (m) = 2 kg Acceleration due to gravity (g) = 10 m/s2…

Q: A fishnet consists of 1 mm diameter strings which form a pattern of 1 cm x 1 cm squares. Estimate he…

A: The diameter of the fishnet is The one side  of square is The velocity is The density is The…

Q: You have been asked to design an escape ramp for trucks in a downhill 40 mph zone. Assuming a truck…

A:

Q: A 300kg weight is held aloft by a rope that passes over a pulley and is then tied down. A 100 kg…

A:

Q: A 35.0-kg child swings in a swing supported by two chains, each 2.90 m long. The tension in each…

A: The child's mass:the length of the chains: The tension in the chains at the lowest point:

Q: A tennis ball is thrown at 25 m/s on a day when the wind speed is 0 m/s.  What is the drag force…

A:

Q: Running on a treadmill is slightly easier than running outside because there is no drag force to…

A:

Q: A ball hangs from a 1.25 m string. If it is given a push at the bottom, what is the minimum speed…

A:

Q: A rope exerts a constant horizontal force of 280 N to pull a 50kg crate across the floor. the…

A:

Q: Neglecting air resistance, with what initial speed would you have to throw a ball into the air so…

A: To find the maximum height at which ball reaches.

Q: A car is driving along a level and unbanked circular track of diameter d=0.54km at a constant speed…

A:

Q: A skier traveling travelling with a magnitude of velocity v approaches a ramp that has an angle of…

A:

Q: I need help with this Hw Problem.

A:

Q: (a) You want to design a circular racetrack of radius R such that cars of mass M can go around the…

A: Given:Radius of circular track = RMass of the car = MBanking angle = θ

Q: You push a box (mass 3 kg) so that its initial speed is 2.2 m/s. It slides across a rough floor…

A: KE=Wfriction12mv2=μkmgdd=v22μkg

Q: SCSU physics and astronomy student club has a recently established tradition of pumpkin drop, from…

A: According to the Newton's laws of motion , the final velocity (v) and the displacement () are…

Q: A 1500-kg car drives around a flat 25-m-radius circular track at 10 m/s (approximately 22 mph). What…

A: Given that:m=1500 kgR=25 mv=10 m/sμs=1.0μk=0.80g=10 m/s2

Q: Hawks soar in search of prey and then fold their wings and drop like a rock from the sky on their…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: A raindrop with radius R= 1.6 mm falls from a cloud that is at height h = 1200 m above the ground.…

A: Given: The radius of the drop is 1.6 mm. The height of the cloud is 1200 m. The density of water is…

Q: When Fatima rides her bicycle at 5 m/s, the drag force acting on her and her bicycle is 6 N. If she…

A:

Q: A tourist looks up at a tall obelisk and desires to determine the height of this object. He…

A: Please see the attached image for the solution. If there are queries or if the image is not loading,…

Q: What is the coefficient of friction between the tires and the surface?

A: Giiven: m= 2500 kg  Initial velocity =vi=14.0 m/s  Final velocity= 0 m/s  accelerartion due to…

Q: A desperate hiker has to think fast to help his friend who has fallen below him. Quickly, he ties a…

A:

Q: A small block has a horizontal velocity of 4.00m/s as it slides off the edge of a table. The table…

A: T = sqrt(2v/g) = SQRT((.9 *2)/ 9.8) = 0.4286 seconds

Q: Children sled down a 41 m long hill inclined at 24 degrees. At the bottom, the slope levels out. If…

A:

Q: A small object begins a free fall from a height of 29.0 m. After 1.10 s, a second small object is…

A:

Q: 12kg box is released from the top of the incline that is 5m long and makes an angle of 40 degrees to…

A:

Q: A heavy crate is suspended from two ropes as it is lowered from a high shelf to the floor at a…

A: Given data: The tension in one rope is T1=653 N. The angle made by one rope is θ1=26.5°. The angle…

Q: body having a mass of 40kg rests on a horizontal table and it is found that the least horizontal…

A:

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.