(a) A sphere made of wood has a density of 0.810 g/cm and a radius of 7.50 cm. It falls through air of density 1.20 kg/m³ and has a drag coefficient of 0.500. What is its terminal speed (in m/s)? m/s (b) From what height (in m) would the sphere have to be dropped to reach this speed if it fell without air resistance? m Need Help? Read It

(a) A sphere made of wood has a density of 0.810 g/cm and a radius of 7.50 cm. It falls through air of density 1.20 kg/m³ and has a drag coefficient of 0.500. What is its terminal speed (in m/s)? m/s (b) From what height (in m) would the sphere have to be dropped to reach this speed if it fell without air resistance? m Need Help? Read It

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 61P

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(a) A sphere made of rubber has a density of 1.04 g/cm3 and a radius of 9.00 cm. It falls through air of density 1.20 kg/m3 and has a drag coefficient of 0.500. What is its terminal speed (in m/s)? m/s (b) From what height (in m) would the sphere have to be dropped to reach this speed if it fell without air resistance? m Need Help? Read It O Type here to search 5:58 PM 11/7/2020 DELL
(a) A sphere made of rubber has a density of 0.940 g/cm³ and a radius of 8.00 cm. It falls through air of density 1.20 kg/m³ and has a drag coefficient of 0.500. What is its terminal speed (in m/s)? m/s (b) From what height (in m) would the sphere have to be dropped to reach this speed if it fell without air resistance? Need Help? m Read It
(b) From what height (in m) would the sphere have to be dropped to reach this speed if it fell without air resistance?
A 200m2 wall on a building has a drag coefficient of 0.4. It is rated to a maximum wind force of 64000 N. What is the maximum wind speed it can be exposed to? (Assume rho air = 1 kg.m-3)
2) A disk (40mm diameter and 0.2 kg mass) is dropped in the air. Consider g = 10 m/s² and the density of air 1.2 kg/m³. Assume that the drag coefficient of the disk is 1.17. At t=0, the disk speed V = 0. a) What is the acceleration and distance when the ball speed reaches to 1/4V₁, where V, is the terminal speed? b) What would be the answer for part (a) if the falling object is hemispherical (40mm diameter and 0.2 kg mass)? Explain
heeelp meee A shuttlecock is launched from the ground with an initial speed of 31.8066 m/s at an angle of 7.4391 degrees with respect to the horizontal. The shuttlecock experiences air resistance with a drag coefficient of 0.2742 in an environment where the air density is 0.6066 kg/m3. If the shuttlecock has a radius of 3.4 cm and a mass of 5.2 grams, what is the maximum height reached by the shuttlecock? Assume that the experiment is done near the surface of the earth.
A cup cake liner with a mass of 0.397 g, cross section area A = 42.3 cm² and a drag coefficient of D = 0.644 is dropped from rest. Find the magnitude of its terminal velocity in m/s. Use g=9.806 m/s² and an air density of 1.20 kg/m³. Enter the number only, without the unit.
It is autumn. You look outside a window and see a maple leaf falling face down, in a straight vertical line. You estimate the speed of the leaf to be 25.77 cm/s. You then pick up the leaf and do measurements. It has a mass of 2.76 g and a cross sectional area of 76 square cm. You measure the density of air to be 1.298 kg m-³. What is the drag coefficient between the leaf and the air? (numerical value only) Number (Hint: For an object to fall with constant speed, it must be at 'terminal velocity'.)
The maximum ('terminal') velocity, vt, that a falling object achieves depends on its mass m, the acceleration g due to gravity, the density p of the air, the object's frontal area A, and the object's drag coefficient C, which is a dimensionless quantity. The equation for the terminal velocity is: 2mg V = pCA Part (a): A skydiver jumps out of an airplane (regrettably) without his parachute. To slow his descent, he orients himself in a 'spread eagle' position, thereby increasing his area A to 0.70 m?. His drag coefficient Cis 1.0, which is a unitless quantity. Calculate his terminal velocity in m/s if his mass is 85 kg, the air density p is 1.21 kg/m3, and the constant g is 9.80 m/s?. Show your work, and ensure that each numeric value has the appropriate units. Your answer should be rounded to the appropriate number of significant digits. Part (b): Convert the answer from part (a) to miles per hour using the dimensional analysis method we reviewed in class. Show your work, and ensure…
The mass of a sports car is 1100 kg. The shape of the car is such that the aerodynamic drag coefficient is 0.250 and the frontal area is 2.20 m2. Neglecting all other sources of friction, calculate the initial acceleration of the car, if it has been traveling at 80 km/h and is now shifted into neutral and is allowed to coast. (Take the density of air to be 1.295 kg/m3.) Answer:_____m/s2
A raindrop with radius R= 1.5 mm falls from a cloud that is at height h = 1200 m above the ground.The drag coefficient C for the drop is 0.60. Assume that the drop is spherical throughout its fall. The density of water rw is 1000 kg/m3, and the density of air ra is 1.2 kg/m3. (a) the raindrop reaches terminal speed after falling just a few meters.What is the terminal speed?
SCSU physics and astronomy student club has a recently established tradition of pumpkin drop, from the top of Wick Science Building to the "moat" below street level. Although the "experimental data" have not been made public, there have been rumors of the drop took 2.20 seconds, i.e. falling from rest with negligible air drag. Based on the rumor, how tall is the building from the "moat" to the roof? Ignore air drag or any rotation of pumpkins. Hint: You may assume final position to be zero.