Could you please help with part b? i am unsure as to how to get the average force [N94/2/1]A projectile of mass 3.2 x 10-2 kg is fired from a cylindrical barrel of cross-sectional area2.8 x 10-4 m² by means of compressed air. The variation with time of the excess pressure p ofthe gas in the barrel above atmospheric pressure is shown in the figure below.(a)(b)p/MPa(c)6050(i)(ii)40302010-0Calculate1.02.0t/ms3.04.0the maximum force exerted on the projectile,the acceleration of the projectile which would result from the force calculated in(i).From the graph, estimate the total change in momentum experienced by theprojectile, due to the compressed gas.The speed of the projectile changes from zero to 270 m s-¹ as it leaves the barrel.What is the change in momentum of the projectile?(d) Compare your answers in (b) and (c) and suggest a possible reason for thedifference.

Answered: Image /qna-images/answer/c93172e2-c0b7-4126-b0bd-9fa0ddaa1888.jpg

(b) (c) From the graph, estimate the total change in momentum experienced by the projectile, due to the compressed gas. The speed of the projectile changes from zero to 270 m s-¹ as it leaves the barrel. What is the change in momentum of the projectile? (d) Compare your answers in (b) and (c) and suggest a possible reason for the difference.

(b) (c) From the graph, estimate the total change in momentum experienced by the projectile, due to the compressed gas. The speed of the projectile changes from zero to 270 m s-¹ as it leaves the barrel. What is the change in momentum of the projectile? (d) Compare your answers in (b) and (c) and suggest a possible reason for the difference.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter11: Fluid Statics

Section: Chapter Questions

Problem 50PE: Scurrilous con artists have been known to represent gold-plated tungsten ingots as pure gold and...

See similar textbooks

Similar questions

Scurrilous con artists have been known to represent gold-plated tungsten ingots as pure gold and sell them to the greedy at prices much below gold value but deservedly far above the cost of tungsten. With what accuracy must you be able to measure the mass of such an ingot in and out of water to tell that it is almost pure tungsten rather than pure gold?
In testing a new material for shielding spacecraft, 126 small ball bearings, each moving ata supersonic speed of 410.1 m/s, collide headon and elastically with the material during a0.803 min interval.If the bearings each have a mass of 7.6 gand the area of the tested material is 0.77 m2,what pressure is exerted on the material?Answer in units of Pa.
An airplane has wings, each with area 3.85 m2, designed so that air flows over the top of the wing at 248 m/s and underneath the wing at 226 m/s. Approximately what size wings would an aircraft need on Mars if its engine generates the same differences in speed as in the "Practice It" and the total mass of the craft is 300 kg? The density of air on the surface of Mars is approximately one percent Earth's density at sea level, and the acceleration of gravity on the surface of Mars is about 3.8 m/s2. ______________m2
A hippo is dozing under water with only its small nostrils sticking out. It has a mass of 3000 kg and a volume of about 2.98 m3 after exhaling. How much force in Newtons does it exert on the ground of the pool (fresh water, density 1g/cm3)?
The terminal velocity of a copper ball of radius 2.0 mm falling througha tank of oil at 20 oC is 6.5 cm s-1. Compute the viscosity of the oil at 20 oC. Density of oil is 1.5 ×103 kg m-3. density of copper is 8.9 × 103 kg m-3.
In a period of 1.0 s, 5.0 x 1023 nitrogen molecules strike a wall of area 8.0 cm2. If the molecules move at 3.00 x 102 m/s and strike the wall head-on in a perfectly elastic collision, find the pressure exerted on the wall. (The mass of one N2 molecule is 4.68 x 10-26 kg.)
A 7 m diameter hot air balloon is neither rising nor falling. The density of atmospheric air is 1.3 kg/m^3. The total mass in kg of the balloon including the people on board is a.207 b.163 c.180 d.234
A car is carrying a piece of plywood with dimensions 2.40 m by 1.15 m. If the mass of the plywood is 12.0 kg, what maximum speed can the car travel before the wood flies off? This is the speed of the air rushing above the plywood as the car moves along. (Density of the air is 1.29 kg/m3)
Superman leaps in front of Lois Lane to save her from a volley of bullets. In a 1-minute interval, an automatic weapon fires 150 bullets, each of mass 8.0 g, at 4.00 x 102 m/s. The bullets strike his mighty chest, which has an area of 0.75 m2. Find the average force exerted on Superman’s chest if the bullets bounce back after an elastic, head-on collision.
The density of water at 0°C is very nearly 1000 kg/m3 (it is actually 999.84 kg/m3), whereas the density of ice at 0°C is 917 kg/m3. The bulk modulus of ice is 2.20 × 109 Pa. a. Calculate the pressure, in pascals, necessary to keep freezing water from expanding, neglecting the effect such a large pressure would have on the freezing point. (This problem gives you only an indication of how large the forces associated with freezing water might be.)
How many cubic meters of helium are required to lift a light balloon with a 400-kg payload to a height of 8 000 m? Take Hc = 0.179 kg/m3. Assume the balloon maintains a constant volume and the density of air decreases with the altitude z according to the expression pair = 0e-z/8 000, where z is in meters and 0 = 1.20 kg/m3 is the density of air at sea level.
How many cubic meters of helium are required to lift a balloon with a 400-kg payload to a height of 8 000 m? Take He = 0.179 kg/m3. Assume the balloon maintains a constant volume and the density of air decreases with the altitude z according to the expression air = 0ez/8, where z is in meters and 0 = 1.20 kg/m3 is the density of air at sea level.