A 39.0-g projectile is launched by the expansion of hot gas in an arrangement shown in figure a. The cross-sectional area of the launch tube is 1.0 cm2, and the length that the projectile travels down the tube after starting from rest is 32 cm. As the gas expands, thepressure varies as shown in figure b. The values for the initial pressure and volume are P, = 15 x 105 Pa and V, = 8.0 cm3 while the final values are P; = 1.5 x 105 Pa and V; = 40.0 cm³. Friction between the projectile and the launch tube is negligible.PP;32 cmGasPf- 8 cm -VV;(a) If the projectile is launched into a vacuum, what is the speed of the projectile as it leaves the launch tube?m/s(b) If instead the projectile is launched into air at a pressure of 1.5 x 105 Pa, what fraction of the work done by the expanding gas in the tube is spent by the projectile pushing air out of the way as it proceeds down the tube?spent =env

Answered: Image /qna-images/answer/4d9b3287-bf14-482c-82e2-502ade715f24.jpg

A 39.0-g projectile is launched by the expansion of hot gas in an arrangement shown in figure a. The cross-sectional area of the launch tube is 1.0 cm?, and the length that the projectile travels down the tube after starting from rest is 32 cm. As the gas expands, pressure varies as shown in figure b. The values for the initial pressure and volume are P, = 15 x 10s Pa and V, = 8.0 cm while the final values are P, = 1.5 x 105 Pa and V, = 40.0 cm. Friction between the projectile and the launch tube is negligible. M 32 cm Gas P - 8 cm - V (a) If the projectile is launched into a vacuum, what is the speed of the projectile as it leaves the launch tube? m/s (b) If instead the projectile is launched into air at a pressure of 1.5 x 10° Pa, what fraction of the work done by the expanding gas in the tube is spent by the projectile pushing air out of the way as it proceeds down the tube? "spent

A 39.0-g projectile is launched by the expansion of hot gas in an arrangement shown in figure a. The cross-sectional area of the launch tube is 1.0 cm?, and the length that the projectile travels down the tube after starting from rest is 32 cm. As the gas expands, pressure varies as shown in figure b. The values for the initial pressure and volume are P, = 15 x 10s Pa and V, = 8.0 cm while the final values are P, = 1.5 x 105 Pa and V, = 40.0 cm. Friction between the projectile and the launch tube is negligible. M 32 cm Gas P - 8 cm - V (a) If the projectile is launched into a vacuum, what is the speed of the projectile as it leaves the launch tube? m/s (b) If instead the projectile is launched into air at a pressure of 1.5 x 10° Pa, what fraction of the work done by the expanding gas in the tube is spent by the projectile pushing air out of the way as it proceeds down the tube? "spent

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A block of wood with a weight of 30 N is held by a spring with a stiffness of 2 N/mm, as shown in the figure below. A bullet with a weight of 2 N is fired at a speed of 20 m/s into a speed of 20 m/s into the block and sinks into it. Assuming that all the momentum of the bullet is transferred to the block, the motion of the bullet is entirely transferred to the block at the moment of impact, we ask to calculate the maximum displacement of the block a) neglecting damping and b) assuming that the damping is 10% critical. ..
Two blocks with masses m1 = 5.0 kg and m2 = 7.0 kg are attached by a string as shown in the figure below, over a pulley with mass M = 2.0 kg. The blocks are released from rest. The pulley, which turns on a frictionless axle, is a hollow cylinder with radius 0.050 m over which the string moves without slipping. The horizontal surface is frictionless. Find the speed of the system when the block of mass m2 has dropped 2 m.
A 2-kg car initially moving at 6 m/s at a height of 4 m encounters a hill of height 5 m, as shown in Figure. At a later point there is a horizontal spring (with a spring constant k=150 N/m) at a height of 2 m. (a) Does the car reach the spring? (Hint: Compare the initial total mechanical energy of the car with its potential energy at hill of height 5 m) (b) If so, what is the maximum compression in the spring? Ignore frictional losses and the rotational energy of the wheels.g=9.8 m/s2
The figure depicts two pucks on a frictionless table. Puck 2 is four times as massive as puck 1. Starting from rest, the pucks are pushed by two equal forces. 1-Which pucks will have the grater kinetic energy upon reaching the finish line? 2- Which puck will reach the finish time first ?
An object with mass m = 3.0 kg is released from rest from a height H = 10 m as shown in the figure. It slides down the incline at angle θ = 39° and collides with a spring that has a spring constant k = 1800 N/m. The coefficient of kinetic friction is not constant over the incline, but increases linearly with a distance as μ k (x) = αx, where α is constant and its value is 0.052 m −1 and x is distance in meters. The horizontal surface is frictionless. What distance that the spring will be compressed? (Your result must be in meters and include 2 digit after the decimal point. Maximum of 5% of error is accepted in your answer. Take g=9.8 m/s2.)
The motion of a steel ball in a hemispherical bowl of radius h shown in fig is to be analyzed. The ball is initially held at the highest location at point A, and then it is released. Obtain relations for the conservation of energy of the ball for the cases of frictionless and actual motions.
A block of mass m= 2.0 kg is released from rest on an inclined plane at a height of h = 1.5 m. It moves down the rough incline with slope theta= 30.0°and continues on the horizontal frictionless surface. As shown in the figure, there is a spring with negligible mass and force constant k = 300 N/m. The coefficient of kinetic friction between the block and the incline is 0.250 What is the speed of the block when it gets down on the horizontal surface before it touches the spring? The box continues to move on the horizontal surface and compresses the spring. What will be the maximum compression of the spring?
Forming a shock absorber, two springs of equal length are nested together. If the maximum compression of the springs is 0.25 and the outer spring has a stiffness of Ka = 420 N/m, what stiffness is required of the inner spring Kb? The design of the spring system is such that if a mass of 2.5 kg is at rest, then dropped from a distance of 0.75 m above the springs, the spring system will catch and stop the mass.
Given the following: Mass of the particle m=18.8 kg, ω=9.6 rad/s, α=8.3 rad/s^2, vrel=7.8 m/s, μs=0.6, μk=0.1, L=1.9 m, and h=2.9 m, What is the i^ component of the Normal force on particle P? What is the component of the friction force in the j^ direction on the particle? What is the value (including sign) of (aP/O)rel? What is the i^ component of the Acceleration of particle P? What is the j^ component of acceleration of particle P?
A spring with spring constant k=70 kN/m is used to stop the box of mass m with initial velocity V1= 7 m/s. The spring is initially compressed 100 mm with cables. Since the box produces a maximum compression x=60 mm in the spring. m= 60 kg. s=750mm(a) Find the kinetic coefficient of friction between the surface and the box.(b) Find the velocity of the box as it moves back from its original position.
A “swing ride” is shown in the figure. For b=1.6 m , L=3.8 m and θ=31o ,neglect the mass of the cables and treat the chair and person as one particle with mass m=33 kg:
A circular tank of diameter 3 m contains water up to a height of 4 m. The tank is provided with an orifice of diameter of 0.4 m at the bottom. Find the time taken by water to fall from 4 m to 2m. Take Cd= 0.60include your free body diagrama.84.7 seconds b.47.8 seconds c.24.8 seconds d.43.8 seconds