A mass weighting 24 lbs stretches a spring 3 inches. The mass is in a medium that exerts a viscous resistance of 21 lbs when the mass has a velocity of 6 ft/sec. Suppose the object is displaced an additional 6 inches and released. Find an equation for the object's displacement, u(t), in feet after t seconds. u(t) =

- [-/1 Points] DETAILS SERCP8 4.P.006. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A freight train has a mass of 1.4 x 10 kg. If the locomotive can exert a constant pull of 8.4 x 105 N, how long does it take to increase the speed of the train from rest to 76 km/h? min Need Help? Read It

A forensic scientist test-fires a projectile (mass mP) at a cubic block (volume V), made from wood (density D), resting on a rough surface (static = kinetic coefficient uS). The bullet enters the block with an initial velocity vo and exits the block with a velocity v1. The friction forces on the bullet as it passes through the length of the block are unknown and are assumed to be constant. Solve these problems algebraically first: a) What is the deceleration of the bullet inside the block? How many "g" is that? b) How much time does it take the projectile to pass through the block? c) What is the velocity of the block as the bullet exits? d) How long (time) and how far (distance) does the block slide after the bullet has exited? e) Solve the above numerically for the following parameters (g =9.81m/s^2): mP = 10g, V = 0.1m^3, D = 500kg/m^3, µS = 0.8, v0 = 500m/s, v1 = 100m/s

A diver 50 m deep in 8°C fresh water exhales a 1.2 cm diameter bubble which rises to the surface of the water and has a diameter of 2.2 cm when it reaches the surface of the water. Assume the air bubble rises slow enough that it is always in thermal equilibrium with the surrounding water. Include units in all your numerical responses 1. Determine the pressure of the air inside the bubbles

Identify the missing properties of the fluid whose properties are given in the table.Specify the selection and accounts.

Q1: A100 kg man in space throws a 20kg space rock. As a result, the man accelerates to the left at 1m/s2.what is the acceleration of the rock?

Solve it correctly please.I will rate accordingly. Pl

Q1 A balloon is rising vertically above a level, straight road at a constant rate of 1 ft sec. Just when the balloon is 65 ft above the ground, a bicycle moving at a constant rate of 17 ft sec passes under it. How fast is the distance s(t) between the bicycle andoballoon increasing 3 sec later?

- x1(1) X2(1) 1 N/m 1 kg 1 N-s/m 1 kg Frictionless" The matrix form of the system is (s²+s+1 (s + 2) s +s+1)x,(s)) (s²+s+1 -(s+1) (x,(s) (s+1) X,(s) a. (s)x) F(s) b. -(s+ 2) s +s+1 X,(s), s² +s+1 -(s+1) -(s +1) s' +s+1x,(s))F(s). s'+s+1 (s+1) X,(s) X,(s) с. F(s)' d. -(s+1) s+s+1 X,(s)) Select one: а. с b. a c. b d. d

4.2. The ball catathermometer factor (F) is 620, time while the spirit column drops from 38 to 350C in 100 seconds and the air temperature is 260C. Determine the air movement speed for the industrial section with these parameters.