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when was the red rever cleard for boat travel?

did the railrosds reach shreveport before or after the discovery of oil at caddo lake?

A force of magnitude Fx acting in the x-direction on a 2.55-kg particle varies in time as shown in the figure below. (Indicate the direction with the sign of your answer.) (a) Find the impulse of the force. (Give your answer to one decimal place.) kg · m/...

A 3.42-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle. If the ball is in contact with the wall for 0.170 s, what is the average force exerted by t...

In a popular amusement park ride, a rotating cylinder of radius R = 2.60 m is set in rotation at an angular speed of 4.00 rad/s, as in the figure shown below. The floor then drops away, leaving the riders suspended against the wall in a vertical position....

The two conditions for equilibrium often result in a system of equations such as F1 + F2 = 44.0 N and 3.00F1 − 8.00F2 = 0. find F1 and find F2

A spinning wheel steadily slows from an initial angular velocity of 1.65 rev/s to 0.485 rev/s in 12.2 s. (a) Calculate the wheel's angular acceleration in radians per second squared. rad/s2 (b) What angle does it go through during that time? rad

A construction crane's cable lifts a 49.5-kg box upward with an acceleration of 1.30 m/s2. Find the tension in the rope. N

What is the magnitude of the angular acceleration of a 25.5-kg disk of radius 0.775 m when a torque of magnitude 41.5 N · m is applied to it? rad/s2

A bowling ball of mass 7.45 kg is rolling at 2.56 m/s along a level surface. (a) Calculate the ball's translational kinetic energy. J (b) Calculate the ball's rotational kinetic energy. J (c) Calculate the ball's total kinetic energy. J (d) How much work...

A disk of mass m is spinning freely at 6.22 rad/s when a second disk of identical mass, initially not spinning, is dropped on it so that their axes coincide. In a short time the two disks are corotating. (The two disks have the same radius.) (a) What is t...

in a class of 25 students, 15 play hockeyand 16 play basketball. if there are 4 students who play neither sport, determine the number of students who play both hockey and basketball

Determine a direction vector of the line of intersection of the two planes 2x - 7y + z = 5 and x + 3y - 6z = 2. If there is not a single line of intersection, classify the system.

is 8.2because the dog round many time

If a rod of 1025 steel 0.5 m long is heated from 20 to 80°C (293 to 353 K) while its ends are maintained rigid, determine the type and magnitude of stress that develops.