Question: The artery is 2/3 blocked. The normal speed is 0.40 m/s and blood density is 1060 kg/m^3. Find the velocity of the blood at the blocked area. Find the pressure difference between the normal and blocked area.
A golf ball is hit horizontally and went off with initial velocity of 2 m/s at a hill top (h=1m) Find x, the horizontal distance traveled and velocity of the golf ball just before it hits the ground (incluiding direction)
1) A 3 kg bowling ball traveling with a velocity of 3 m/s collides head-on with another bowling ball of the same mass traveling with a velocity of -2 m/s. If the collision is perfectly elastic, the velocities of the bowling balls after the collision is: a. 2 m/s an -3 m/s b. 5 m/s and 0 c/-2 m/s and -3 m m/s/s d. -2m/s and
A 300 g baseball traveling at 30m/s is struck by a bat in the direction from which it came at 40 m/s. find the impulse of the force on the baseball.
During level airplane flight at a constant velocity, the pressure created by air flowing over the curved upper surface of the wing compared to the pressure created by air flowing along the flat underside of the wing is a. less b. insufficient data c. the same d. more.
1. Find the total energy of the system at the given instant if the 20 kg disc has an angular velocity of 24 rad/s (clockwise), the bar AB has a mass of 2 kg, and the system is 1.5 meters above the ground. Assume the ground as the datum line (zero potential energy). a. 353 J b. 389 J c. 294 J d. 323 J e. 429 J
A 3.16 kg block of wood rests on the muzzle opening of a vertically oriented rifle, the stock of the rifle being firmly planted on the ground. When the rifle is fired, an 8.10 g bullet (velocity = 850 m/s, straight upward) becomes completely embedded in the block. (a) Using the conservation of linear momentum, find the velocity
1) A 0.170 kg projectile (bullet) is fired with a velocity of +720 m/s at a 2.00 kg wooden block that rests on a frictionless table. The velocity of the block, immediately after the projectile passes through it, is +40.0 m/s. Find the velocity with which the projectile exits from the block. 2) A two-stage rocket moves in spac
In science, we calculate the displacement of an object (how far it travels) and the velocity of an object (how fast it is moving) using the displacement equation and the velocity equation. where x is the displacement of the object, measured in meters t is the amount of time that we analyze the movement of the object, measu
If a steel I-beam falls from the top of a 96 foot high building, how long before it hits the ground? (if an object is given an initial velocity v feet per second from a height of S feet it's height after t seconds is given by: S = -16t^2 + vt + s)
The momentum of a particle is proportional to the square of its velocity. True or false? Please also explain why.
A car travels along a straight road, heading West for 3 hours, and then travels NE on another road for 2 hours. If the car has maintained a constant speed of 55 mi/hr, how far is it from its starting point?
Question 4: An impulse air turbine has a total (on static) inlet pressure and temperature of 11,25 bar, 600 degrees K and exhausts to the atmosphere at 0.91 bar. The nozzle efficiency is 87% and its exit angle is 71 degrees. The rotor efficiency is 65%. If the blade speed if 190 m/s at the mean radius of 12cm, calculate the powe
A merry-go-round makes 24 revolutions in a 3.0-min ride. (a) What is it's average angular speed in rad/s? (b) What are the tangential speed of two people 4.0 m and 5.0 m from the center, or axis of rotation?
A "stability loop" of a combustor is a diagram showing equivalence ratio versus air mass flow conditions provided to the combustor. Sketch and explain the features of the stability loop.
An aircraft is flying at true airspeed of 270m/s, each jet engine producing 10,000 lb max thrust for a fuel flow of 0.3 kg/s. Noting that the lower calorific value of AVTUR (Jetfuel) is 42 MJ/kg, determine the engine's overall thermal efficiency in this operating condition.
Two spheres collide on a horizontal frictionless surface. The first sphere has mass 1.0 kg is initially moving at 3.0 m/sec, the second sphere has mass 2.0 kg is intially at rest. Show the algebraic steps what is the velocity of the first sphere after the collision? a) if there was an elastic collision b) if there was an
Question: A body oscillates with simple harmonic motion along the x-axis. Its displacement varies with time according to the equation x=5(pi/t +pi/3). The velocity (in m/s) of the body at t=1 second is equal to what value?
A 50 kg ice skater is moving at 5m/s when she grabs the loose end of the rope,the opposite end of which is tied to a pole.She then moves in a circle of radius 1M around the pole.What is the force exerted by the rope on her arms? I think F=M*V^2/r =250N am I right?
According to the Doyle log rule , the volume V in broad feet of a log of length L (feet) and diameter D (inches) at the small end is V= (D-4/4)^2 *L Find the rate at which the volume is changing with respect to D for a 12-foot long log whose smallest diameter is a.) 8 inches, b.) 16 inches, c.) 24 inches, and d.) 36 inche
A billiard ball approaches the rail at a speed of 15 m/s and an angle of 60 degrees, but rebounds at a speed of 10 m/s and an angle of 50 degrees. What is the change in momentum and use components?
Attached: physics1: Calculating speed, velocity physics2: Calculating height, slope, distance physics3: 1 question using velocity/speed to calcuate for distance
1) The figure (*see attachment) shows 11 paths through a region of uniform magnetic field. One path is a straight line; the rest are half circles. The table (*see attachment) gives the masses, charges and speeds of the 11 particles that take these paths through the field in the direction shown. Which path corresponds to which pa
1.) Suppose a car starts from a stop sign and moves along a straight road. Assume the distance traveled in t seconds is given by s (t) + t^2 = 3t. a.) How far has the car traveled after 5 seconds? [ find s(5) ] b.) The speed of the car at exactly 10 seconds after "flooring it", can be estimated by finding the average speed
2 practice quiz problems which I need help on. Please give explanation of each problem as well as the answer: 1) Member AB rotates about pin A at a constant 10 rad/s. What is the acceleration of point C at the instant shown? a) 13.4m/s^2 b) 7.51m/s^2 c) 17.2 m/s^2 d) 11.5 m/s^2 e) 9.63 m/s^2 2) Wheel A rotates counte
Please see attached file for problems.
Translate Noether's theorem into Hamiltonian mechanics. That is, define a symmetry for Hamiltonian mechanics (by translating the Lagrangian-definition), and prove that symmetries give rise to conserved observables.
Francesca, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from Dulles Airport . She notices that the string makes an angle of 25° with respect to the vertical while the aircraft accelerates for takeoff, which takes about 13.5 seconds. Estimate the takeoff spee
A student drops a ball from a height of 14.0m. How long does it take to hit the ground? What is its speed just as it hits the ground?
1) A transverse traveling wave on a cord is represented by D = 0.48 sin (5.6x +84t) where D and x are in meters and t in seconds. For this wave determine (a) the wavelength (b) the frequency (c) velocity (magnitude and direction) (d) amplitude and (e) maximum and minimum speeds of particles of the cord.