130 lb person sitting in a 150 lb iceboat fires a gun, discharging a 2 oz bullet horizontally. If the bullet speed leaving the gun is 1200 ft/s, what will be the speed of the boat after the bullet is fired, if we assume no friction? The correct answer is 0.54 ft/s

Q: A 10 kg block is released from rest at the top of a 40 degree incline that is 4 m long. If the…

A: mass of object = 10 kginitial velocity ,u= 0 m/sdistance moved on inclined surface,d= 4 mangle of…

Q: Two pole-vaulters just clear the bar at the same height. The first lands at a speed of 8.90 m/s, and…

A:

Q: A 15 g bullet traveling parallel to an inclined ramp strikes a 2.74 kg block of wood and becomes…

A:

Q: A 5 kg block falls from rest down a 7 m high frictionless hill. It collides with a stationary 2 kg a…

A:

Q: The mass of a base ball is 1.495lb. Determine its kinetic energy relative to home plate of a 96.65…

A: Given value--- mass = 1.495 lb. speed = 96.65 mile per hour.  We have to find--- kinetic energy…

Q: A person of mass 71 kg is thrown down a slide until he falls into a swimming pool. The initial…

A: Mass (m) of a person = 71 kg     Height (h) of water = 12 m                     Speed (v) = 12.7802…

Q: Consider a horizontal friction free air track with two gliders each moving at 1 m/s and toward each…

A:

Q: How fast (in meters per second) must an iron ball with a mass of 42.2 g be traveling in order to…

A: Given,Mass of the iron ball, m = 42.2 gKinetic energy of the ball, KE = 12.49 J

Q: A 5 kg object is fired straight up with an initial speed of 300 m/s. Ignore air resistance and set…

A:

Q: A hammer held horizontally is allowed to swing down with the end of the handle held in place. The…

A: Given that : Weight of the hammer = 2 kg Ignoring the mass of the handle = 0.6 m After swinging down…

Q: A pendulum of mass m and length L is initially at rest at an angle 8. The pendulum then swings down…

A:

Q: A stationary but movable 400 kg cannon is fired, and the 10 kg cannonball moves off to the right…

A: Given: mass of the cannon, M=400 kg mass of cannon ball, m=10 kg velocity of the ball, v=20 m/s

Q: The reason why I used 2g instead than g is that I have to cancel  2 "g" from the left side. Meaning…

A: Given data: Velocity of the rollercoaster at the top of the first hill, v1=3.5 m/s Velocity of the…

Q: A 30-caliber rifle with a mass of 3.14 kg fires a 9.33- g bullet with a speed of 596 m/s with…

A: Given

Q: If a particle of mass 100 g initially had a speed of 100 cm/s, what would be its approximate kinetic…

A: In this question we have to find the kinetic energy at the end of 10 cm fall. Please give positive…

Q: 11. A bullet of mass 2 grams, travelling at 500 m/s is fired into a ballistic pendulum of mass 1 kg…

A:

Q: A firework accidently explodes while on the ground. The firework was initially at rest and breaks…

A: Given in question , that Mass of A = 2.6 times the Mass of B mA = 2.6 * mB   Momentum ( P ) of A and…

Q: A tennis ball bouncing on a hard surface compresses and then rebounds. The details of the rebound…

A: Given: The mass of the tennis ball is 57.5 g. The height from which it is dropped is 2.5 m. The…

Q: One end of a massless, 30-cm-long spring with spring constant 25 N/m is attached to a 250 g…

A: The length of the spring, with one end attached to the track, The spring constant, The mass of the…

Q: 16. A 20 000-kg meteorite from outer space is headed directly toward Earth with a speed of 3.0 km/s.…

A: The mass of the meteorite, m=20000 kg The speed of the meteorite, vi=3km/s The distance above the…

Q: A 22 g golf ball is placed at the top of a loop de loop track 45 cm above the top of a desk and…

A: Solution:   Given Values, mass(m)=22 g =0.022 Kg height(h)=45 cm=0.45 m

Q: A 4.0 kg box slides on a horizontal frictionless table and collides with a 1.6 kg box initially at…

A:

Q: An astronaut is playing with a ping pong paddle and ball in zero gravity. The astronaut is 12m from…

A:

Q: Two carts of equal mass are on a horizontal, frictionless air track. Initially cart A is moving…

A: Given values: Initial velocity of the cart A, vA Initial velocity of the cart B, vB=0 m/s

Q: A 50-g ball is shot into a chamber attached to a 500-g cart.  After the collision the ball/cart…

A: Given that the mass of the ball is (mb )= 50g = 0.050Kg let us assume that the the ball is moving…

Q: Tarzan really wants to sweep Jane off her feet. He is standing on a tree branch 6m above and away…

A: Given:Height of the tree branch from ground = 6 mDistance between the tree and the jane = 6 m

Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.