Two iron bolts of equal mass -- one at 110.°C, the other at 34°C -- are placed in an insulated container. Assuming the heat capacity of the container is negligible, what is the final temperature inside the container (c of iron = 0.450 J/gK)?
7-58. An 80.0kg man jumps from a height of 2.50m onto a platform mounted on springs. As the springs compress, the platform is pushed down a maximum distance of 0.240m below its initial position, and then it rebounds. The platform and springs have negligible mass. A) What is the man's speed at the instant the platform is depresse
Two astronauts (Fig.), each having a mass of 70.0 kg, are connected by a 11.0 m rope of negligible mass. They are isolated in space, orbiting their center of mass at speeds of 4.70 m/s. (a) Treating the astronauts as particles, calculate the magnitude of the angular momentum. (b) Calculate the rotational energy of the syst
In her hand a softball pitcher swings a ball of mass 0.251 kg around a vertical circular path of radius 59.5 cm before releasing it from her hand. The pitcher maintains a component of force on the ball of constant magnitude 30.2 N in the direction of motion around the complete path. The speed of the ball at the top of the circle
(See attached files for full problem descriptions with diagrams, units and proper equations) --- Let two particles of equal mass collide. Particle 1 has initial velocity , directed to the right, and particle 2 is initially stationary. Part A If the collision is elastic, what are the final velocities and of particles 1
(See attached files for full problem description with units and diagrams --- The figure is the velocity-versus-time graph for a 3.90 object moving along the x-axis. Determine the work done on the object during each of the five intervals AB, BC, CD, DE, and EF. --- Part A Use work and energy to find the speed of the 2.
A metal can containing condensed mushroom soup has mass 220 g, height 11.2 cm and diameter 6.38 cm. It is placed at rest on its side at the top of a 3.00 m long incline that is at 26.0° to the horizontal, and is then released to roll straight down. Assuming mechanical energy conservation, calculate the moment of inertia of the
Physics: Compression and speed of spring, acceleration of gravity, tension in a tightrope, speed of a wave
Please assist me with the attached 10 exam review problems. Compression and speed of spring, acceleration of gravity, tension in a tightrope, speed of a wave
Problem1: A neutron in a nuclear reactor makes an elastic head-on collision with a carbon atom initially at rest. (the mass of the carbon atom is 12 times that of the neutron.) what fraction of the neutron's kinetic energy is transferred to tha carbon atom? (express your answer in percent) Problem2: A 1400kg rocket sled at re
1) The figure shows 3 pairs of identical spheres that are to be touched together and then separated. The initial charges on them are indicated. Rank the pairs according to (a) the magnitude of the charge transferred during touching and (b) the charge left on the positively charged sphere, greatest first. The picture s
Energy conservation in oscillatory motion: Initial speed of a bullet; time for bullet-block system to come to rest
A 10.0 g bullet embeds itself in a 0.500 kg block, which is attached to a spring of force constant 36.0 N/m. If the maximum compression of the spring is 1.50 cm, find (a) the initial speed of the bullet and (b) the time for the bullet-block system to come to rest.
Energy conservation in oscillatory motion: block encounters an unstretched spring and compresses it 25 cm before coming to rest.
A 0.540 kg block slides on a frictionless, horizontal surface with a speed of 1.13 m/s. The block encounters an unstretched spring and compresses it 25 cm before coming to rest. (a) What is the force constant of this spring (b) How long is the block in contact with the spring before it comes to rest? (c) If the force co
Energy conservation in oscillatory motion: Strategy to find speed of mass when it is halfway to the equilibrium position
A 0.40 kg mass is attached to a spring with a force constant of 26 N/m and released from rest a distance of 3.2 cm from the equilibrium position of the spring. (a) Give a strategy that allows you to find the speed of the mass when it is halfway to the equilibrium position. (b) Use your strategy to find the speed.
2. [SJ3 8.P.047.] Tarzan, whose mass is 75.0 kg, swings from a 3.00 m vine that is horizontal when he starts. At the bottom of his arc, he picks up 55.0 kg Jane in a perfectly inelastic collision. What is the height of the highest tree limb they can reach on their upward swing?
You (A) are in a sledge sliding down an inclined plane. (Friction is neglected). An observer (B) at the foot of the plane looks at your initial position at the top of the slide and sees your energy as potential energy (mgh). You (A) slide down to the bottom of the plane and have a velocity of V0. So, the observer sees mgh = m
1. A man can throw a stone of mass 0.5kg upwards with a velocity of 10m/s. Using the conservation of energy equation find the maximum height that the stone can reach. 2. A hydroelectric power station has water falling from a reservoir at a height of 100 m above the turbine. If the water flow is 0.25 m3/s and the overall effic
1) A boxer is struck by an opponent causing him to rotate about a vertical axis with an angular velocity of one revolution per second while his arms are extend horizontally with a 12-kg glove on each hand. He drops his hands to his sides hoping that the increase in angular velocity will cause the next blow to glance off him. If
A ball, solid cylinder and a hollow pipe all have equal masses and radii. If the three are released simultaneously at the top of an inclined plane, which will reach the bottom first? a. the cylinder b. the pipe c. the ball d. none of the listed
Two baseballs, each with a mass of 0.122 kg, are separated by a distance of 950 m in outer space. If the balls are released from rest, what speed (in m/s) do they have when their separation has decreased to 370 m? Ignore the gravitational effects from any other objects.
Assuming negligible friction, what spring constant would be needed by the spring in a "b-b gun" to fire a 10g pellet to a height of 100m if the spring is initially compressed 10cm?
Suppose the roller coaster in Fig. 8-29 (attached) (h1 = 32 m, h2 = 13 m, h3 = 20) passes point A with a speed of 3.00 m/s. If the average force of friction is equal to one fifth of its weight, with what speed will it reach point B? The distance traveled is 55.0 m.
A 2.0 kg block slides along a horizontal surface with a coefficient of friction µk = 0.30. The block has a speed of v = 1.2 m/s when it strikes a massless spring head-on (as in Fig. 8-18). (a) If the spring has a force constant k = 120 N/m, how far is the spring compressed? (b) What minimum value of the coefficient of s
If you stand on a bathroom scale, the spring inside the scale compresses 0.50 mm, and it tells you your weight is 665 N. Now if you jump on the scale from a height of 1.3 m, what does the scale read at its peak?
A black of mass m=750g is released from rest and slides down a frictionless track of height h=55.2cm. At the bottom of the track the block slides freely along a horizontal table until it hits a spring attached to a heavy, immovable wall. The spring compressed by 2.64cm at the maximum compression. What is the value of the spring
A 58 kg skier is coasting down a 25 degree slope. A kinetic frictional force of 70-N opposes her motion. Her initial speed is 3.6 m/s at the top of the slope. Ignoring air resistance, determine her speed at a point located 57m down the slope.
Please do not place your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Please see attached for actual problem. Note that I only need help with the last part of this problem!
Place a kilogram block of iron at 40 degrees C into a kilogram of water at 20 degrees C. What will the final temperature of the two become, and why?
There are two main types of collisions that you will study: elastic and perfectly inelastic. In an elastic collision, kinetic energy is conserved. In a perfectly inelastic collision, the particles stick together and thus have the same velocity after the collision. There is actually a range of collision types, with elastic and pe
A mass of 336 kg falls through a distance of 17.5mm on to the stop at the lower end of a vertical steel bar which is 5.2 metres long and 735 square mm in cross section area. If the modulus of elasticity is equal to 210 GPascals for the bar, find a) instantaneous elongation b) the stress in the bar Please provide detai
An aluminum rod has a mass of 4.5 kg and is initially at room temperature of 23 degrees Celsius. The rod is dropped into an aluminum tank whose mass is 1.22 kg, containing an unknown mass of water. The tank and the water are at 96 degrees Celsius. Heat exchange occurs only between the rod, the tank and the water, all of which e