Recent content by jabbie3

Homework Statement A) How much energy is required to evaporate all the water in a swimming pool of area 119 m2 and depth 2.4 m on a typical summer day? (Please note that the temperature of the water in the lake stays the same.) (For latent heat of vaporization use 2200 kJ/kg.) B) The...

Homework Statement A simple pendulum uses a steel wire as the string. The length of this wire is 1.4 m at room temperature. If the temperature is increased by 11.9 degrees C, the length of the wire increases by 1.69 mm . What is the change in period of the pendulum? Homework Equations...

Homework Statement http://wug.physics.uiuc.edu/cgi/courses/shell/per/phys101/ie.pl?11/bobber#waypoint)" Homework Equations F=PbottomA-PtopA The Attempt at a Solution I'm not really sure where to start..I am still trying to understand fluids. It just doesn't feed well in my head...

Homework Statement A compact car and a large truck collide head on and stick together (perfectly inelastic collison). Which vehicle experiences the larger momentum change? Which vehicle experiences the larger acceleration during the collision? Explain your answers. Homework...

i tried that and I am not getting the right answer..i figured i would have to find the velocity in x and y before i find THE velocity..but i don't know where to start with that

Sorry i forgot the questions! (a) If the spring constant is 560 N/m, how fast is the mass moving when leaves the spring? (b) To what maximum distance from the starting point will the mass rise up the incline?

Homework Statement A spring is mounted at an angle of 29 degrees on a frictionless incline as illustrated in the figure below. The spring is compressed to 15 cm where it is allowed to propel a mass of 4.6 kg up the incline...

The initial is 8.93 and the final is -8.93..so total momentum is 0? In what direction?

Homework Statement A ball of mass 4.7 kg moving with speed of 1.9 m/s in the x-direction hits a wall and bounces back with the same speed in the -x-direction. What is the change of momentum of the ball? And in what direction? Homework Equations p=mv The Attempt at a Solution...

Is it .2744 Joules?

Potential Energy! Homework Statement A mass 0.40 kg is released and slides down the incline. The maximum velocity ( taken the instant before the mass reaches the bottom of the incline ) is 1.00 m/s. What is the kinetic energy at that time? What percentage of the potential energy of the...

The height is 7 cm (.007 m)

Homework Statement A mass 0.40 kg is released and slides down the incline. The maximum velocity ( taken the instant before the mass reaches the bottom of the incline ) is 1.00 m/s. What is the kinetic energy at that time? What percentage of the potential energy of the system is not converted...

I'm trying. I understand PE=mgy but it just isn't working for me.

Homework Statement A rock climber of mass 92.1 kg starts at the base of a cliff and climbs to the top (h = 33.8 m). He then walks along the plateau at the top for a distance of L = 289.9 m. (a) Find the work done by gravity. (b) What is the change in the gravitational potential energy...