Recent content by togepyamy

A heat engine does 30.0 of work and exhausts 25.0 of waste heat during each cycle. Part A. What is the engine's thermal efficiency? I've used n=W_out/Q_H, but I didn't get the right answer. Is there another equation that I need to use or was that it?

thx for the help. It's greatly appreciated

Understanding Work and Kinetic Energy Mastering Physics Proble HW#9 Info: A 30.0 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.10 m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 110 g ball...

I used an applet provided by mastering physics

the glass had to do with this problem: For what value of the spring constant k does the woman just reach the glass without knocking it over?

I'm using mastering physics too...my professor's not too good at going over the materials we need for the assignment...I'm on my last assignment for the quarter which is #10 so I'm happy but also stuck

[FONT=Comic Sans MS]A woman finds herself in a very odd contraption. She sits in a reclining chair, on a freshly waxed floor, in front of a large, compressed spring. The spring is compressed 5.00 m from its equilibrium position, and a glass sits 19.8 m from her outstretched foot. Assuming the...