Recent content by rmarkatos

Fx -Tcos20 - Fsin20 = mv^2/r Fy -Tsin20 + Fcos20 - mg = 0 where T is the tension and F is the aerodynamic lift Those are the equations based on the picture described.

Fx -Tcos20 - Fsin20 = mv^2/r Fy -Tsin20 + Fcos20 - mg = 0 where T is the tension and F is the aerodynamic lift Those are the equations based on the picture described.

A model airplane of mass 7.50 with a speed 35m/s flies in a horizontal circle at the end of 60.0m control wire. Aerodynamic lift acts on the plane at an angle of 20 degrees West of North. In the picture the book has the plane on the right. The weight is acting straight down, the tension is...

A model airplane of mass 7.50 with a speed 35m/s flies in a horizontal circle at the end of 60.0m control wire. Aerodynamic lift acts on the plane at an angle of 20 degrees West of North. In the picture the book has the plane on the right. The weight is acting straight down, the tension is...

Homework Statement We need to find magnetic North and south on some different solenoid arrangements (meaning the wires are arranged in pointing in different directions) Homework Equations The Right Hand Rule for Solenoids The Attempt at a Solution In class we were told the...

I just have a basic question about waves and diffraction because i am not really clear on that part. What is the relationship between say an opening and the wavelength. For example i am not sure if there is a smaller opening with a large wavelegnth, will a lot of diffraction occur.

thanks for the help everyone.......

Our sun rotates in a circular orbit about the center of the Milky Way Galaxy. The radius of the orbit is 2.2x10^20 m, and the angular speed of the sun is 1.2x10^-15 rad/s. (a) What is the tangential speed of the sun? (b) How long (in years) does it take for the sun to make one revolution around...

I really do not understand what you mean by that, my textbook does not do a good job of explaining it

the line you drawn is in between the Earth and moon? and you pick a point that is on line in between the moon and earth?

The Earth and moon are separated by a center-to-center distance of 3.85x10^8m. The mass of the Earth is 5.98x10^24kg and that of the moon is 7.35x10^22kg. How far does the center of mass lie from the center of the earth? I know you have to use the equation Xcm=m1x1+m2x2/m1+m2 I don't...

ohhhhh your right thanks for clearing that up for me that makes a big difference

would the kinetic energy of the system just be the kinetic energy of the object the first car since the second one was stationary. By the way the answer to the question is .559J from the odd selected answer section but i am not sure how to get the answer ke=1/2mv^2 (1/2)(1550kg)(12m/s)^2...

A 1550kg car, traveling with a velocity of 12m/s plows into a 1220kg stationary car. During the collision the two cars lock bumpers and then move together as a unit. (a) what is tehir common velocity just after the impact? (b) What fraction of the initial kinetic energy remains after the...

I am pretty sure i have this question correct but i want to make sure it is likely to show up on a test An astronaut is motionless in outer space. Upon command the propulsion unit strapped to his back ejects some gas with a velocity of 32m/s and the astronaut recoils with a velocity of...