Recent content by Fendergutt

Thanks a lot for the help, both of you.

Homework Statement A water heater gathers energy with the help of solar collectors on the roof, where water circulates in pipes and are provided heat from the sunrays that get through a transparent cover. The water is then pumped down in a tank inside the house. What area must the...

Homework Statement A grandfather pendulum clock is to be moved from a location at sea level to a new location approximately 200 m up in height. We assume that the Earth's radius is 6400 km. We know Newton's gravitational law and the oscillation equation for a pendulum. (*) How much...

Ah, so you are saying to me: Angular momentum is a conserved quantity: a system's angular momentum stays constant unless an external torque acts on it. Then I set up T_white = ( I_white * 2pi * k ) / L which gives a rotation period of 1.5E2 s or 150 s. (Mathematically: L features numbers...

Homework Statement The Sun rotates about its own axis once every 26.0 days. Its mass is m_sun = 2.0E30 kg and radius is r_sun = 7.0E8 m. Assume that the Sun is a solid sphere with uniform density. Astrophysicists predict that the Sun will collapse into a white dwarf in some billions of...

Homework Statement A 2.00 kg particle is moved from the coordinates (1.00, 3.00) m to (5.00, 7.00) m. (q1) How much work is done by the force F = <2x^2, 0> on the particle? (Assume that the force is in Newton when x is in metres.) (q2) If the particle has start velocity v_i = <0, 4.00...