How does the total change (final minus initial) in the properties of a protostar from the beginning of this track to its end compare between a star with five times the mass of our Sun, and a star with the mass of our Sun? Careful: this is a logarithmic plot. A- A 5 MSun protostar changes its temperature more than a 1 MSun protostar. B- A 5 MSun protostar changes its luminosity more than a 1 MSun protostar. C- A 5 MSun protostar changes its radius more than a 1 MSun protostar.

Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?

Find v1, the speed of the fluid in the left end of the main pipe. express your answer in terms of h1, h2, g, and either a1 and a2 or γ, which is equal to a1a2.