Which of the following measures the total kinetic energy of the particles in a substance?

A. mass

B. entropy

C. enthalpy

D. temperature

A proton is projected with a velocity of 7.0 km/s into a magnetic field of 0.60 T perpendicular to the motion of the proton. What is the magnitude of the magnetic force that acts on the proton? (e = 1.60 * 10-19 C)

Children in a tree house lift a small dog in a basket 4.00 m up to their house. If it takes 187 J of work to do this, what is the combined mass of the dog and basket?

What is the sum of the following set of three forces? Express the resultant force in Cartesian vector form, and give also the magnitude and direction of the resultant force.

Which is the best description of our solar system's current location in the milky way? a. in the halo b. in the nucleus c. in a major spiral arm d. between major spiral arms

Why is copper so widely sought world market and new york mercantile exchange?

A bicyclist is in a 50-km race. She says she had an average velocity of 35. What is missing in the cyclist's velocity? A. units only B. units and distance C. direction only D. units and direction

Which one of the following statements concerning emf is true? A) Emf is the work done in moving the current from one terminal to the other of an emf device.

A fan is a complex machine? True or false?

Which force does not operate at a distance of 1 m? A. Weak nuclear O B. Electric C. Gravitational D. Magnetic

The deflection of alpha particles in rutherford's gold foil experiments resulted in what change to the atomic model?