Awoman eats a cupcake and proposes to work off its 400-kj content by exercising with a 15-kg barbell. if each lift of the barbell from the chest height to overhead is through 60 cm and the efficiency of her body under these circumstances is 10% how many times must she lift the barbell?

Research the neutrino using the internet and report your findings. in a nuclear decay, the nucleus of an atom splits apart. larger particles can be detected and their masses and velocities can be recorded. explain how the existence and properties of the neutrino could be predicted using the conservation laws.

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?