a dancer lifts his partner above his head with an acceleration of 2.25 m/s2. the dancer exerts a force of 209 N. what is the mass of the partner?

The whistle on a train produces a sound wave with a particular pitch. Which of the following best describes the whistle sound that a person perceives while the train approaches him or her? A. A higher pitch, then a lower pitch B. The same pitch C.

A puddle dries up by the process of awnsers a - melting b - freezing c-condensation Or D-evaporation

A 4.45 kg block of ice at 0.00? c falls into the ocean and melts. the average temperature of the ocean is 3.70? c, including all the deep water.

Which of the following school supplies is a good conductor of electricity?

A proton, moving west, enters a magnetic field of a certain strength. because of this magnetic field the proton curves upward. what is the direction of this magnetic field?

What are the differences between deterministic forces and thermal agitation?

What causes the acceleration to increase or decrease?

When You lift a load, the resistance force is? A. magnetism b. gravity

What changes a ball velocity

A rock with mass m = 3.60 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 15.