A person is standing in an elevator that is traveling up but is slowing down. the upward normal force exerted by the floor on the person is

An electron enters a magnetic field of 0.66 T with a velocity perpendicular to the direction of the field. At what frequency does the electron traverse a circular path? (m el = 9.11 * 10-31 kg, e = 1.60 * 10-19 C)

Many species of bats find flying insects by emitting pulses of ultrasound and listening for the reflections. This technique is called echolocation. Bats possess several adaptations that allow them to echolocate very effectively.

In which situation will the lowest resistance occur?

The decomposition of water into hydrogen gas h2 and oxygen gas o2 can be moldled by the balanced chemical equation

What average force is required to stop a 1400 kg car in 6.0 s if the car is traveling at 90 km/h? Express your answer to two significant figures and include the appropriate units.

Cual es el peso de 5L de un fluido que tiene una densidad 3.5 veces mayor que la del agua?

Two identical particles of charge 6 μμC and mass 3 μμg are initially at rest and held 3 cm apart. How fast will the particles move when they are allowed to repel and separate to very large (essentially infinite) distance?

The chemical combination of two or more different atoms in fixed amounts is called a (n) element. compound. orbit. mixture.

Use each of the following terms in a separate sentence. 1. Thermal energy 2. First law of thermodynamics 3. Temperature 4. Specific heat

Describe how to prepare a 10.0% w/v solution of salt in water in a 100 mL volumetric flask