An elevator accelerates upward at 1.2 m/s 2. the acceleration of gravity is 9.8 m/s 2. what is the upward force exerted by the floor of the elevator on a (n) 67 kg passenger? answer in units of n

1. Which of the following would not be found on the electromagnetic spectrum? A. The wavelengths of electromagnetic radiation B. The frequency of electromagnetic radiation C. The colors of visible light D. The pitch of a sound wave

Which surface winds blow between the subtropical high and the equator A) trade winds B) polar easterlies C) sea breezes D) westerlies

What wavelength? should the astrophysicist look for to detect a transition of an electron from the n=7 to the n=3 level?

What happens when a current moves through a wire and the wire is placed near a magnet

A piece of soft iron is placed in a solenoid increasing the magnetic field in an arrangement that can be switched on and off. Such a device is calleda. a hysteresis loop. b. an electrosolenoid. c. a permanent magnet. d. a ferromagnet.

What is the difference between low back and high back seat covers?

What happens to the resistance of a wire as its length increases? A. The resistance decreases. B. The resistance is not affected by a change in wire length. C. The resistance alternates between high and low values. D. The resistance increases.

What happens when an ionic compound is melted? a. It turns into a gas b. It loses its charge c. It forms crystals d. It conducts electricity

A book has a mass of 50 grams and an acceleration of 5 m/s/s. What is the force on the book? 220 N 20 N 250 N 10 N

A ball is tied to the end of a cable of negligible mass. The ball is spun in a circle with a radius 2.00 m making 0.700 revolutions per second. What is the centripetal acceleration of the ball?