Explain the differences between a physical and chemical change, and give examples of each.

An object's weight is dependent upon its location in the universe. Why is this true? A. This is true because weight is the amount of matter in an object.

A 139-turn circular coil of radius 2.13 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. during 0.175 s the magnetic field strength increases from 57.7 mt to 92.1 mt.

You have a simple harmonic oscillator. Where is its acceleration zero?

What type of crime is committed when a hacker steals someones's bank accounts information

What is the frequency of a simple pendulum 2.7 m long in the following situations? (a) in a room that is stationary Hz (b) in an elevator accelerating upward at a rate of 1.1 m/s2 Hz (c) in free fall Hz

A wave has a wavelength of 50 m and a speed of 200 m/s. What is the frequency of this wave in hertz?

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.

A capacitor with initial charge q0 is discharged through a resistor. What multiple of the time constant τ gives the time the capacitor takes to lose (a) the first 1/8-th of its charge (b) 7/8-th of its charge?

A sheet of paper has a mass of 5 grams. The paper is dropped from a high building twice (it reaches terminal speed in both cases), once as a flat paper of area 600 cm2 and once crumpled as a ball of radius 2 cm.