Which type of wave is classified as electromagnetic?

A) Sound

B) Light

C) Water

D) Seismic

FOR USA TEST PREP!

An iron nail floats in mercury and sinks in water. Explain why?

At what stage of a reaction do atoms have the highest energy? a. reactant stage b. product stage c. transition state stage d. The stage of highest energy depends on the atom.

The loudness of a sound wave is affected by the wave's A. pitch B. frequency C. amplitude D. wavelength

Num determinado equipamento industrial, um líquido de calor específico 0,50 cal/g.°C, entra a 20 °C e sai a 80 °C. Se a vazão desse líquido no equipamento é de 50 kg/min, a potência térmica é, em kcal/min, de:

12. A boy of mass 50 kg running 5m/s jumps on to a 20kg trolley travelling in the same direction at 1.5m/s. Find their common velocity. Assume that there is no external unbalanced force working in the horizontal direction.

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.