4. What is the structural classification of the Milky Way galaxy? A. Elliptical galaxy B. Barred spiral galaxy C. Irregular galaxy

Sound propagates through a soft-tissue medium and strikes another soft tissue.What is the approximate amount of transmission at this interference? A 100% B 99% B C 1% D 50%

Depth of Gate=2cm PRP=26mu s (2cmtimes 13mu s) PRF=38.5kHz(77,000(cm)/(s)div 2cm=38,500Hz) NL=19.25kHz((38.5kHz)/(2))

What is the final pressure when the temperature of a cylinder of oxygen at 1800 psig is increased from 50^circ F to 110^circ F

The degree of thickness of a liquid is called: a. viscosity. b. opacity c. viability. d. density.

__ is a form of energy transport consisting of electromagnetic waves traveling at the speed of light. a. Convection b. Radiation c. Conduction

How far does light travel in one year?[This distance is known as a light-year (ly) and is used in measuring astronomical distances.] square km

What's a concern with cargo in the passenger compartment of your vehicle? In a crash, G-forces make almost anything a dangerous projectile It keeps passengers from sitting in the correct upright position needed to make the seat belt effective It can lead to bad vehicle housekeeping, and objects potentially rolling under your brake pedal

8) Stopping a vehicle with good brakes from 20 miles per hour under good conditions requires about: a) 63 feet including thinking distance b) 80 feet including thinking distance c) 128 feet including thinking distance d) 186 feet including thinking distance

The radius of our Sun is 6.96times 10^8m and its total power output is 3.85times 10^26W (a) Assuming the Sun's surface emits as a black body, calculate its surface temperature. __ K (b) Using the result of part (a), find lambda _(max) for the Sun. square nm

Hot Questions

1. Choose the correct statement or equation. When a wave in a string reflects from an open or flexible end, the reflected wave has the same wavelength and amplitude as the original wave. When a wave in a string reflects from a fixed end, the reflected wave has the same wavelength and amplitude as the original wave.

In what ways are meteorites different from meteors? What is the probable origin of each? Meteors typically come from comets that have passed through the solar system; their solid material is freed when the ice is vaporized by the heat of the Sun. Meteorites miss the atmosphere whereas meteors hit the outer layers only. Most meteors come from Mars and carry important information about the past of the red planet. Meteorites are large enough to withstand the violent passage through Earth's atmosphere, whereas meteors burn up from the heat of friction. Most meteorites, on the other hand, are from asteroids or from debris kicked up on the Moon or Mars during an impact.

If a rock is dropped from a height of 87 ft, its poistion t seconds after it is dropped until it hits the ground is given by the function $s(t)=-16t^{2}+87$ Round values below to 3 decimal places. How long does it take the rock to hit the ground? $\square $ seconds Find the average velocity of the rock from when it is released until when it hits the ground. $\square $ feet per second What time after the rock is thrown will its instantaneous velocity be equal to its average velocity? (Apply the Mean Value Theorem) $\square $ seconds after it is thrown

The bending or change in angle of light as it passes through a lens is called $\square $

Photons of a certain infrared light have an energy of $1.91\times 10^{-19}J$ (a) What is the frequency of this IR light? $\square $ Hz (b) Use $\lambda =c/f$ to calculate its wavelength in nanometers. $\square $ nm

The outer planets of the solar system were formed by asteroid agglomeration comet collisions gravitational forces temperature increases

Multiple Choice 2 points Step 3 of Part 2: The flashlight is shining to an azimuth of 225 degrees. What is the azimuth of the shadow? 0 degrees 45 degrees 90 degrees 180 degrees

1) The height of the Washington Monument is measured to be 170 m on a day when the temperature is $35.0^{\circ }C$ What will its height be on a day when the temperature falls to $-10.0^{\circ }C$ Although the monument is made of limestone, assume that its thermal coefficient of expansion is the same as marble's.

A point is subjected to 5 ksi biaxial tension. The diameter of the corresponding Mohr's circle is most nearly: O 5 ksi 7.07 ksi 10 ksi

A ball is thrown vertically upward. After r seconds, it's height him feet) is given by the function $h(t)=40t-16t^{2}$ After how long will It reach its maximum height? Do not round your answer. Time: $\square $ seconds