The eyepiece lens of a telescope is used to __ the image brighten create magnify project
How many collisions occur in a crash? Five One None Three
What frequency range contains the fundamental of most instruments? 20-200hz 1000-5000hz 200-1000hz 5000-20,000hz
1. The first natural satellite that humans landed on is part of which system? A. Jupiter and its moons B. The Earth-Moon system C. The Andromeda Galaxy
What is the unit of electrical resistance? Amp Amp per volt Volt Ohm
A golf ball is struck across a flat fairway at an angle of 60^circ with an initial speed of 135ft/s a.). Write a set of parametric equations for the motion of the golf ball. b.). Determine how long the golf ball was in the air. c.). Determine how far the golf ball traveled in the air. Show all work. Use the Equation Editor. x=v_(0)cos(Theta )t Recall, y=-(1)/(2)(g)t^2+v_(0)sin(Theta )t+h g=32ft/sec/sec
What must increase along with the amount of load in a motor? a) Torque b) Speed c) Rotation d) Pressure 11
A pump increases the pressure of a fluid and adds energy to the system. True False
If 1.4 mol of dust particles were laid end to end along the equator, how many times would they encircle the planet? The circumference of the Earth at the equator is 40,076 km. Express your answer using two significant figures.
What action is necessary to make an aircraft turn? Change the direction of thrust. Yaw the aircraft. Change the direction of lift.
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
