05:35
A logic chip used in a computer dissipates 3 W of power in an environment at 120°F, and has a heat t
07:09
A 15-cm-diameter aluminum ball is to be heated from80°C to an average temperature of 200°C. Taking t
21:25
A fabric used in air-inflated structures is subjected to a biaxial loading that results in normal st
12:39
A material point is observed to start yielding at the state of plane stress represented in the figur
06:41
For the given state of stress, determine (a) the orientation of the planes of maximum in-plane shear
02:52
When walking toward a concave mirror you notice that the image flips at a distance of 0.50 m. What i
05:04
How far from a concave mirror (radius 24.0 cm) must an object be placed if its image is to be at inf
05:29
A solar cooker, really a concave mirror pointed at the Sun, focuses the Sun's rays 18.8 cm in front
07:16
Two plane mirrors meet at a 135 angle, Fig. 32-45. If light rays strike one mirror at 38' as shown,
12:44
The block of glass (n = 1.5) shown in cross section in Fig. 32-51 is surrounded by air. A ray of lig
01:48
The speed of light in ice is 2.29 X 10^8 m/s, What is the index of refraction of ice?
05:33
A light beam coming from an underwater spotlight exits the water at an angle of 56.0'. At what angle
12:56
A light beam strikes a 2.0-cm-thick piece of plastic with a refractive index of 1.62 at a 45 angle.
06:52
Rays of the Sun are seen to make a 33.0 angle to the vertical beneath the water. At what angle above
05:00
A flashlight beam strikes the surface of a pane of glass(n = 1.56) at a 63' angle to the normal. Wha
05:04
A diver shines a flashlight upward from beneath the water at a 38.5° angle to the vertical. At what
03:48
A helium-filled balloon escapes a child's hand at sea level and 20.0 C. When it reaches an altitude
10:03
It is observed that 55.50 mL of water at 20' C completely fills a container to the brim. When the co
06:29
What is the pressure inside a 38.0-L container holding 105.0 kg of argon gas at 20.0'C?
18:52
A police car sounding a siren with a frequency of1280 Hz is traveling at 120.0 km/h. (a) What freque
06:58
Two automobiles are equipped with the same single frequency horn. When one is at rest and the other
07:08
A bat at rest sends out ultrasonic sound waves at50.0 kHz and receives them returned from an object
04:51
The predominant frequency of a certain fire truck's siren is 1350 Hz when at rest. What frequency do
10:15
A jet plane emits 5.0 X 105 J of sound energy per second. (a) What is the sound level 25 m away? Ai.
08:03
At a rock concert. a dB meter registered 130 dB when placed 2.2 m in front of a loudspeaker on the s
07:06
A person standing a certain distance from an airplane with four equally noisy jet engines is experie
08:28
If two firecrackers produce a sound level of 95 dB when fired simultaneously at a certain place, wha
02:34
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff
05:52
A mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other e
08:48
A 0.35-kg mass at the end of a spring oscillates 2.5 times per second with an amplitude of 0.15 m. D
06:04
(a) At what displacement of a SHO is the energy half kinetic and half potential? (b) What fraction o
10:42
A 1.15-kg mass oscillates according to the equation x = 0.650 cos 7.401 where x is in meters and I i
09:44
A bungee jumper with mass 65.0 kg jumps from a high bridge. After reaching his lowest point, he osci
05:09
An object of unknown mass m is hung from a vertical spring of unknown spring constant k, and the obj
05:56
A 1.25-kg mass stretches a vertical spring 0.215 m. If the spring is stretched an additional 0.130 m
06:24
Figure 14-29 shows two examples of SHM, labeled A and B. For each, what is (a) the amplitude, (b) th
16:48
A shop sign weighing 215 N is supported by a uniform 155-N beam as shown in Fig. 12-59. Find the ten
05:09
A marble column of cross-sectional area 1.4 m^2 supports a mass of 25,000 kg. (a) What is the stress
04:59
A nylon string on a tennis racket is under a tension of 275 N. If its diameter is 1.00 mm, by how mu
15:56
(a) Calculate the magnitude of the force, FM, required of the "deltoid" muscle to hold up the outstr
12:48
Calculate FA and FB for the beam shown in Fig. 12-55.The downward forces represent the weights of ma
16:55
A traffic light hangs from a pole as shown in Fig. 12-60.The uniform aluminum pole AB is 7.20 m long
11:43
A 110-kg horizontal beam is supported at each end. A320-kg piano rests a quarter of the way from one
08:01
Two cords support a chandelier in the manner shown in Fig 12-3 except that the upper cord makes an a
14:13
Three forces are applied to a tree sapling, as shown in Fig. 12-45, to stabilize it. If FA = 385 N a
10:16
A uniform steel beam has a mass of 940 kg. On it is resting half of an identical beam, as shown in F
16:29
A 75-kg adult sits at one end of a 9.0-m-Iong board. His 25-kg child sits on the other end. (a) Wher
06:20
The intensity of an earthquake wave passing through the Earth is measured to be 3.0 X 106 J/m2·s at
04:38
A sailor strikes the side of his ship just below the surface of the sea. He hears the echo of the wa
04:03
A pilot performs an evasive maneuver by diving vertically at 310 m/s. If he can withstand an acceler
08:48
Calculate FA and FB for the uniform cantilever shown in Fig. 12-7 whose mass is 1200 kg.
09:58
How close to the edge of the 24.0-kg table shown in Fig. 12-53 can a 66.0-kg person sit without tipp
03:18
A laser beam is directed at the Moon, 380,000 km from Earth. The beam diverges at an angle 0 (Fig. 1
05:26
Two blocks, each of mass m, are attached to the ends of a massless rod which pivots as shown in Fig.
14:59
Two masses, mA = 35.0 kg and mB = 38.0 kg, are connected by a rope that hangs over a pulley (as in F
10:37
To get a flat, uniform cylindrical satellite spinning at the correct rate, engineers fire four tange
02:38
A fisherman notices that wave crests pass the bow of his anchored boat every 3.0 s. He measures the
13:14
(a) A brass plug is to be placed in a ring made of iron. At 15 C, the diameter of the plug is 8.753
09:56
If 14.00 mol of helium gas is at 10.0'C and a gauge pressure of 0.350 atm, calculate (a) the volume
08:40
A 3.25-kg piece of wood (SG = 0.50) floats on water. What minimum mass of lead, hung from the wood b
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About
Welcome! This channel posts videos about math, physics, and engineering. Its purpose is to assist college students with their homework problems and to explain engineering topics. I know how tough engineering and physics can be, so I wanted to create something to help students who may be lost or struggling with their classes. Please do not just copy down the work from the videos, and instead use it as a resource to help you understand how to solve the problems. The habits you build now as students will shape who you become for the rest of your lives, so cheating will only end up hurting yourself. If you have any questions about the problems, please comment below and I will try my best to help. Hopefully, you find these videos helpful! :)
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