KTB World
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03:55
Sketch a PV diagram of the following process: 2.5 L of ideal gas at atmospheric pressure is cooled
KTB World
Shared 21/06/2024
05:50
One liter of air is cooled at constant pressure until its volume is halved, and then it is allowed
KTB World
Shared 21/06/2024
05:20
To what temperature would you have to heat a brass rod for it to be 1.5% longer than it is at 25°C?
KTB World
Shared 13/06/2024
05:44
A 1.65-kg mass stretches a vertical spring 0.215 m. If the spring is stretched an additional 0.130 m
KTB World
Shared 05/06/2024
03:41
An object of unknown mass m is hung from a vertical spring of unknown spring constant k, and the
KTB World
Shared 05/06/2024
03:11
At what displacement of a SHO is the energy half kinetic and half potential?
KTB World
Shared 04/06/2024
05:19
A parallel beam of light from a He–Ne laser, with a wavelength 633 nm, falls on two very narrow
KTB World
Shared 02/06/2024
05:13
Light of wavelength λ passes through a pair of slits separated by 0.17 mm, forming a double-slit
KTB World
Shared 02/06/2024
04:12
Light of wavelength 680 nm falls on two slits and produces an interference pattern in which the
KTB World
Shared 02/06/2024
05:19
V is a vector 24.8 units in magnitude and points at an angle of 23.4° above the negative x axis. (a)
KTB World
Shared 12/05/2024
05:45
Vector V1 is 6.6 units long and points along the negative x axis. Vector V2 is 8.5 units long and
KTB World
Shared 12/05/2024
09:46
Graphically determine the resultant of the following three vector displacements: (1) 24 m, 36° north
KTB World
Shared 11/05/2024
03:01
When an object such as a plastic comb is charged by rubbing it with a cloth, the net charge is
KTB World
Shared 11/05/2024
01:58
Two charged dust particles exert a force of 4.2 x 10^-2 N on each other. What will be the force if
KTB World
Shared 11/05/2024
02:20
Two small charged spheres are 6.52 cm apart. They are moved, and the force each exerts on the other
KTB World
Shared 11/05/2024
01:24
If the electric field in an EM wave has a peak magnitude of 0.72 x 10^-4 V/m. what is the peak
KTB World
Shared 11/05/2024
02:59
A 1500-nF capacitor with circular parallel plates 2.0 cm in diameter is accumulating charge at the
KTB World
Shared 11/05/2024
02:16
An ideal gas expands isothermally, performing 4.30 x 10^3 J of work in the process. Calculate (a)
KTB World
Shared 11/05/2024
06:26
A red laser from the physics lab is marked as producing 632.8-nm light. When light from this laser
KTB World
Shared 09/05/2024
05:51
Water waves having parallel crests 4.5 cm apart pass through two openings 7.5 cm apart in a board
KTB World
Shared 09/05/2024
05:45
If 720-nm and 660-nm light passes through two slits 0.62 mm apart, how far apart are the second
KTB World
Shared 09/05/2024
03:07
A concrete highway is built of slabs 12 m long (15°C). How wide should the expansion cracks between
KTB World
Shared 07/05/2024
01:39
The Eiffel Tower (Fig. 13–31) is built of wrought iron approximately 300 m tall. Estimate how much
KTB World
Shared 07/05/2024
03:14
Super Invar, an alloy of iron and nickel, is a strong material with a very low coefficient of
KTB World
Shared 07/05/2024
04:08
Four 1.50-V cells are connected in series to a 12-Ohm lightbulb. If the resulting current is 0.45 A
KTB World
Shared 03/04/2024
02:58
A wheel 31 cm in diameter accelerates uniformly from 240 rpm to 360 rpm in 6.8 s. How far will a
KTB World
Shared 09/02/2024
02:42
At what displacement of a SHO is the energy half kinetic and half potential?
KTB World
Shared 01/02/2024
05:08
A vertical spring with spring stiffness constant 305 N/m oscillates with an amplitude of 28.0 cm
KTB World
Shared 01/02/2024
03:06
Figure 11–51 shows two examples of SHM, labeled A and B. For each, what is (a) the amplitude, (b)
KTB World
Shared 01/02/2024
03:18
A balsa wood block of mass 52 g floats on a lake, bobbing up and down at a frequency of 3.0 Hz. (a)
KTB World
Shared 01/02/2024