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linds
Questions (31)
A baseball pitcher throws a baseball with a speed of 48 m/s . In throwing the baseball, the pitcher accelerates it through a
2 answers
1,111 views
The proportion of adults in the US with basic literary skills is 43%. If a hypothesis test is performed on this, how should you
1 answer
512 views
Using the Bohr model, estimate the wavelength ë of the Ká characteristic X-ray for a metal an atom of which contains Z = 50
0 answers
457 views
An object is moving along a straight line and the uncertainty in its position is 1.1 m.
(a) Find the minimum uncertainty in the
2 answers
2,560 views
A diffraction pattern forms when light passes through a single slit. The wavelength of the light is 680 nm. Determine the angle
0 answers
811 views
A diffraction pattern forms when light passes through a single slit. The wavelength of the light is 680 nm. Determine the angle
1 answer
1,400 views
Two stars are 3.80 1011 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of
1 answer
736 views
The far point of a nearsighted person is 5.8 m from her eyes, and she wears contacts that enable her to see distant objects
0 answers
1,018 views
The far point of a nearsighted person is 5.8 m from her eyes, and she wears contacts that enable her to see distant objects
0 answers
517 views
A converging lens (f = 12.6 cm) is held 8.55 cm in front of a newspaper, the print size of which has a height of 2.10 mm.
(a)
1 answer
1,312 views
The image produced by a concave mirror is located 27 cm in front of the mirror. The focal length of the mirror is 13 cm. How far
1 answer
1,135 views
Light is incident from air onto the surface of a liquid. The angle of incidence is 50.7°, and the angle of refraction is
0 answers
674 views
A distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding
1 answer
4,182 views
A distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding
0 answers
739 views
Suppose that a police car on the highway is moving to the right at 26 m/s, while a speeder is coming up from almost directly
1 answer
791 views
Suppose that a police car on the highway is moving to the right at 26 m/s, while a speeder is coming up from almost directly
1 answer
499 views
A 33.0-mH inductor has a reactance of 2.20 kΩ.
(a) What is the frequency of the ac current that passes through the inductor? (b)
1 answer
609 views
1. A 26.0-Ω resistor, a 12.0-µF capacitor, and a 17.0-mH inductor are connected in series with a 150-V generator.
(a) At what
1 answer
727 views
1. A 26.0-Ω resistor, a 12.0-µF capacitor, and a 17.0-mH inductor are connected in series with a 150-V generator.
(a) At what
3 answers
1,342 views
A 33.0-mH inductor has a reactance of 2.20 kΩ.
(a) What is the frequency of the ac current that passes through the inductor? (b)
1 answer
619 views
A 33.0-mH inductor has a reactance of 2.20 kΩ.
(a) What is the frequency of the ac current that passes through the inductor? (b)
1 answer
1,380 views
In a series circuit, a generator (1254 Hz, 13.8 V) is connected to a 15.5-Ω resistor, a 4.25-µF capacitor, and a 5.32-mH
0 answers
546 views
A series circuit contains only a resistor and an inductor. The voltage V of the generator is fixed. If R = 20 Ω and L = 2.8 mH,
0 answers
451 views
Danny sails a boat downstream. The wind pushes the boat along at 21 km/hr. The current runs downstream at 15 km/hr. What is the
2 answers
1,434 views
Suerat made paintings in which separate dots of color are placed close together on the canvas, and from a distance they merge in
1 answer
633 views
In a single-slit diffraction pattern on a flat screen, the central bright fringe in 1.0 cm wide when the slit width is 4.70 10-5
0 answers
909 views
why are lightweight tires preferred over lightweight frams in bicycle racing?
0 answers
625 views
IM SO CONFUSED PLEASE HELP!
H2 +CO2-->H2O + CO When H2 is mixed with CO2 at 2,000K, equilibrium is achieved according to the
6 answers
1,548 views
Prove: (3cosx + 4sinx)^2 + (4cosx - 3sinx)^2=5 ...this is all under the square root sign.
I get 9cos^2x + 16sin^2x +16cos^2x +
0 answers
692 views
express this in sinx
(1/ cscx + cotx )+ (1/cscx- cotx) i got 2sinx is that right?? and B) express in cosx problem: is 1 +
1 answer
1,414 views
express in sinx
1 1 ---------- + -------- cscx + cotx cscx - cotx and express in cosx 1 + cot x ------- - sin^2x cscx = 1/sinx so
0 answers
787 views
Answers (2)
Using the Bohr model, estimate the wavelength ë of the Ká characteristic X-ray for a metal an atom of which contains Z = 50 protons.
Can you plug in the numbers for #1 please? I'm still a little confused.
