Light of wavelength 610 nm is incident on a slit 0.20 mm wide and the diffraction pattern is viewed on a screen that is 1.5 m from the slit. What is the width on the screen of the central maximum?
A) 0.34 cm
B) 0.68 cm
C) 0.92 cm
D) 1.2 cm
E) 1.5 cm
C
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Planetesimals beyond the orbit of _____ failed to accumulate into a protoplanet because the gravitational field of _____ continuously disturbed their motion
a. Neptune; Uranus b. Jupiter; Mars c. Earth; Saturn d. Mars; Earth e. Mars; Jupiter
A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz. What are the (a) maximum speed and (b) maximum acceleration of the tip of the needle?
What will be an ideal response?
An electric current can consist of
a. positive ions flowing in a liquid c. electrons flowing in a wire b. negative ions flowing in a liquid d. all of the above
Pressure in a Liquid: A container has a vertical tube, whose inner radius is 24.00 mm, connected to it at its side, as shown in the figure. An unknown liquid reaches level A in the container and level B in the tube-level A being 5.0 cm higher than level B. The liquid supports a 20-cm high column of oil, between levels B and C, whose density is 570 kg/m3. The mass of the oil is closest to
A. 210. B. 410. C. 620. D. 820. E. 1000.