Gravity causes the pressure in the ocean to vary with depth
Indicate whether the statement is true or false
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A water hose has a flow rate of 3.0 kg/s of water. If the velocity of the water as it leaves the hose is 5.0 m/s, then the force to hold the hose is
A. 15 N. B. 26 N. C. 30 N. D. 45 N. E. 57 N.
A nonrelativistic electron is accelerated from rest through a potential difference
After acceleration the electron has a de Broglie wavelength of 880 nm. What is the potential difference though which this electron was accelerated? (h = 6.626 × 10-34 J ? s, e = - 1.60 × 10-19 C, mel = 9.11 × 10-31 kg) A) 2.5 µV B) 2.2 µV C) 1.9 µV D) 1.7 µV
The large space telescope that has been placed into an Earth orbit has an aperture diameter of 2.40 meters. What angular resolution will this telescope achieve for visible light of wavelength l = 4.80 × 10^-7 m?
a. 2.44 × 10^-7 rads b. 2.44 × 10^-4 rads c. 2.44 × 10^-3 rads d. 1.22 × 10^-6 rads e. 2.00 × 10^-6 rads
How fast do electromagnetic waves travel?
a. At the speed of sound. b. At the speed of light. c. At one-half the speed of light. d. Six feet per day. e. At varying speeds depending on the electric and magnetic oscillations.