A(n) ______________ is a comparison of an unknown physical quantity with the standard unit
Fill in the blank(s) with correct word
measurement
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A cart is moving with a constant horizontal velocity of 5.00 m/s
A small pebble is launched from the front of the cart with a velocity of 8.00 m/s at 60.0° above the horizontal as measured relative to the cart (see figure) and experiences no significant air resistance. Just as the pebble returns to the level from which it was launched, its distance from the front of the cart is closest to A) 2.83 m. B) 4.60 m. C) 5.66 m. D) 9.19 m. E) 11.3 m.
Jeff throws a ball straight up. For which situation is the vertical velocity zero?
a. on the way up b. at the top c. on the way back down d. none of the above
Using a double-slit with a d = 300 nm and light of a wavelength of 400 nm, what would you see on a distant screen?
A. the intensity is maximum at the center and gradually decreases to either side B. the intensity is minimal at the center and gradually increases to either side C. the intensity is maximum in a single narrow line at the center D. the intensity is minimal in a single narrow line at the center
An object falls freely from rest on a planet where the acceleration due to gravity is 20 m/s2. After 5 seconds, the object will have a speed of
A) 5 m/s. B) 10 m/s. C) 20 m/s. D) 50 m/s. E) 100 m/s.