Electromagnetic radiation, or light, travels at speed ___________ m/s
Fill in the blank(s) with correct word
3 × 10^8
or
300,000,000
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How many different kinds of leptons are known to exist, including antiparticles as different kinds?
A) 12 B) 4 C) 2 D) 8 E) 6
A 320-g air track cart is traveling at 1.25 m/s and a 270-g cart traveling in the opposite direction at 1.33 m/s. What is the speed of the center of mass of the two carts?
A) 2.80 m/s B) 0.0693 m/s C) 0.131 m/s D) 1.47 m/s E) 1.29 m/s
The maximum displacement of a mass attached to a spring is 0.122 m, while its highest acceleration is 0.953 m/s2. What is its maximum speed?
A) 0.358 m/s B) 0.108 m/s C) 0.831 m/s D) 0.341 m/s E) 0.538 m/s
A vibrating tuning fork causes an identical fork nearby to vibrate. This is called
1) refraction. 2) resonance. 3) beats. 4) reverberation. For this to occur, both forks must have the same (or multiple) 5) intensities. 6) amplitudes. 7) frequencies. 8) geometries. 9) all of these.