A box is placed on a table which rests on the floor. The box pushes on the table; the reaction force to the box's push on the table is the table's push on the floor
A) True
B) False
B
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A 2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kN. What is the frequency of the fundamental mode of vibration of this wire?
A) 204 Hz B) 102 Hz C) 408 Hz D) 510 Hz E) 153 Hz
A peregrine falcon dives at a pigeon. The falcon starts with zero downward velocity and falls with the acceleration of gravity. If the pigeon is 76.0 m below the initial height of the falcon, how long does it take the falcon to intercept the pigeon?
What is "uncertain" in the Heisenberg Uncertainty principle?
A. The energy of the particle when it has wave properties B. The exact number of protons in the nucleus C. The value of the particle's position when the particle's momentum is known precisely D. The value of the Planck's constant E. The time period of the wave describing the particle
A Nichrome wire has a radius of 0.50 mm and a resistivity of 1.5 × 10^-6 W×m. If the wire carries a current of 1.0 A, what is the potential difference per unit length along this wire?
a. 1.9 V/m c. 1.6 V/m b. 0.95 V/m d. 0.003 V/m