A 4.0 kg object is moving with speed 2.0 m/s. A 1.0 kg object is moving with speed 4.0 m/s. The same stopping force is exerted on both objects and both objects are brought to rest. Which object travels the greater distance before stopping?
A) the 4.0 kg object
B) the 1.0 kg object
C) Both objects travel the same distance.
D) It cannot be determined from the information given.
C
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A deuteron is accelerated from rest through a 10-kV potential difference and then moves perpendicularly to a uniform magnetic field with B = 1.6 T. What is the radius of the resulting circular path? (deuteron: m = 3.3 × 10?27 kg, q = 1.6 × 10?19 C)
A. 19 mm B. 13 mm C. 20 mm D. 10 mm E. 9.0 mm
An electron, initially at rest, accelerates through a potential difference of 1 V, gaining kinetic energy KEe, while a proton, also initially at rest, accelerates through a potential difference of –1 V, gaining kinetic energy KEp, which of the following relationships holds?
1. KEe = KEp 2. KEe < KEp 3. KEe > KEp 4.The answer can’t be determined from the given information
Some Seyfert nuclei emit more energy than the energy emitted by the entire Milky Way Galaxy
Indicate whether the statement is true or false
What mass would have to be compressed to a radius of 1.0 × 10-15 m (the order of magnitude of the radius of an atomic nucleus) in order for it to become a black hole?
(G = 6.67 × 10-11 N ? m2/kg2, c = 3.0 × 108 m/s) A) 6.7 × 1011 kg B) 1.1 × 10-6 kg C) 8.3 × 1015 kg D) 2.2 × 103 kg E) 4.1 × 10-8 kg