If you had something the size of a sugar cube that was made of white dwarf matter, it would weigh ________

A) as much as a truck B) as much as an average person
C) about 5 pounds D) as much as the entire Earth


A

Physics & Space Science

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Mass on a Spring: A 1.53-kg piece of iron is hung by a vertical ideal spring. When perturbed slightly, the system is moves up and down in simple harmonic oscillations with a frequency of 1.95 Hz and an amplitude of 7.50 cm. If we choose the total potential energy (elastic and gravitational) to be zero at the equilibrium position of the hanging iron, what is the total mechanical energy of the system?

A. 0.844 J B. 0.646 J C. 0.633 J D. 0.955 J E. 0.000 J

Physics & Space Science

An American football field, including end zones, is 360 feet long and 160 feet wide. What is its area in square meters?

A) 4,920 square meters B) 5,350 square meters C) 88.0 square meters D) 12,100 square meters E) 13,200 square meters

Physics & Space Science

Which one of the following is a correct statement for a number of resistors connected in series or parallel?

A) The total resistance in a series circuit decreases as more resistors are added. B) The flow of current is different through resistors connected in a series circuit. C) The voltage is different across resistors connected in a parallel circuit. D) The total resistance in a parallel circuit decreases as more resistors are added. E) None of the above statements is correct.

Physics & Space Science

A total impedance of an RC circuit with a capacitance of 40.0 ?F is 800 ?. If the frequency of the applied ac voltage is 18.0 Hz, what is the resistance of the circuit?

A) 569 ? B) 669 ? C) 769 ? D) 869 ? E) 800 ?

Physics & Space Science