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Q. (a) Find the mass of hypothetical spherical asteroid 2 km in diameter and composed of rock with average density 2500 kg/m (cubed). (b) Find the speed required to escape from the surface of this asteroid. (c) A typical jogging speed is 3 m/s. What would you happen to an astronaut who decided to go for a jog on this asteroid?
Q. An uncharged capacitor is connected to the terminals of a 4.0 battery, and 12 flows to the positive plate. The 4.0 battery is then disconnected and replaced with a 7.0 battery, with the positive and negative terminals connected in the same manner as before. How much additional charge flows to the positive plate?
A loudspeaker of mass 19.00 is suspended the distance of = 1.80 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.50. What is the tension in each of the cables.
An electron is projected with an initial speed 1.00×106 into the uniform field between the parallel plates. Suppose that field between the plates is uniform and fixed vertically downward, and that field outside the plates is zero. The electron enters..
Giancoli, page 30 --when they say that x-xo increases with the square of the initial speed. Why do they say square of initial speed only, what about square of final speed? And why do they ignore that the distance also decreases by a factor of 2.
If you connect these 3 resistors in series across a variable emf source of negligible internal resistance, what is the largest potential difference this emf source can be set to without damaging any of resistors.
Two water reservoirs are open to the atmosphere. The manometer contains mercury with the density of 13,600kg/m cubed. What is the difference in elevation if the manometer reading is 25cm.
A vertical scale on a spring balance reads from 0 to 175. The scale has a length of 12 from the 0 to 175 reading. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.8.
A cement block accidentally falls from rest from the ledge of a 74.8-m-high building. When the block is 18.4 m above the ground, a man, 2.10 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have ..
If you drop an aspirin and it takes 0.18 sec to hit the table, how high above the table was the aspirin when it released?
A 79.0 kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, the vertical height of 4.40m.What is the work completed on the man by the gravitational force and the escalator.
Mrs. Smith has returned to work and feels well. She does not know why she needs to have periodic blood tests due to the warfarin. What is your explanation to Mrs. Smith.
What is final total energy of the system
A projectile is fired horizontally from a gun that is 47.0 m above flat ground; emerging from the gun with a speed of 250 m/s.
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