
A proton accelerates from rest in a uniform electric field of 680 N/C. At some later time, its speed is 1.5 106 m/s.

A charge of 3.15 nC and a charge of 5.95 nC are separated by a distance of 30.0 cm. Find the position at which a third charge of +7.60 nC can be placed so that the net electrostatic force on it is z

A 5.5 kg bowling ball initially at rest is dropped from the top of a 12 m building. It hits the ground 1.75 s later. Find the net external force on the falling ball.

four capacitors are connected as shown in figure p16.31. Find the equivalent capacitance between points a and b

Assuming that water has a density of exactly 1 g/cm3, find the mass of one cubic meter of water in kilograms. (b) Suppose that it takes 10.0 h to drain a container of 5700 m3 of water. What is the ma

show that a deforming rod can exhibit simple harmonic motion

car drives straight off the edge of a cliff that is 59 m high. The police at the scene of the accident note that the point of impact is 133 m from the base of the cliff. How fast was the car traveling

what is the mass of gasoline (p=0.680g/cm3) in a 94.6l gasoline tank

An auditorium measures 30.0 m 25.0 m 9.0 m. The density of air is 1.20 kg/m3. (a) What is the volume of the room in cubic feet?

a perfectly spherical piece of metal is found at the bottom of a wishing well. This mass of the object is 1.7kg and the radius is 0.1m. what is its density? answer in units of kg/m3
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 The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
 (a) What is the average angular acceleration of the Earth?
 (b) If this average acceleration remains constant, in what year will the Earths rotation come to rest?
1. Can you show me step by step how to solve this problem?:
 A spherical balloon is made from a material whose mass is 3.00kg. The thickness of the material is negligible compared to the 1.5m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19kg/m^3. Find the absolute pressure of the helium gas
2. I do not understand this Ideal Gas Law and Kinetic Theory question. Can you help me set it up?