Four identical masses of mass 500 each are placed at the corners of a square whose side lengths are 13.0cm. What is the magnitude of the net gravitational force on one of the masses, due to the other three?
Rosie (mass 49 kg) pushes a box with a horizontal force of 130 N (29.224 lb) at a speed of 13 m/min. What is Rosie's power output? Answer in units of W.
A gas is 36 degrees C. To what temperature must it be raised to triple the rms speed of its molecules?
that is the whole question
A wheel rotating with a constant angular acceleration turns through 10 revolutions during a 2 s time interval. Its angular velocity at the end of this interval is 16 rad/s. What is the angular acceleration of the wheel? Note that the initial angular velocity is not zero. Answer in units of...
How strong is the electric field between the plates of a 0.60 microfarad air-gap capacitor if they are 1.0 mm apart and each has a charge of 68 microcoulomb?
why we study electrodynamics, its uses in our life and describe its benefits?
1. A rolling wheel of radius r has translational velocity v as well as angular velocity w. Here you will relate translational velocity to angular velocity. Since the circumference of a circle of radius r is 2p r, every time the center of mass moves a distance 2p r, the object rotates a full...
High-voltage power lines are a familiar sight throughout the country. The aluminum wire used for some of these lines has a cross-sectional area of 4.60 10-4 m2. What is the resistance of ten kilometers of this wire?
What physical quantities are conserved in this collision? the magnitude of the momentum only the net momentum (considered as a vector) only the momentum of each object considered individually
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1. Can you show me step by step how to solve this problem?:
- 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?
2. I do not understand this Ideal Gas Law and Kinetic Theory question. Can you help me set it up?
- A spherical balloon is made from a material whose mass is 3.00-kg. The thickness of the material is negligible compared to the 1.5-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305-degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19-kg/m^3. Find the absolute pressure of the helium gas