
A 2.0mlong, 500g rope pulls a 10kg block of ice across a horizontal, frictionless surface. The block accelerates at 2.0m/s^2. How much force pulls on the block of ice and how much force pulls on the

(a) The elevator is stationary. N (b) The elevator is accelerating upward with an acceleration whose magnitude is 1.40 m/s2. N (c) The elevator is accelerating downward with an accelerat

Cell phone conversations are transmitted by highfrequency radio waves. Suppose the signal has wavelength 35.7cm while traveling through air. What is the frequency as the signal travels through 3mm t

Two loudspeakers emit sound waves of the same frequency along the xaxis. The amplitude of each wave is a. The sound intensity is minimum when speaker 2 is 10cm behind speaker 1. The intensity increa

A 22cmlong, 1.0mmdiameter copper wire is joined smoothly to a 60cmlong, 1.0mmdiameter aluminum wire. The resulting wire is stretched with 20 N of tension between fixed supports 82 cm apart. Th

What is the drag force on a 1.6meter wide, 1.4 meterhigh car traveling at 10m/s?

The word document enclosed has the question with a picture.

A fisherman and his rowboat have a combined mass of 125 kg. Standing in the motionless boat in calm water, he tosses out a 5 kg rock from the back of the boat, with a velocity of 5 m/s. What will be

A 20,000 kg railroad car is traveling at 3 m/s when it collides and couples with a second, identical car at rest. What is the resulting speed of the combined cars?

You have N (an even number less than 2) identical capacitors, each with a capacitance of . In terms of N and C, what is their total effective capacitance if they are all connected in series?
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Sample Questions
 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?