
A car travels on a circular track of radius R = 209 m, with increasing speed v = R t. [t = time; = 0.12083 radians per second2.] (A) What is the angular position at t = 30 s (relative to t = 0)

1)A car travels on a straight road. The speed is 60 mph. The direction is northwest. Calculate the eastward component of the displacement vector after 30 minutes of travel time. 2)A cannon shoots a b

A raindrop falls from the roof of a house. It passes two windows along the way: one of height d starting the distance d below the roof and the other of height D starting the distance 3d below the roof

A person scuffing her feet on a wool rug on a dry day accumulates a net charge of 68.1uC. How many excess electrons does this person get?

A star of mass 16 10^30 kg is located at 6 10^12, 3 10^12, 0 m. A planet of mass 4 10^24 kg is located at 4 10^12, 8 10^12, 0 m and is moving with a velocity of 0.6 10^4, 1.2 10^4

The coefficient of thermal expansion of a substance (alpha) measures the change in the volume of a substance as temperature is increased under conditions of constant pressure. It is defined by the re

Consider 1.00 mol of argon (Ar), an ideal monatomic gas (CV,m = 12.47 J/mol.K) at an initial temperature and pressure T = 300.0 K and p = 5.00 atm. Find q, w, U, and H for each of the following pro

A skier weighing 90 kg starts from rest down a hill inclined at 17. He skis 100 m down the hill and then coasts for 70 m along level snow until he stops. Find the coei ficient of kinetic friction

A block of mass m = 1.3 kg slides down a frictionless track, as shown in Figure 2A (page 94). The block is released at height h = 3.7 m. The radius of curvature of the track at the bottom is R = 1 m.

Why did (i) the increase in the distance a photon could travel before being deflected by a free electron and (ii) recombination of protons and electrons to form neutral hydrogen about 40
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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?