
8. Suppose the light bulb in the figure below is replaced with a short wire of zero resistance, and the resistance of the rails is negligible. The only resistance is from the moving rod, which is iron

7. A magnetic field is perpendicular to the plane of a singleturn circular coil. The magnitude of the field is changing, so that an emf of 0.85 V and a current of 3.0 A are induced in the coil. The w

6. A rectangular loop of wire is moving toward the bottom of the page with a speed of 0.023 m/s (see the drawing). The loop is leaving a region in which a 2.0 T magnetic field exists; the magnetic fie

. Charge of uniform density (80 nC/m 3 ) is distributed throughout a hollow cylindrical region formed by two coaxial cylindrical surfaces of radii 1.0 mm and 3.0 mm. Determine the magnitude of the

A 230W heating coil designed to operate from 110 V is made of Nichrome wire 0.560 mm in diameter. (Assume = 1.50 106 m, and = 4.000 104( C) 1 for Nichrome.) (a) Assuming the resistivity o

In one cycle, a steady device transfers 1.55 106 J of energy from a reservoir at 450 K to a reservoir at 300 K. Find the change in entropy (after one complete cycle), (a) for the device, and (b) for

not sure how to do this question: Consider the points (x,Y)=(3,8) and (100,40). Calculate the unit vector u pointing from the first to the second. I was initially thinking of using the theorum sqrt(

A pendulum consists of an object of mass 4.42 kg that hangs at the end of a massless bar, a distance 1.68 m from the pivot point. Calculate the magnitude of the torque due to gravity about the pivot p

A man of mass 79.5 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 24.1 kg and is 2.4 m long. Suppose the man stands to the right from the middle of the sc

An athlete at the gym holds a 5.23 kg steel ball in his hand. His arm is 71.6 cm long and has a mass of 6.74 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out
Ask a new Physics Question
Tips for Asking Questions
 Provide any and all relevant background materials. Attach any necessary files to ensure your Tutor has all the required information to answer your question as completely as possible.
 Set a compelling price. While our Tutors are eager to answer your questions, offering a compelling price speeds up the process by avoiding any unnecessary price negotiations.
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?