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A charge of -11.1 micro-Coulombs is placed at the origin of a coordinate system. Another charge of -12.1 micro-Coulombs is placed at x = +0.27 m, y = +0.14 m. A third charge of +14.8 micro-Coulombs
What is the index of refraction of a material in which the red-light wavelength is 450 nm?
A) 100J of heat energy are transferred to 20g of mercury. By how much does the temperature increase? B) How much heat is needed to raise the temperature of 20g of water by the same amount?
Five grams of nitrogen gas at an initial pressure of 3.0 atm and at 20 degrees C undergo an isobaric expansion until the volume has tripled. A) What is the gas volume after the expansion in cm^3?
The electric potential at the center of a square is -3 V when a charge of -Q is located at one of the square's corners. What is the electric potential at the square's center when identical charges o
Points A and B have electric potentials of 255 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KEA. When the electron is released f
Another charge is placed halfway between the two other charges (directly below the other corner of the triangle - see sketch). What does this charge need to be such that the total electric field in
If it is pushed by a rocket motor (thrust force of a rocket motor is 5.0*10^6 N)and is subject to no other forces, what will be the magnitude of its acceleration?
A train started from rest and moved with constant acceleration. At one time it was traveling 35 m/s, and 160 m farther on it was traveling 46 m/s.
A charged particle A exerts a force of 2.65 µN to the right on charged particle B when the particles are 13.2 mm apart. Particle B moves straight away from A to make the distance between them
What is the direction of the electric field along the positive z semi-axis (vertical) if the field is created by: a) a uniformly charged circle in the x-y plane with the center at the origin
Electrostatic equilibrium: Find positions of four charges in a plane (+1 C, -1 C, +2 C, -2 C) that result in a stable equilibrium (zero net force on each charge, even if the charges move a bit). Rep
A grandfather clock is controlled by a swinging brass pendulum that is 0.90 m long at a temperature of 30.°C. (a) What is the change in the length of the pendulum rod when the temperature drops to
Suppose the acceleration of a particle is a function of x, where ax(x)=(2.4s^-2)x. a(a) If the velocity is zero when x = 1.0m, what is the speed when x = 3.5m?
A particle with a mass of 2.5×10-5 kg and a charge of +3.0 uC is released in a (parallel plate) uniform horizontal electric field of 13 N/C. 1. How far horizontally does the particle travel in 0
A hockey puck has an initial velocity of 42 m/s and a final velocity of 26 m/s. a. If it travels 25 m during this time, what is the acceleration b. if the mass of the puck is .16 kg, what is the horiz
The pressure in a constant-volume gas thermometer is 0.700 atm at 100°C and 0.512 atm at 0°C. (a) What is the temperature when the pressure is 0.0540 atm?
Each square meter of the surface of a sheet of paper has 2.58×10^6 excess electrons. Find the magnitude of the electric field at a point which is a distance of 5.15m from the surface of the sh
An experimental measurement has a result 4.95±.01, and a predict value of 5.00. What is the percentage deviation between the two?
A certain heat pump has a COP of 5.1 while operating in both heating and cooling mode. Suppose the heat pump operates in heating mode on a cold day.
Neptune is approximately a sphere of radius 2.21 x 107 m. (a) What is its circumference in kilometers?
1. Calculate the work done by a 47N force pushing a .025kg pencil .25m against a force of 23N.
A lead bullet initially at 33°C just melts upon striking a target. Assuming that all of the initial kinetic energy of the bullet goes into the internal energy of the bullet to raise its temperat
If 400 kcal is added to a gas that expands and does 1000 kJ of work, what is the change in the internal energy of the gas?
A calorimeter of negligible mass contains 1100 g of water at 303 K and 41 g of ice at 273 K. Find the final temperature T.