Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Suppose that you wish to fabricate a uniform wire out of 1.15 g of copper. Assume the wire has a resistance R = 0.500 , and all of the copper is used. (a) What will be the length of the wire? (b) Wh
What is the magnitude of the centripetal acceleration that the blade must sustain at this point?Express this acceleration as a multiple of g=9.80m/s2.
What is the magnitude of the centripetal acceleration that the blade must sustain at this point? Express this acceleration as a multiple of g=9.80m/s2.
In the Bohr model of the hydrogen atom, an electron in the 8th excited state moves at a speed of 3.42 x 104 m/s in a circular path having a radius of 3.39 10-9 m. What is the effective current associa
Assume that the layer of the atmosphere between 800 Hpa and 700 Hpa absorbs 1.0*10^6 J/M^2 of solar radiation. Calculate the resulting increase in the mean temperature and in the thickness of the la
A weightlifter lifts a weight of mass 40.0 kg through a distance of 0.590 m, then lowers it gently. He does this 25 times. Calculate the net work done by the force of friction due to the rope rubbin
A thin ring, which has a radius of 0.040 m and a mass of 1.8 kg, is dropped straight down onto the disk so that they are concentric and rotating together. (Note: The ring is not rotating before the
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 31 m/s, the block hangs vertically down.
A 0.15 kg mass is on the end of a thing rod that is rotating about its center with an angular frequency of 17 rad/s. The rod is 0.45 m long and has a mass of 0.06 kg. What is the rotational kinetic
A box weighing 480 N is pushed along a horizontal floor at constant velocity by a force of 230 N parallel to the floor. What is the coefficient of kinetic friction between the box and the floor?
A parallel plate capacitor is held at fixed potential while a dielectric with k=10 is inserted into the vaccuum between the plates,filling spaces. A) What is now the total electric energy stored by
Two blocks are stacked one on top of the other. the coefficient of friction between the two blocks is 0.20, adn the coefficient of friction between the bottom block adn the floor is 0.10. what is th
Determine the current in the loop in milli-amps (the resistivity for copper is 1.72 x 10-8 Ohm/meter). Please be as detailed as possible.
While traveling through space, Luke Skywalker's starfighter hits a stationary piece of space debris that has a mass of 2kg. The force the starfighter exerts on the debris is 399N that lasts for .7 s
Consider three charges q1 = 5.10 nC, q2 = 7.10 nC, and q3 = -2.60 nC, arranged in a triangle as shown below. The volume of q1 is 7.50 10-30 m3, the volume of q2 is 2.30 10-30 m3, and the volume of
The mass of the blue puck is 10.0% greater than the mass of the green one. Before colliding, the pucks approach each other with momenta of equal magnitudes and opposite directions, and the green puc
(a) Find the current in the coil if the maximum torque exerted on it by the magnetic field is 0.18 N · m.
what is the distance to 70 Ophiuchi in parsecs? what is the actual length of the semimajor axis in AU? What is the sum of the massses of the two stars? Give your answer in solar masses.
A .22µF capacitor is charged by a 1.5 volt battery. After being charged, the capacitor is connected to a small electric motor that is 100% efficient. What initial voltage must the capacitor ha
Three identical point charges Q are placed at the vertices of an equilateral triangle. The length of each side of the triangle is d. What is the mag and dir of the total electrostatic force on the
A ball slides down an icy hill 100 meters high and slides up another icy hill 50 meters high, doing nothing in the middle (no speed is lost) how fast is it moving at the top of the 50 meter hill?
A 60 kg person is parachuting and experiencing a downward acceleration of 2.4 m/s2. The mass of the parachute is 5.8 kg. (a) What is the upward force on the open parachute from the air? (b) What is
A 0.26 kg particle moves along an x axis according to x(t) = - 14 + 3 t + 5 t2 - 5 t3, with x in meters and t in seconds. What are projections of the net force acting on the particle at t = 3.5 s on
A rectangle has a length of 2d, and a height of d. Each of the following three charges is located at a corner of the rectangle; +q1 at the upper left, +q2 at the lower right, and -Q at the lower lef
Vector is 3.0 units in length and points along the positive x-axis; vector is 4.0 units in length and points along a direction 150o from the positive x-axis. What is the magnitude of the resultant w