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Two unknown charges lie on the x axis separated by some distance. The force on one of these charges, say q1, is 34.4 Newtons directed in the negative x direction. If the amount of this charge is doubled and it changes sign (now -2 q1), but the location of both charges does not change, what is the electric force on q1 now in Newtons? Indicate the negative x direction by including a negative sign in the answer, but omit a sign for the positive x direction.
An object with a mass of 72.0 g displaces 590.0 ml of water when it is completely immersed. What is the buoyant force on the mass?
A small metal bead, labelled A, has a charge of 29 nC. It is touched to metal bead B, initially neutral, so that the two beads share the 29 nC charge, but not of necessity evenly. When the two beads are then placed 5.0 {rm cm} apart, the force betwee..
To move a large crate of mass 30.05 kg across a rough floor, you push on it with a force at an angle of = 22.8° below the horizontal. Compute the acceleration of the crate if the applied force is 382 N and coefficient of kinetic friction is 0.486.
A 02385 mH inductor has a length that is four times its diameter. If it is wound iwth 10.3 cm^-1 truns per centimeter, what is the length? Answer in units of m.
What is the magnitude of the current in the wire as a function of time?
A ranger in a national park is driving at 24.0 mi/h when a deer jumps into the road 270 ft ahead of the vehicle. After a reaction time of t, ranger applies the brakes to produce an acceleration of a = -9.00 ft/s2. What is the greatest reaction tim..
Calculation of the ground state of one-dimensional harmonic oscillator using variational Monte Carlo method and How do you know the minimization is good enough?
What is the stopping distance of the car. What is the initial (horizontal) velocity of the ball.
A ball dropped from a height of 4.00 m makes an elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance, a) show that the ensuing motion is periodic, b) find the period of the motion.
Light is diffracted when it passes through a narrow single slit. What happens to the width of the central maximum in the diffraction pattern when the width of the slit trough which light passes is reduced.
A diffraction grating with 330 {rm lines/mm} is 1.00 {rm m} in front of a screen. What is the wavelength of light whose first-order maxima will be 17.0 {rm cm} from the central maximum on the screen.
what are the magnitude and direction of its acceleration. A potential difference of 80 mV exists between the inner and outer surfaces of the cell membrane. The inner surface is negative relative to the outer surface. How much work is required to ej..
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