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A puck of mass m = 1.00 kg slides in a circle of radius r = 23.0 cm on a frictionless table while attached to a hanging cylinder of mass M = 3.80 kg by a cord through a hole in the table. What speed
Four balls, each of mass m, are connected by four identical relaxed springs with spring constant k. The balls are simulataneously given equal initial speeds v directed away from the center of symmet
Two long parallel wires whose centers are 21.0 cm apart are part of the same circuit. Each wire carries equal currents in opposite directions. Find the self-inductance of a 120.0 cm long section of
At the instant a battery is connected into a LR circuit, the emf in the inductor has its maximum value even though the current is zero. Explain.
Calculate the capacitance. The resistivity of the glass is rho = 1.2 x 10^13 ohms*m, and the dielectric constant is k = 5.6. Hint: Remember that I = dQ/dt.
using the approximate values of part (b), calculate the gradient of the potential along the x axis, and show that the negative gradient is equal to the x component Ex of the electric field
A block of mass m1 = m is pulled up a frictionless ramp at an angle of 40 degrees by a mass of m2 = 2m connected by a light string over a frictionless massless pulley. What is the acceleration of th
A 2.0 kg object has a velocity v = 4.0i m/s at t = 0. A constant resultant force F = (2.0i + 4.0j) N then acts on the object for 3.0 s. What is the magnitude of the object's velocity at the end of t
A ball of mass m = 0.20 kg strikes a wall with an initial speed of 5.0 m/s and rebounds in the opposite direction with a speed of 2.0 m/s. If the ball is in contact with the wall for 1.5 ms what is
The "wireless" connection used by your laptop computer employs electromagnetic waves with a frequency near 2.4 GHz. (a) What is the wavelength of this radiation?
There is friction as the pulley turns. The block starts from rest, and its speed after it has traveled downwards a distance of D= 0.65 m, is 1.519 m/s. Calculate the amount of energy dissipated up t
Assume that airresistance is so small that it can be ignored and that the zeropoint of gravitational potential energy is located at the positionat which the ball leaves the thrower's hand. a. Sketc
An irreguarly shaped object of mass 2.40 kg has a moment of inertia of 4.566 kgm^2 about an axis through the point 1.05 m from its center of mass. Calculate the moment of intertia about a parallel a
A 0.70 kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15 m. Determine: a) the velocity when it passes the equilibrium point
Two resistors are wired in series. The second resistor has twice the resistance as the first. Current passes through the combination. Compared to the current through the first resistor, the current
A 15 g bullet is fired into the bob of a ballistic pendulum of mass 1.8 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The length of the pendulum
(a) If the two cars collide and stick together their speed just after the collision is (b) What fraction of the initial kinetic energy of the cars is lost during this collision?
A 2.7-kg block is traveling to the right (the +x direction) at 5.1 m/s, and a second 2.7-kg block is traveling to the left at 1.8 m/s. (a) Find the total kinetic energy of the two blocks.
A 1600 kg car is moving westward with a speed of 20 m/s, and a 2800 kg truck is traveling east with a speed of 14 m/s. Find the velocity of the center of mass of the system. (Take east to be the pos
Assume that a 50-kg skater, on level ice, has built up her speed to 30 km/h. How far will she coast beforethe sliding friction dissipates her energy? (Kinetic energy =1/2 mv2) (b) How does the dista
IF the bug falls from a height of 200 m find the speed with which the bug hits the ground if there is no air resistance.
A 60.0 ohm resistor is connected in parallel with a 120.0 ohm resistor. This parallel group is connected in series with a 20.0 ohm resistor. The total combination is connected across a 15.0-V batter
Two positive charges = = 2.0 are located at = 0, = 0.30 and = 0, = -0.30 , respectively. Third point charge = 4.0 is located at = 0.40 , = 0.What is the net force ((a)magnitude and (b)direction) on
The LED will only light up if enough electrical current is flowing through it. The amount of current is given by I = V/R, where V is the potential difference. Why does it only light up when it is po
What is the total magnitude of the magnetic flux ( Phi_initial) through the coil before it is rotated?