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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. Sketch a
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 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. Find the velocity of the center of mass of the two block system.
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
Calculate the terminal velocity of a 1.0 cm bug. Assume that the density of the bug is 1.0 g/cm^3.and the bug is spherical in shape with a diameter of 1.0 cm.
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
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
In a physics laboratory experiment, a coil with 180 turns enclosing an area of 13.5 cm^2 is rotated during the time interval 5.00×10-2 s from a position in which its plane is perpendicular to E
A 60.0-O resistor is connected in parallel with a 120.0-O resistor. This parallel group is connected in series with a 20.0-O resistor. The total combination is connected across a 15.0-V battery. Fin
Find (a) the angle between the direction of motion of the second ball and the original direction of motion of the cue ball and (b) the original speed of the cue ball.
The pulley, which is a disk of radius 9.50 cm, has friction in its axle. What is the magnitude of the frictional torque that must be exerted by the axle if the system is to be in static equilibrium?
A tropical fish aquarium with 5 ocean species of fish has flat glass sides. A beam of light from outside the aquarium strikes the glass at a 47.0º angle to the perpendicular. What is the angle
The mass of a pendulum bob is .375 Kg. The length of a pendulum is 800 mm. If the bob is released at 20.0º to the vertical: what is the total energy stored in the oscillation, assuming no losses?
Using Faraday's Law of Induction, calculate the magnitude of the potential difference induced in the moving rod.
Derive an expression for the terminal velocity of the bar if it is allowed to fall free along this frame starting from rest. Neglect friction between the wired and metal bar.
A 0.71-um-diameter droplet of oil, having a charge of, is suspended in midair between two horizontal plates of a parallel-plate capacitor. The upward electric force on the droplet is exactly balance
The bullet imbeds itself into the block, and they start to slide at 3.9 m/s. The coefficient of kinetic friction between the block and floor is .25. a.) How far does the block/bullet slide before it
A small ball of mass m is attached to a very light string of length L that is tied to a peg at point P. What is the magnitude of the horizontal velocity that must be applied to the ball so that it s
Find the tangential and centripetal acceleration at the top of the loop using the velocity from part A.