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A 10.0 g of Styrofoam carries a net charge of -0.700 uC and floats above the center of a large horizontal sheet of plastic that has a uniform charge density on its surface. What is the charge per u
A 0.139 kg mass is attached to a spring and executes simple harmonic motion with a period of 0.64 s. The total energy of the system is 4 J. Find the force constant of the spring.
A rifle is aimed horizontally at a target 47 m away. The bullet hits a target 2.00 cm below the aim point. What is the bullets flight time? What is the bullets speed as it left the barrel?
Determine the ray-transfer matrix for an optical system made of a thin convex lens of focal length f and a thin concave lens of focal length -f separated by a distance f. Discuss the imaging proper
A proton initially moves left to right long the x-axis at a speed of 2 E 3 m/s. What acceleration magnitude does the proton experience?
A convex mirror has a focal length of -11 cm. A lightbulb with a diameter of 6.0 cm is placed 60.0 cm in front of the mirror. Locate the image of the lightbulb.
A 55.0 g Super Ball traveling at 29.0 m/s bounces off a brick wall and rebounds at 16.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 4.50 ms, what is the
A 80 kg water skier floating in a lake is pulled from rest to a speed of 12 m/s in a distance of 25 m. What is the net force exerted on the skier, assuming his acceleration is constant?
There is a 0.275 T magnetic field directed along the +x axis and a field of unknown magnitude along the +y axis. A particle carrying a charge of 7.10 10-5 C experiences a maximum force of 0.455 N w
An osprey calls while diving at you, to drive you away from her nest. You hear the call at 2220 Hz. How fast is the osprey approaching?
At a certain location, the horizontal component of the earth's magnetic field is 2.2 10-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances its we
In a hydroelectric installation, a turbine delivers 1900 hp to a generator. Under these conditions, what current will the generator deliver at a terminal potential difference of 1030 V?
While rearranging a dorm room, a student does 304 J of work in moving a desk 3.1 m. What was the magnitude of the applied horizontal force?
A 17 g rifle bullet traveling 235 m/s buries itself in a 3.7 kg pendulum hanging on a 3.0 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal compon
What is the mass of the string, observed wave speed is 16m/s when the suspended mass is 3.0kg
The sun shines on a thin so that a 440 nm blue light is seen reflecting off the film. What is the minimum thickness of the film?
An 18 g rifle bullet traveling 210 m/s buries itself in a 3.6 kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal compo
A 65 kg woman and a 85 kg man stand 14.5 m apart on frictionless ice. If they hold on to the two ends of a rope, and the man pulls on the rope so that he moves 2.4 m, how far from the woman will he
Find a. the speedd of the disk's center of mass when it reaches the bottom of the ramp and b. the angular speed of the disk at the bottom of the ramp.
Particle 1 of charge 1 µC and particle 2 of charge -3 µC are held at separation L = 10cm on an x-axis. What must be the x and y coordinates of particle 3?
If the coefficient of kinetic friction is 0.20, how much work was done by the worker's force?
What is the mass of an ice cube, taken from a -19.0^circ C freezer, that will cool your coffee to a pleasant 59.0^circ?
He holds a flashlight between his feet and manages to point it at the mirror. At what angle of incidence must the light strike the mirror so the light will reach his eyes?
A constant torque of 21.4 N·m is applied to a grindstone whose moment of inertia is 0.125 kg·m2. Using energy principles, calculate the angular speed (in revolutions per second) after
In the determination of the volume of the irregularly shaped object, any air bubbles sticking to the surface of the object when it is submerged cause systematic error. Will this error give an exper