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The diagram of a speaker has a mass of 50.0g and responds to a signal of 2.0 khz by moving back and forth a with an amplitude of 1.8 X10^-4 m at that frequency. what is the force acting on the speak
A coil with a radius of 2cm is wrapped with 400 turns of wire uniformly along its 20cm length. what EMF will be produced in the coil
a 100 Watt electric light bulb is plugged into 120 Volt, 60 HZ AC voltage source. What is the peak current in the bulb
Two parallel metal plates separated by a distance of 2mm and each having an area of .5m squared carry equal, What potential difference exist between the plates
If a spaceship orbits an asteroid with a radius of 800m, find the asteroid's moment of inertia in orbit
A sample of the radioactive nuclide is prepared that has an initial activity of 7.28×1011 .92.4 after the sample is prepared, What is the half-life of this nuclide
A 1,500 kg jeep is parked on a 30 degree slope, facing uphill. Find the normal force exerted by the road on the front wheels and on the rear wheels
Air that initially occupies 0.47 m3 at a gauge pressure of 100 kPa is expanded isothermally to a pressure of 101.3 kPa, Compute the work done by the air
A wooden raft has a mass of 69 kg. When empty it floats in water (density 1000 kg/m3) with 25% of its volume submerged. What mass of sand can be put on the raft
A ball rolls horizontally off a 45-m high cliff with vo=10 m/s. How far from the base of the cliff will it hit the ground, What is the angular acceleration of the tires
A plastic plano-concave lens has a radius of curvature of 50 cm for its concave surface. what is the power of the lens
A particle with a mass of 6.64*10^-27kg and a charge of 3.20*10^-19Cis accelerated from rest through a potential difference of 2.45*10^6V. calculate the radius of the path inside the magnetic field
A 2.5-mC charge is on the y-axis at y=3.0 m and a 6.3-mC charge is on the x-axis at x=3.0 m. What is the direction of the electric potential at the origin
When a particle is at the origin, it has a velocity given by vo = (12i + 15j)ms-1. How long does it take the particle to hit the y-axis
An inductor has an inductance of 0.069 H. The voltage across this inductor is 56 V, What is the current in the inductor
To maximize the moment of inertia of a flywheel while minimizing its weight, what shape and distribution of mass should it have
Determine the ionization energy of hydrogen if the shortest wavelength in the Balmer series is found to be 3650 AO
Fuel systems of modern cars are designed so thermal expansion of gasoline doesn't result in wasteful and polluting fuel spills. How large an expansion tank do you specify
on a windy day, a person on a cart (combined mass m of 70kg) begins at the top of a hill 10m hihg traveling at 3m/s, At what distance from the bottom of the hill did the car stop
Superman is jogging alongside the railroad tracks on the outskirts of Metropolis at 150 km/h. What is superman's final speed
A uniform disk of mass M=12.0 kg and radius R=.75 m is free to rotate about a frictionless axle through its center. compute the roational kinetic energy
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
What is the mass of nitrogen in an nitrogen tank at 20C if the tank has a volume of 0,20m^3 and nitrogen pressure in the tank is 4,0 x 10^6 N/m^2
A woman accelerates her motorized scooter, with the engine on, down a 13-m-long ramp that starts at a height of 2.2 m. how many joules of energy did friction absorb
The fundamental frequency of a closed organ pipe is 264.9 Hz. What is the length of the open pipe