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A sample of an unknown material weighs 300 N in air and 200 N when immersed in alcohol. The density of the alcohol is 70% the density of water. determine the volume of the unknown material
Determine the maximum and minimum of the absolute value of the magnetic flux through a large triangular wire loop that has three equal sides of 1.85 m
An 39-turn circular coil of radius 22.1 cm carries a current of 3.37 A. What is the strength of the magnetic field
Two protons, moving in a plane perpendicular to a uniform 510 G magnetic field, How much time elapses before they collide again
the electromagnetic wave that delivers a cellular phone call to a car has a electric field with an rms value of 4.5e10^-2. find the intensity of the wave generated by this phone call
carries a 10 A current with a uniform current density. Use Ampere's Law to determine the magnetic field strength at the axis of the wire
is tightly wound into a long solenoid , and a 3.6 A current is passed through it. What is the magnetic field of the solenoid
You have a spring attached to the bottom of a container. The spring is aligned vertically. The container is filled with water (density 1.0 x 103 kg/m3). How much does the block compress the spring
Two thin convex lenses, A and B, lens A has a long focal length and lens B has a short focal length. which lens will produce an image at a smaller s'
Reflecting telescopes make use of a concave mirror, in place of the objective lens, to bring the distant object into focus. What is the magnifying power of a telescope
Calculate the number of electrons in a steel iron pinhead. The pinhead may be assumed to be spherical with a diameter 2mm
A uniform charged disk of radius 30.0cm carries charge with a density of 8.00x10^-4 C/m^2. Calculate the electric field on the axis of the disk at
A ballistic pendulum apparatus has a hinged catcher of mass 250.0 g. What is the muzzle velocity of the gun
An arteriole has a length of 1.03 mm and a radius of 24.7 %u03BCm. Calculate the resistance of the arteriole
you have a 100.00 cm track inclined at 10.000 degrees. You roll a steel ball down the track until it drops off the track and falls 1.0000 m to the floor
An object with a height of 2.49cm is placed 35.5mm to the left of a lens with a focal length of 34.2mm. What is the height of the image
Two spaceships approach Mars from the same direction. One has a speed of 0.2c, What is the speed of one spaceship relative to the other
A hanging block A ( Ma = 15 kg) is connected by a light cable and a pulley wheel to a second block B ( Mb = 10 kg) situated at the bottom of a frictionless inclined plane with angle %u03B8 = 30o to
A 0.20-kg particle moves along the x axis under the influence of a stationary object. The potential energy in SI unit is given by U(x) = 80.0x + 20.0x^2, find the turning points of the motion
Four closed surfaces, S1 through S4, together with the charges %u22122Q, Q, Find the electric flux through each surface
Bill measures the rate at which the clock in Sam's spaceship runs and finds that it is one-third the rate at which the same clock runs when it is at rest
Particle A of mass M and speed v moving to the right, strikes particle B of mass 3M that is moving to the left at speed v5.0. find the velocity of the center of mass of the two particles before the co
A 4.00-kg particle moves along the x axis. Its position varies with time according to x = 3.0t + 2.0t^2 where x is in meters and t is in seconds. Find the acceleration of the particle
An X-ray photon with a wavelength of 0.260nmscatters from a free electron at rest. Find the final momentum of the photon
A baseball (m = 149 g) approaches a bat horizontally at a speed of 42.8 m/s (96 mi/h) and is hit straight back at a speed of 48.4 m/s (108 mi/h). what is the average force exerted on the ball by the