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A 1460-kg racecar is driving around a circular track of radius 161 m. What is the magnitude of the net force acting on the vehicle
A parallel-plate capacitor is made from two aluminum-foil sheets, each 3.00 cm wide and 10.0 m long. What is the maximum charge that can be stored in this capacitor
Water flowing in a horizontal pipe is at a pressure of 1.55 105 Pa at a point where its cross-sectional area is 6.00 m2. Find the water's speed in the wider pipe
An airplane takes off at sea level and climbs to a height of 480 m. Estimate the net outward force on a passenger's eardrum assuming the density of air is approximately constant
A rescue helicopter lifts a 60 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2, How much work is done by the tension in the cable
An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrower section
A 0.621-kg basketball is dropped out of a window that is 5.26 m above the ground. How much work is done on the ball by its weight
Starting from rest, a 2.3x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, What is the flea's speed when it leaves the ground
A researcher would like to perform an experiment in a zero magnetic field, which means that the field of the earth must be cancelled. What current is needed in the solenoid's wires
Two rays travelling parallel to the principal axis strike a large plano-convex lens having a refractive index of 1.60. find the difference in positions where they cross the principal axis
Inside a motor, 30.0 A passes through a 250-turn circular loop that is 10.0 cm in radius. What is the magnetic field strength created at its center
The pulley system in Figure below is used to lift a 52-kg crate. Note that a chain connects the upper pulley to the ceiling, determine the tension in each chain
A cart for hauling ore out of a gold mine has a mass of 445 kg, including its load. Find the work that the force of gravity performs on the cart
A charge of -3.0 nC is at the origin and a second charge of 15.0 nC is at x = 7.00 m. Find the magnitude and direction of the electric field
An infinite line of positive charge lies along the y axis, with charge density 1.90 microcoulombs/m. Calculate the torque about the midpoint of the dipole
A projectile is fired with an initial speed of 113 m/s at an angle of 60 degrees above the horizontal, from the top of a cliff which is 49.0 meters high. determine time to reach maximum height
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 4.60 cm into the river
For safety in climbing, a mountaineer uses a nylon rope that is 60 m long and 1.0 cm in diameter. Find its Young's modulus
Starting from rest, object 1 is subject to a 10Nforce for 2.0 s. Object 2, with twice the mass, is subject to a 15N force for 3.0 s
A nearsighted sheriff fires at a cattle rustler with his trusty six-shooter. Fortunately for the rustler, the bullet misses him and penetrates the town water tank, causing a leak. how far above the
he electric field in a particular region of space is found to be uniform, What is the change in electric potential energy of a charge q = 6.7 uC if it is moved from (x, y) = (20 cm, 45 cm) to (5 cm,
Two identical particles, each with a mass of 4.5 mg and a charge of 30 nC, are moving directly toward each other with equal speeds of 4.0 at an instant, How far apart will they be when closest to on
A transverse wave on a string is described by the wave functionA transverse wave on a string is described by the wave function y=(0.120m)sin((pi*x)/8 +4*pi*t).a), Determine the transverse speed and
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. How deep is the well
Calculate the absoute pressure at the bottom of a fresh-water lake at a depth of 28.9 m. Assume the density of the water is 1.00x10^3 kg/m^3 and the air above is at a pressure of 101.3 kPa