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A car travels at a constant speed around a circular track whose radius is 2.02 km. What is the magnitude of the centripetal acceleration of the car
A skier is gliding along at 5.0 on horizontal, frictionless snow. He suddenly starts down a 10incline. His speed at the bottom is 15. how long does it take him to reach the bottom
A highway curve with radius 1000{\rm ft} is to be banked so that a car traveling 48.0{\rm mph} will not skid sideways even in the absence of friction
A flat (unbanked) curve on a highway has a radius of 180{\rm m}. What is the minimum coefficient of friction that will prevent sliding
A house is 30.0 ft long and 32 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house
a gymnast is performing a floor routine. In a tumbling run she spins through the air, How much time does this maneuver take
A copper (Young's modulus 1.1 x 1011 N/m2) cylinder and a brass (Young's modulus 9.0 x 1010 N/m2) cylinder are stacked end to end, Find the amount by which the length of the stack decreases
In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 548 nm. What is the stopping voltage required
A soldier is tasked with measuring the muzzle velocity of a new rifle. Knowing the principles of projectile motion, What is the most accurate muzzle velocity that the soldier can report to his sergean
An object is placed 60 cm to the left of a converging lens having a focal length of 35cm. Calculate the magnification of the final image
The top of the pool table is 0.810 m from the floor. The placement of the tape is such that 0 m aligns to the edge of the table, At what speed did his pool ball hit the ground
a cylindrical can 8.00cm outside diameter and 20cm high floats upright in the water. how high will the water rise
19 g of helium gas are placed in a cylinder with a movable piston. The gas is compressed very slowly from a state of ( p1 = 5atm; v1 = 32 x 10^-3m^3) to a state of (p2 = 17atm; v2 = 9 x 10^-3m^3 )
One resistor dissipates 12 W of power when connected across a battery. how much total power will they dissipate
The magnetic flux through a coil of wire containing two loops changes from -41 Wb to +16 Wb on 0.35 s, What is the emf induced in the coil
The projectile remains in flight for 6 seconds and travels a horizontal distance D of 155m. Calculate the speed at which the rock was launched
A 2000-kg car travelling at an initial speed of 50 km/h skids to a stop with a constant acceleration. Determine the length of the skid marks
What is the total power of Sunlight that is absorbed by the disk? The disk reradiates this power back to outer space as infrared light
A fighter jet is attempting to land on an aircraft carrier with a runway length of 320m. How far will the jet have to travel before it stops
The 20-g centrifuge at NASA's Ames Research Center in Mountain View, Determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 19.8g
Given a spherical cell with outer radius R=6E-6 m, with thickness 5E-9 m. The potential difference across the membrane is -90 mV. Find potential energy stored within the membrane
You want to lift a heavy box with a mass of 98 kg using a two pulley system. If you lift the box by 1 m, how much work is done by gravity
Given a uniform ring of charge, with charge q=+30E-6 C and radius 0.2 m. Find the magnitude of linear charge density for the ring
2 protons, each with charge q=1.602E-19 C, are fixed in space. They form a spherical nucleus with diameter 1E-15 m. Find electric potential energy for the electron in orbit
X rays with a wavelength of 0.14 nm undergo first-order diffraction from a crystal at a 70^\circ angle of incidence. What is the angle of second-order diffraction