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A fisherman casts his bait toward the river at an angle of 25 degrees above the horizontal. What was the initial velocity he launched the bait
A thin uniform rod (mass = 1.75 kg) swings about an axis that passes through one end of the rod, What is the maximum kinetic energy of the rod
An object with a mass of 0.427kg is attached to a long horizontal spring with a constant of 42.6kg/s2. How long does it take the the particle to move from -0.500m to 0.500m
A 390 nm thick film floats on a puddle of water. When illuminated normally with 700 nm light there is no reflection, but 400 nm light is strongly reflected. What is the film's index of refraction
Suppose 1.0 mol of a monatomic ideal gas initially at 10 L and 337 K is heated at constant volume to 674 K, What is the net work done by the gas during the cycle
Spaceships of the future may be powered by ion-propulsion engines in which ions are ejected from the back of the ship to drive it forward. What is the velocity of the ions relative to the earth
A 0.25L container is initially filled with air at STP. A piston compresses it adiabatically to a volume of 12.0% of the original volume. Calculate the final temperature and pressure
A Carnot engine operates between 230 °C and 120 °C, absorbing 6.30 multiplied by 104 J per cycle at the higher temperature. How much work per cycle is this engine capable of performing
Suppose 1.0 mol of a monatomic ideal gas initially at 10 L and 350 K is heated at constant volume to 700 K, What is the efficiency of the cycle
A spacecraft approaching the earth launches an exploration vehicle. After the launch, What is the speed of the exploration vehicle
A rope is wrapped around a wheel of radius R=2.0 meters. The wheel is mounted with frictionless bearings on an axle through its center. What is the moment of inertia of the wheel
Coherent light of wavelength 540.4 nm is sent through two parallel slits in an opaque material. Each slit is 0.700 µm wide. How many bright fringes are visible on the screen
John takes off for Vega (d ~ 25LY) traveling at 99.99% the speed of light. As soon as he arives, the ship turns around, How old are they when John returns
Type yourAfter a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
A capacitor with parallel circular plates of radius R is discharging via a current of 11.0 A. How much displacement current is encircled by the loop
An old wooden tool is found to contain only 18% of 146C that a sample of fresh wood would. How old is the tool
A 24.5 kg child is standing on the outer edge of a merry-go-round which has moment of inertia 989 kg*m2 and radius 2.40m. Find the angular velocity if the child moves to a final position
1.8 kilograms of water are changed, from ice at 0ËšC into liquid water at 0ËšC determine the change in mass of the water
Some birthmarks can be removed by exposure to 585 nm laser light. Pulses are strongly absorbed by hemoglobin in the capillaries in the birthmark, What is the power of the laser pulse
This question requires two answers. The isotope 12N undergoes radioactive decay to form 12C. What charged particle is emitted in the decay process
A 24V battery is connected in series with a resistor, R=4 ohms and an inductor L=2H. What is the energy stored in the inductor
A square loop of wire with sides of length l=0.15m is pulled horizontally to the right at a constant speed of 5.0m/s into a perpendicular magnetic field of strength B=0.37T directed into the page
A circular loop of wire of resistance R= .500 ohms and radius r=8.00cm is in a uniform magnetic field out of the page, Find the rate at which the field is changing
The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At 22.0 °C the air gap between the rods is 1.99 x 10-3 m
Two resistors of 7.0kohms and 10.0kohms are connected in series. A 4.0kohm resistor and a 9.0kohm resistor are connected in series to each other, What is the equivalent resistance of the resistors