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You hit a 0.2 kg golf ball up at 40o from the horizontal. It travels for 4.86 s and stops on an elevated green 10 m above its initial height traveling down at an angle of 35.4o below the horizontal
The power output of a sound system is increased by a factor of 25. By what factor should you adjust your distance from the speakers
Suppose a manufacturing plant has an average sound intensity level of 97.0 dB created by 25 identical machines. Find the total intensity created by all the machines
Two coils are at fixed locations. When coil 1 has no current, and the current in col 2 increases at the rate 15.0 A/s, the emfin coil 1 is 25.0mV. what is the magnetic flux passing through coil 2
A small circular loop of area 2.00cm^2 is placed in the plane of, and concentric with, a large circular loop of radius 1.00m. What emf is induced in the smaller loop at t=0.500s
After staying on Penitgy for a few days, the landing craft returns to its mothership. What height does the landing craft attain during this time period
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an archaeologist finds an ancient firepit containing partially consumed firewood, what is the age of the an
After 2.02 days, the activity of a sample of an unknown type radioactive material has decreased to 88.2% of the initial activity. What is the half-life of this material
One of the 61.0cm -long strings of an ordinary guitar is tuned to produce the note B3 (frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string
A landing craft approaches the surface of Penitgy, a planet in a far-away galaxy. The landing craft has two engines attached to the bottom, what is the mass of the landing craft
a 30-cm tall (height) ad 4.0 in diameter plastic tube has a sealed bottom. The mass of the tube if 30.0g. What is the density of the liquid
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 550 kg. Find the kinetic energy stored in the flywheel
A proton traveling with a velocity of 6.20x10^6 m/s in the positive x direction encounters a uniform 0.25 magnetic field in the positive y direction
A camera has a lens w/ a 52 mm focal length and a sensor array that measures 4.82mm x 3.64 mm, how far away from the animal will you have to stand
Assume you knew some unstable particles have a half life of 1.00 seconds when not moving but had a half-life of 5.00 seconds while in a particle accelerator. How fast must the particles have been tr
What is the longest wavelength of light that may be absorbed by a hydrogen atom that starts in the second excited state
A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.0 cm below the aim point. What is the bullet's flight time
You are in the neighborhood of a star (radius of 700,000 kilometers) which has emitted so many protons ("solar wind") during its life, What power must the engines of the probe use in order to maintai
A spring is compressed by 0.0748 m and is used to launch an object horizontally with a speed of 2.64 m/s. at what angular frequency (in rad/s) would it oscillate
The left end of a long glass rod 15.0 cm in diameter has a convex hemispherical surface 7.50 cm in radius, Determine the position of the image if an object is placed in air on the axis of the rod
A stereo speaker has a surface area of 0.043 m^2. The acoustic power output of the speaker is 1.7 W. Calculate the intensity of the speaker
When an object is 15.5cm from a lens, an image is formed 14cm. from the lens on the same side as the object. Is it erect or inverted
A 60 kg person jumps from rest off a 5m high tower straight down into the water. find the average force that the water exerts on the diver
A very fast-moving train car passes you, moving to the right at 0.50c. You measure its length to be 12m. How long does David measure the train car to be
120-v rms signal at 60.0hz is applied across a 30.0mH inductor and a 100 resistor. what is the rms value of the voltage across the inductor