Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
A 470 kg cannon fires a 10 kg cannonball with a speed of 200;{rm m}/{rm s} relative to the muzzle. The cannon is on wheels that roll without friction. When the cannon fires, what is the speed of th
How much time is required for the car to pass the truck? What distance does the car travel in this time? What is the final speed of the car?
An 88 kg spacewalking astronaut pushes off a 640 kg satellite, exerting a 640N force for the 0.60 s it takes him to straighten his arms. How far apart are the astronaut and the satellite after 1.30
A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.05 Hz.Ignoring the mass of the spring, what is the mass of the fish?
When the tire surface is rotating at a maximum speed of 10 m/s, the stone flies out of the tread. The magnitude FN of the normal force that each side of the tread channel exerts on the stone is 1.8
A curve on a level road has a radius of 120 meters and is banked at the correct angle for a speed of 20 meters per second. If a car rounds this curve at 30 meters per second, what is the minimum co
The maximum speed of a 3.5-kg mass attached to a spring is 0.66 m/s, and the maximum force exerted on the mass is 12 N. What is the amplitude of motion for this mass? What is the force constant of the
As a car approaching you driver lays on the horn. The horn has an actual frequency of 350 Hz but you hear the horn as 390 Hz. What is the speed of the car?
A Van de Graaff generator is used to demonstrate the effects of high potential. The device has a radius of 89.0 cm and stands in air. What is its maximum potential?
What is the fundamental frequency of a 0.26 m long organ pipe that is closed at one end, when the speed of sound in the pipe is 354 m/s?
An overhead electric power line carries a maximum current of 125 A. What is the magnitude of the maximum magnetic field at a point 4.50 m directly below the power line?
A 6.6 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.63 T pointing up. During the course of 0.20 s, the field is changed to one of 0.25 T po
A 2Kg rock is released from rest at a height of 29 meters. Ignore air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the followi
A 9400 kg boxcar traveling at 15 m/s strikes a stationary second car. The two stick together and move off with a speed of 9.0 m/s. What is the mass of the second car?
Water pressurized to 3 x10^5 Pa is flowing at 5.0 m/s in a pipe which contracts to 1/3 of its former area. What are the pressure and speed of the water after the contraction?
Assume that light of wavelength 550 nm is being observed. Find the maximum distance these stars can be from the earth.
How much energy is dissipated as heat during a two-minute time interval by a 1.5-kohms resistor which has a constant 20-V potential difference across its leads?
A horizontal desk surface measures 2.08 m x 1.73 m. If Earth's magnetic field has magnitude 0.495 mT and is directed 64.8° below the horizontal, what is the magnetic flux through the desk surfa
What is the thinnest film of on glass that produces a strong reflection for orange light with a wavelength of 600 nm?
As viewed from above, the ball's velocity vector makes an angle of θ =60° with the rod. If the ball's speed just before impact is 100 m/s, what is the angular velocity of the rod immediate
At a distance of 4m from a siren, the sound intensity is 3.6×10-2 W/m2. Assuming that the siren radiates sound uniformly in all directions, calculate the total power radiated?
A 12.0 kg box resting on a horizontal, frictionless surface is attached to a 5.00 kg weight by a thin, light wire that passes over a frictionless pulley. The pulley has the shape of a uniform solid
An electron is projected from one surface directly toward the second. What is the initial speed of the electron if it stops just at the second surface?
Find a new set of orthonormal kets which are simultaneous ^ ^ ^ eigenkets of both A and B . Specify the eigenkets of A and ^ B . Does your specification of eigenvalues completely characterize each
50.0-g copper calorimeter contains 250 g of water at 20.0°C. How much steam must be condensed into the water if the final temperature of the system is to reach 50.0°C?