Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
The flywheel is a uniform solid cylinder with mass 1600 kg and radius 0.600 m. The bus body does work against air resistance and rolling resistance at the average rate of 18.0 hp as it travels with
The listener and the speakers are all in the same hori- zontal plane and the speed of sound is 340 m/s. [Hint: Start with determining the maximum path difference between the two waves at points on t
Cellphones use radio waves, some at a frequency of 840.1 MHz. An efficient antenna is a quarter of a wavelength long. Such an antenna for a cellphone would have a length of (answer should be in cm).
A simple harmonic oscillator consists of a block of mass 3.90 kg attached to a spring of spring constant 169 N/m. When t = 3.00 s, the position and velocity of the block are x = +0.129 m and v = +3.
A vertical magnetic field decreases at a rate of 57.0 mT/s. A flat circular coil of 1000 turns with a 25.0 cm diameter has a 106 uF capacitor across its terminals. If the coil is placed perpendicula
On average, Venus is 0.72 AU from the sun and its surface temperature is 735 K. Calculate how much of this is due to Venus's greenhouse effect? (On average, Venus reflects 75% of incoming light back
A tank of compressed oxygen gas at a doctor's office has a pressure of 105 times atmospheric pressure. If the volume of the tank is 525 cm3, how many oxygen molecules does it contain? Answer in mole
Determine the scalar potential due to a 1m-long horizontal line of charge with 10mC total charge. Use this result to evaluate the electric field at the centre of a square constructed from four of th
A body of mass 3kg with an initial velocity of 2 m/s makes an elastic collision with another body (m2= 2kg) at resvelocity of the center mass of the two body system before and after the collision.
Two charges repel each other r with a force of 10^ -6N when they are 10 cm apart. When they are brought closer together until they are 2 cm aprt, the force between them becomes:
You are driving north on 107th Avenue at a speed of 29.2 mph. A police car whose siren produces a sound at a frequency of 549 Hz is approaching from the opposite direction at a speed of 55.9 mph. A
You are driving east on 8th Street (Tamiami Trail) at a speed of 27. In the rearview mirror, you see an ambulance approaching at what you estimate to be roughly twice your speed. You hear the siren
A guitar string is tuned to an E4 (that is the standard tune for the thinnest string on a guitar.) If the scale length is 24.4 inches, what is the wave speed on that string?
The mass and volume of an American penny made after 1982 are 2.5 g and 0.36 cm3. How many pennies can be placed in the racquetball boat without sinking it? (The density of water is 1000 kg/m3.)
Light is incident of the surface of metallic sodium, whose work function is 2.3 eV. The maximum speed of the photoelectrons emitted by the surface is 3.00 × 106 m/s. What is the wavelength of
A particle lives for a short time before breaking apart into otherparticles. Suppose it is moving at a speed of 0.972c, and an observer who is stationaryin a laboratory measures the particle's life
A uniform rectangular plate is hanging vertically downward from a hinge that passes along its left edge. By blowing air at 9.70 m/s over the top of the plate only, it is possible to keep the plate i
Assume that the speed of the water in the reservoir is zero, and that the water flow is steady. Ignore both air resistance and the height difference between the reservoir and the muzzle.
A coil of Nichrome wire is 27.0 m long. The wire has a diameter of 0.390 mm and is at 20.0°C. (a) If it carries a current of 0.560 A, what is the magnitude of the electric field in the wire?
A long straight wire carries a current of 46 A. An electron, traveling at 1.0 x 107 m/s, is 6.0 cm from the wire. What is the magnitude of the magnetic force on the electron if the electron velocity
Find the minimum diameter of an l = 19.3 m long steel wire that will stretch no more than 8.20 mm when a mass of 304 kg is hung on the lower end. (Hint: The Young's modulus of steel is 200.0 GPa.)
A block of mass ‘m' is suspended from the ceiling of a stationary standing elevator through a spring of spring constant ‘k'. Suddenly the cable breaks and the elevator starts falling fre
One afternoon I was sitting on a bench in the park when a boy went running by me and then lept into a swingset that was just hanging there at rest. I noticed when this happened the swingset swung ab
At how many points does the listener observe destructive interference? The listener and the speakers are all in the same horizontal plane and the speed of sound is 340 m/s. [Hint: Start with determi
What is the spacing between the first- order bright fringe and the second order dark fringe? How many total bright fringes are seen on the screen?