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An automobile travels on a straight road for 44 km at 49 km/h. What is the average velocity (in km/h) of the car during this 88 km trip? (Assume that it moves in the positive x direction.)
A magnifying glass with focal length 15 centimeters is placed 10 centimeters above a stamp. find Where is the image situated
Determine the circumference of a path that follows a great arc at a latitude of 45 degrees around a spherical planet that has a radius R of 5000
use the biot savart to compute the magnetic field at the center of a matalic ring. the ring has a radius of 10^-6 m, compute the magnetic field at the center of the ring
A ball is thrown straight upward with an initial speed of 25 m/s. how high does the ball go before falling back down
An alpha particle (m= 6.64E-27 kg) trapped in the nucleus of an atom can be modelled as a particle moving in a one-dimensional box of width 1.00E-14m. calculate The ground state momentum of the part
An X-ray beam of wavelength 0.01nm strikes a target containing free electrons. determine The change in wavelength of the scattered x-ray
The wavelength associated with the cut-off frequency for silver is 325 nm. Find the maximum kintetic energy of electrons
A guitar string is fixed between two points, 53.0cm apart. Its linear density is 12.0g/m. Now suppose the string is vibrating in its third harmonic. What is the distance between nodes
A uniform disk of mass .53kg and radius 11cm is constrained to rotate on an axis about its center. find the KE attained by the system
Sodium light of wavelength 589nm falls on a diffraction grating and its first-order peak on a screen 60.0cm away falls 3.32cm from the central peak. How many lines per cm does the grating have
A thin film of alcohol (n=1.36) lies on a flat glass plate (n=1.51). When monochromatic light is incident normally on the system, What is the thickness of the film
Two sound waves have intensities of 0.100Wm^2 and 5.00W/^2. What is the difference in their intensity levels
A 20cm long hollow tube of inner diameter 2.8nm, outer diameter 3.0mm is connected to a battery. what is the potential drop across the tube
Starting from the top left corner and moving clockwise the charges are -10 uC, -10 uC, 5 uC, and 5 uC. What is the electric force on the top left charge due to all the other charges
a spherical void of radius r has cut inside the sphere, find the electric field inside the void if its center is displaced by vector R
charge Q is placed at a vertex of a cube with side length, what is the electric flux through each face of the cube
If a simple pendulum of mass 1.059kg and length 9.99cm is moving at 101 cm/s as it passes through the low point of its arc, What is the tension in the string of the pendulum
The particles are as follows: 10 uC at x = 0, y = 0; -5 uC at x = 20, y = 0; -15 uC at x = 20, y = 20; What is the electric field at the center of the square
A cart of mass 1.4 Kg is temporarily held stationary on an incline at 9.5 degrees to horizontal. How much work does gravity do on the cart
The work needed to remove an electron from the surface of sodium is 2.3eV. Find the maximum wavelength of light
A mass-spring system is in simple harmonic motion. It has a spatial frequency F and amplitude A. what fraction of the system energy is kinetic
A professor shipwrecked on Hooligan's Island decides to build a telescope from his eyeglasses and some coconut shells. Which lens should he use as the objective
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
A projectile is fired in such a way that its horizontal range is equal to 14 times its maximum height. What is the angle of projection