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What is the electric potential at (3.0 m , 0)? Express your answer using two significant figures.
If such drivers are traveling on a straight road at 30 mph (44 ft/s) and their cars can decelerate at 2 ft/s^2, determine the shortest stopping distance d for each from the moment they see the pedes
How far down the hill does the shell strike if the hill subtends an beta=36.0 degrees from the horizontal? (ignore air friction.)
Calculate the speed of a proton after it accelerates from rest through a potential difference of 150 V . Express your answer using two significant figures.
A computer monitor accelerates electrons and directs them to the screen in order to create an image. If the accelerating plates are 1.65 cm apart, and have a potential difference of 2.00×10^4
If the electric field between the plates has a magnitude of 2.7×10^4V/m , what is the potential difference between the plates? Express your answer using two significant figures.
After this time the electric field is turned off and the ball returns to the surface. Find the height in meters which the ball is able to be lifted off the surface. I got .0215 m but it is wrong.
The human eye can readily detect wavelengths from about 400 to 700 . If white light illuminates a diffraction grating having 750 limes/mm, over what range of angles does the visible m= 1 spectrum e
A 5.0 -thick layer of oil (n=1.46) is sandwiched between a 1.5 -thick sheet of glass and a 2.3 -thick sheet of polystyrene plastic (n=1.59). How long (in ns) does it take light incident perpendicula
A gas cylinder holds 0.330mol of O2 at 150C and a pressure of 3.30atm. The gas expands adiabatically until the volume is doubled. What is the final pressure? What is the final temperature?
a) How far down the hill does the shell strike if the hill subtends an beta=36.0 degrees from the horizontal? (ignore air friction.) b) How long will the mortar shell remain in the air?
A triple-slit experiment illuminates three equally spaced, narrow slits with light of wavelength lambda. The intensity of the wave from each slit is I1.
A barrel contains a 0.120 m layer of oil of density 610 kg/m^3 floating on water that is 0.290m deep. Part A: What is the gauge pressure at the oil-water interface?
What is , the acceleration of the puck, and , the angle of the puck's motion? The friction between the puck and the table's surface is negligible.
Find the absolute pressure, P, in the cylinder. b) If a mercury manometer is used to measure the pressure in the cylinder, find the height, h, of the mercury column in mm.
The direction of the beam is then slowly rotated around an axis parallel to the slits to an angle of 1.0. By what distance does the central maximum on the screen move?
Determine a) the displacement of the balloon from the station A when t=2s b) the magnitude and angular orientation of the velocity and acceleration when t=2s.
First show all forces and reaction at the instant of jumping, and second will show the situation when the skydiver reaches terminal velocity. IF you can't draw a person then approximate them as a sp
If the coefficient of kinetic friction between the 50-kg crate and the ground is .3, determine the distance the crate travels and its velocity when t=3s.
At the instant is passes through an altitude of 20,000 ft above sea level, what are the time rate of change of the temp, pressure, and density surrounding the air?
Calculate the minimum volume in cm3 of a pure methanol fuel tank required to run a soldier's uniform for 3 days. The nominal power is 20W. There are 10 cells in the stack in series, and the total st
A spherical ballon with a diameter of 6m is filled with helium at 20C and 200kPa. Determine the mole number and the mass of the helium in the balloon.
A 10 ft long chain rests on a frictionless horizontal table such that half of its length is stretched out on the table and half hangs freely over the edge. How much time does it take for the chain
A hockey player hits a puck so that it comes to rest in 10s after sliding 100ft on the ice. Determine (a) the initial velocity of the puck, (b) the coefficient of friction between the puck and the
A particle is projected up a plane that makes a 25° angle with the horizontal. If initial velocity is 15 m/s and coefficient of kinetic friction is 0.25, how long will it take for the particle