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The winner of the competition wants to know if he has broken the world record for the break shot of 32 mph. His ball landed a distance 15.00 ft from the table edge. Calculate his break shot speed.
Question: Point charge 2.0 uC is located at x= 0, y= 0.30m , point charge -2.0uC is located at x = 0 y = -0.30 . What are (a)the magnitude and (b)direction of the total electric force that these cha
The peak instantaneous current in a certain lightning stroke is 21,700 A vertically upward. The current is approximately constant at this value for 1.2 10-4 s.
Determine (a) when the ball will hit the elevator, (b) where the ball will hit the elevator with respect to the location of the man.
Find the average speed of the electrons in a 1.7 cm diameter, copper power line, when it carries a current of 52 A. (The density of free electrons in copper is 8.5 1028/m3.)
Calculate stopping distance from 62 mph for a vehicle with a tire/road friction coefficient equal to 0.6, 0.8 and 1.0, successively. Assume the vehicle can be modeled using particle dynamics.
The terminal voltage of a certain battery is measured with the battery disconnected and is found to be 5.94 V. The internal resistance of the battery is 1.11 ? Find the voltage across the battery te
what is the shortest distance you need to walk forward to be at a point where you cannot hear the speakers?
The collector transfers heat by natural convection to the air with a heat transfer coefficient of 3.2 Btu/h.ft2. degree F and also transfers heat by radiation to the sky. Calculate the total heat lo
My question is this For an air conditioner used as a heat pump, the coefficient of performance can be as high as the inverse of the Carnot efficiency which is run between the temperature inside (27
Question: A 5.3 -thick layer of oil (n=1.46) is sandwiched between a 1.1cm -thick sheet of glass and a 2.1cm -thick sheet of polystyrene plastic (n=1.59) (1)How long (in ns) does it take light incid
A beam of light from a monochromatic laser shines into a piece of glass. The glass has thickness L and index of refraction n=1.5 . The wavelength of the laser light in vacuum is L/10 and its freque
A photomicrograph was taken of a specimen at a magnification of 100X, and it was determined that the average number of grains per square inch was 200.
Explain the changes in the velocity, acceleration, and net force of a man with a parachute jumping off a plane. You need to describe the changes with valid scientific principles.
Compute the concentration of Li (in wt%) that is required. Assume that the respective densities of Li and Al are 0.534 and 2.71 g/cm3.
Given that the densities of C and Fe are 2.25 and 7.87 g/cm3, respectively, what is the concentration of carbon (in kg/m3) in the alloy?
(1) What is the wavelength of the second laser that would place its second maximum at the same location as the fourth minimum of the first laser, if d= 0.350mm ?
Gold forms a substitutional solid solution with silver. Calculate the number of gold atoms per cubic centimeter (in atoms/cm3) for a silver-gold alloy that contains 19.0 wt% Au and 81.0 wt% Ag.
Two lasers are shining on a double slit, with slit separation. Laser 1 has a wavelength of d/20 , whereas laser 2 has a wavelength of d/15. The lasers produce separate interference patterns on a sc
(a) Using the outward normal for each face of the cube, find the electric flux through each of the six faces. (Let the side of the cube in the x, z plane be the bottom of the cube, the side of the c
The spring constant is k=8 lb/in. and the tension in the cable is 3 lb. If the cable is cut, determine (a) the maximum displacement of the block, (b) the maximum speed of the block.
A small object, which has a charge q = 8.2 µC and mass m = 9.80 x10^-5 kg, is placed in a constant electric field. Starting from rest, the object accelerates to a speed of 2.08 x10^3 m/s in a
What is the average density of this solid solution? What is the average atomic weight? C) What is the volume of the unit cell in cm3? D) What is the unit cell dimension in cm?
Gold forms a substitutional solid solution with silver. Compute the weight percent of gold that must be added to silver to yield an alloy that contains 5.5 × 1021 Au atoms per cubic centimeter
Given the indices of refraction and of material 1 and material 2, respectively, rank these scenarios on the basis of the phase shift in the refracted ray. (n1 air=1.00 n2 water=1.33) (n1air=1.00 n2