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What is the apparent distance from the upper benzene surface to the bottom of the water layer when it is viewed at normal incidence?
A flashlight on the bottom of a 4.00 m deep swimming pool sends a ray upward and at an angle so that the ray strikes the surface of the water 1.70 m from the point directly above the flashlight. Wh
Assume that a ray is incident at an angle of 30.0° (relative to the normal) on a film with an index of refraction 1.33. Calculate the minimum thickness for constructive interference of visible l
A 15.0 {rm kg} rock slides on a rough horizontal surface at 6.00 {rm m/s} and eventually stops due to friction. The coefficient of kinetic friction between the rock and the surface is 0.200.
Now, when both pipes vibrate at their fundamental frequencies, a beat frequency of 11.1 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 343 m/s.
A 22 cm diameter bowling ball has a terminal speed of 77m/s. What is the mass of the ball?
What is a sudden pulling force in physics? I'm doing crossword puzzle. The first letter is "l" and the third letter is "r". It has five letters.
A tennis player receives a shot with the ball of mass 0.060kg traveling horizontally at v=43 m/s and returns the shot with the ball traveling horizontally at 60 m/s in the opposite direction. (a) W
The first atomic bomb released energy equivalent to 20 kilotons of TNT. If 1 ton of TNT releases 4x109 J, how much uranium was consumed through fission in the bomb?
Suppose a planet had a density that varied with radius according to the equation, ρ =A/r, where A is some constant. Determine a formula that gives the central pressure for this type of planet.
Two friends, Al and Jo, have a combined mass of 136 kg. At an ice skating rink they stand close together on skates, at rest and facing each other, with a compressed spring between them. The spring i
It has been estimated that the Earth contains 109 metric tons of natural uranium that can be mined economically. How many atoms of 235U are there in 109 metric tons of natural uranium?
A uniform electric field witha magnitude of 250 N/C is directed in the positive xdirection. A 12 uC charge moves from the origin to the point(20.0 cm, 50.0 cm). What is the change in the electrical
If the create has a mass of 110 and is 1.6 tall and 0.80 in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its cente
A cylindrical container with a cross-sectional area of 66.2 holds a fluid of density 816kg/m3, and the bottom of the container the pressure is 118 kPa. What is the depth of the fluid?
By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? treat the coffee as though it were water and neglect energy exchanges with the environment.
The center of the barbell is mounted on the end of a low mass rigid rod of length b = 0.525 m (see Figure), and this rod rotates clockwise with angular speed 100 rad/s. In addition, the barbell rota
The angle of refraction for the light entering the slab is the same as when the slab was in a vacuum. What is the index of refraction of the liquid?
Jimmy throws an apple to Billy at an angle of 52? with respect to the horizontal. The acceleration of gravity is 9.8 m/s2 . With what speed v0 must he throw the apple to reach Billy? Answer in units o
A boy drags a wooden crate with a mass of 20 kg, a distance of 12 m, across a rough level floor at a constant speed. What is the coefficient of friction of the crate on the floor?
a. If the box is moving at a constant speed of 0.35m/s and the coefficient of kinetic friction is 012. What is the magnitude of F? b. What is the magnitude of F if the box is speeding of with a cons
A 120 granite cube slides down a 40 degree frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 290 steel cube at rest. How high above the table should the
The light of frequency 6 X10 to the 14th power Hz falls on a pair of slits that are .0002 cm apart. The center of the slits is 50 cm from the screen. How far from the central bright line will the f
The beam is not deflected in this region. If the magnetic field has a magnitude of 0.731 T and points in the +y direction, find the magnitude and direction of the electric field. Give the x, y, and
A 54 kg person escapes from a burning building by jumping from a window 25 m above a catching net. Assuming that air resistance exerts a 95 N force on the person during the fall, determine the perso