Two air-track gliders of equal mass are initially moving in the same direction alone a straight line. The rearmost glider has an initial speed of 3.0 m/s and the forward glider has a speed of 2.0 m/s. if the collision is elastic, what are the speeds and directions of the gliders after the collision?
1. (a) What are the wavelength and color of the line in the Balmer spectrum for n2=4? (b) What are the wavelength and color of the line for n2=5? a. a) 486.08 nm and blue b) 434.00 nm and violet b. a) 686.08 nm and red b) 634.00 nm and red c. a) 386.08 nm and ultra violet b) 334.00 nm and ultra violet d. a) 5
1. A myopic person wears eyeglasses with a lens strength of - 3.5 diopters. Where is the far point for that person's eyes? a. 3.5 m b. 25 cm c. 28.6 cm d. infinity 2. Red light of wavelength 632.8 nm is incident on a pair of slits whose separation is 0.75mm. What is the separation of neighboring interfer
See attached file. The package has a weight of 5lb and slides down the chute. When it reaches the curved position, AB, it is traveling at 8ft/s (theta= 0 deg). If the chute is smooth, determine the speed of the package when it reaches the intermediate point C (theta = 30 deg) and when it reaches the horizontal plane (theta= 4
A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of this spring/mass system is 1.6 J. What is the elastic potential energy of the system when the 3.2 kg block is replaced by a 5.6 kg block?
The scheme presents two blocks: The first, Block A, is on a table. Block A is attached to an end of a string. At the end of the table, there is a pulley; the string passes by this pulley, then becomes vertical. At the other end of this string (end of this vertical string) there is Block B. So Block A is attached to Block B by
Please do not put your response in a .pdf format, but Word documents are okay. Thanks! A sled is being held at rest on a slope that makes an angle theta with the horizontal. After the sled is released, it slides a distance d_1 down the slope and then covers the distance d_2 along the horizontal terrain before stopping. Find t
Please do not put your response in a .pdf format, but Word documents are okay. Thanks! Please see attached for actual problem.
3.) A car of mass 1148 kg has kinetic energy of 117 kJ. The driver sees a stalled SUV of mass 2700 kg blocking the intersection. Because he is having a bad hair day, the driver plows into the SUV without braking. The two vehicles stick together (a perfectly inelastic collision) and slide to a stop. a) How much work is done a
What would be the physical consequences if the mass of the electron was twice the observed value?
A package of mass m is released from rest at a warehouse loading dock and slides down a 3.0-m high frictionless chute to a waiting truck. Unfortunately, the truck driver went on a break without having removed the previous package, of mass 2m, from the bottom of the chute. A. Suppose the packages stick together. What is their
A hydroelectric dam holds back a lake of surface area 3.0*10^6 m^2 that has vertical sides below the water level. The water level in the lake is 150 m above the base of the dam.When the water passes through turbines at the base of the dam, its mechanical energyis converted into electrical energy with 90per cent efficiency. 1)
A block of mass M on a horizontal frictionless table is connected to a spring (constant k). The block is at the left and attached to an horizontal spring , and the right end of the spring is itself attached to the wall. The block is set in motion so that it oscillates about its equilibrium point with a certain amplitude Ao. The
Mass m whirls on a frictionless table, held to circular motion by a string which passes through a hole in the table. The string is slowly pulled through the hole so that the radius of the circle changes from L1 to L2. Show that the work done in pulling the string equals the increase in kinetic energy of the mass.
An air-core solenoid with 63 turns is 8.00 cm long and has a diameter of 1.20 cm. How much energy is stored in its magnetic field when it carries a current of 0.780 A? (answer in µJ)
A Desert Eagle chambered for 44 mag in effect launches a bullet from a compressed slide spring (the bullet develops full velocity as the spring develops full compression). If the bullet is 180 grain (11.67 grams) and has a muzzle velocity of 1450 fps (442 m/s), assuming kinetic energy is conserved, what is the spring constant of
Hi. Can someone please show me how to do the following problem? I am not too sure how to approach it. Question: Given an RL circuit in which there's a 9.0 V battery, R = 5.5 ohms, L = 6.1 mH, and there's a switch that can be opened or closed, how much energy is stored in the inductor after the switch has been closed a long t
Does the electric field only move in the + ---> - direction? Or does it depend on the charge, so that the electric field moves in a + ---> - direction for a + charge and moves in the - ---> + direction for a - charge? In the latter case, if a + charge is moving toward the - plate of a capacitor, is its direction negative sinc
Does the electric field always move from positive to negative? If I'm told that a uniform electric field of magnitude 4.1 x 10^5 N/C points in the positive x direction, and a 4.5 micro-C charge moves 6.0 m in the positive x direction, and to find the electric potential energy (which is -11 J), does my equation look like this:
Show that for a mixture of two gases at the same temperature, the ratio of the rms speeds of their molecules is equal to the inverse ratio of the square roots of their molecular masses.
Spring S has a relaxed length of s= .85 m and has a force constant ks= 24 nt/m. Spring P has a relaxed length p= .45 m and has a force constant ks= 60 nt/m. Initially, each spring has one end attached to opposite sides of a box so that the distance between their free ends is d= .70 m apart. Their ends are pulled toward each ot
A metal bar with length L, mass m, and resistance R is placed on frictionless, metal rails that are inclined at an angle (Data) above the horizontal. The rails have negligible resistance. A uniform magnetic field of magnitude B is directed downward. The bar is released from rest and slides down the rails. a) Is the direction
Question: Three liquids are at temperatures of 10 degrees C, 20 degrees C and 30 degrees C, respectively. Equal masses of the first two liquids are mixed, and the equilibrium temperature is 17 degrees C. Equal masses of the second and third are then mixed, and the equilibrium temperature is 28 degrees C. Find the equilibri
After a block and marble collide, the block executes SHM. Develop x(t). Explanation of physics included.
A spring with negligible mass, and force constant k= 60 nt/m, has one end fixed, and the other end attached to a stationary block of mass M= 2.0 kg on a horizontal, frictionless table. At time t=0, a ball of mass m= .25 kg, with horizontal speed of Vb= 50 m/sec to the right before impact, hits the block and bounces off, then
Using Bohr Model determine: 1. energy loss when electron moves from orbit n=3 to n=1 2. calc wavelenght of the light when electron moves orbit from n=3 to n=1
A charge isolated metal sphere of diameter 10cm has a potential of 8000 V relative to V=0 at infinity. Calculate the energy density in the electric field near the surface of the sphere?
A film badge worn by a radiologist indicates that she has received an absorbed dose of 2.3e-5 Gy. The mass of the radiologist is 67 kg. How much energy has she absorbed? Answer in mJ.
The K characteristic X-ray line for tungsten has a wavelength of 1.84 10-11 m. What is the difference in energy between the two energy levels that give rise to this line? Express in joules and eV.
A proton is located at a distance of 0.410 m from a point charge of +8.30 µC. The repulsive electric force moves the proton until it is at a distance of 1.56 m from the charge. Suppose that the electric potential energy lost by the system is carried off by a photon that is emitted during the process. What is its wavelength?
How close would two stationary electrons have to be positioned so that their total mass is 8 times what it is when the electrons are very far apart?