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Two railroad cars, each of mass 7850kg and traveling 85km/h in opposite directions, collide head-on and come to rest. How much thermal energy is produced in this collision
A 200 mL volume of neon gas is at 1.2 atm of pressure. If it was heated from 250 K to 500 K what is the volume if the pressure is held constant
Calculate the wavelength of light in vacuum that has a frequency of 6.0 1011 Hz and What is its wavelength in water
18th Century cannon had a maximum range of 1.10 miles when fired on level ground. Find the velocity of the cannonball as it leaves the cannon
A distant galaxy emits light that has a wavelength of 699.1 nm. On earth, the wavelength of this light is measured to be 701.6 nm, Decide whether this galaxy is approaching or receding from the earth
A hydrogen atom initially in its ground state (n =1) absorbs a photon and ends up in the state for which n = 3. What is the energy of the absorbed photon
a positive charge of -4 microcoulombs is llocated at the center of a spherical shell of inner radius 2cm and outer radius 3cm, what is the total charge on he inner shell
A uniform wooden plank of mass 15kg and total length 10m rests on two supports. Find the forces of the two supports on the plank
Consider a flagpole (mass 20kg and length 10m) attached to the wall by a cable, What is the magnitude and direction of the force exerted by the hinge on the flagpole
A silver wire has a cross sectional area A = 2.0 mm2. A total of 9.4 × 1018 electrons pass through the wire in 3.0 s. What is the drift velocity of these electrons
A 24-V battery is connected in series with a resistor and an inductor, with R = 9.0 ? and L = 7.8 H, respectively, Find the energy stored in the inductor when the current reaches its maximum value
The primary coil of a transformer has N1 = 250 turns, and its secondary coil has N2 = 1500 turns. what rms voltage is developed across the secondary coil
Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health, determine the maximum emf that can be generated around the perimeter of a cell in t
You are 1.7m m tall and stand 3.5m m from a plane mirror that extends vertically upward from the floor. What is the minimum height the mirror must have for you to be able to see the top of the table i
A beam of light in air strikes a piece of glas (n = 1.59), Find the angle of incidence if the angle of reflection is twice the angle of refractio
What is the buoyant force acting on a cube of copper that measures 4.49 cm on its each side if it is immersed in water. The density of copper is 8933kg/m3
A swimming pool has dimensions 29 m x 34 m and a flat bottom, what is the total force due to the water on the bottom
The rate of flow of water through a horizontal pipe is 1.98 m3/min. Determine the speed of flow in m/s at a point
Iodine molecules dissociates into atoms after absorbing light of 4500 A.If one quantum of radiation is absorbed by each molecule, Find the KE of the iodine atoms
A ball of mass m=0.5 kg and radius r=0.02m is pushed against a spring of force constant 200N/m, What is the speed of the rolling ball when it leaves the spring
High-speed photos of a 200?g flea jumping vertically show that the jump lasts 1.5ms and involves an average vertical acceleration of 110 g, What's the change in the flea's momentum during its jump
What is the potential diffrence between two infinte parallel plates seperated by a distance d with uniform surface charge densities +s and -s, what is the voltage at positive infinity
A long coaxial cable length of L consists of a cylindrical metal sheath of radioys b surrounding a solid conducting wire with radious a. defining voltage to be zero at infinity
A blue puck with a mass of 3.60×10?2kg , sliding with a speed of 0.180m/s on a frictionless, horizontal air table, makes a perfectly elastic, head-on collision with a red puck with mass m, Fin
The motion of a 25.0 kg mass on the end of a string is uniform circular motion. The magnitude of the tangential velocity of the mass is 5.0 m/s, Calculate the angular momentum of the mass