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Zinc has a work function of 4.30 eV. A 4.80 eV photon strikes the surface and an electron is emitted. What is the maximum possible speed of the electron?
A cannon with mass of 2000kg fires a 10kg shell at an angle of 60 degrees above the horizontal. what is the velocity of the cannon ball
In a head-on collision, the car stops in 0.23 {rm s} from a speed of 17 {rm m}/{rm s}. The driver has a mass of 77 {rm kg}, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fract..
A long string with a mass/length of 500 g/m is placed under a tension of 400 N, What is the wavelength of the resulting wave and What is the wave speed
A student on a piano stool rotates freely with an angular speed of 3.10 rev/s. The student holds a 1.40-kg mass in each outstretched arm, 0.759 m from the axis of rotation, Calculate the initial and final kinetic energy of the system
Calculate your apparent weight at the top and bottom of a Ferris wheel, given that the radius of the wheel is R meters, it completes one revolution every T seconds
To get an idea of how empty deep space is on the average, perform the following calculations. Find the radius of a sphere of this volume in light years
It's nighttime, and you've dropped your goggles into a swimming pool that is 3.0m deep. If you hold a laser pointer 1.2m above the edge of the pool, How far are the goggles from the edge of the pool
Two 3.50g beads (point charges) are hanging on threads and repel each other after being equally charged. What is the charge on each bead
A uniform rod of mass 3.05×10^-2?2kg and length 0.370m rotates in a horizontal plane about a fixed axis through its center, compute the angular speed of the rod after the rings leave it
When a battery is connected to the plates of a 5.00-µF capacitor, it stores a charge of 30.0 µC. What is the voltage of the battery
An air-core solenoid is attached to a 6 V battery via a switch. The switch is closed, what is the resistance and inductance of the coil
When point charges q1 = +1.7 ?C and q2 = +8.7 ?C are brought near each other, each experiences a repulsive force of magnitude 0.30 N
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