Stroboscope is light that flashesand off at constant rate

Reference no: EM13652761

A stroboscope is a light that flashes on and off at a constant rate. It can be used to illuminate a rotating object, and if the flashing rate is adjusted properly, the object can be made to appear stationary. (a) What is the shortest time between flashes of light that will make a three-bladed propeller appear stationary when it is rotating with an angular speed of 25.7 rev/s? (b) What is the next shortest time?

Reference no: EM13652761

Questions Cloud

Disk with radius r has uniform surface charge density. : A disk with radius R has uniform surface charge density. (a) By regarding the disk as a series of thin concentric rings, calculate the electric potential V at a point on the disk's axis a distance x from the center of the disk.

Diffusion and concentration gradients : Diffusion and concentration gradients

What is the amplitude of the motion of the air molecules : The sound intensity of 1.4x10-12 J/m2s is the threshold of hearing for humans. What is the amplitude of the motion of the air molecules if the speed of sound in the air is 331 m/s and the density of air is 1.2 kg/m3?

Space station consists of two donut-shaped living chambers : A space station consists of two donut-shaped living chambers, A and B, that have the radii 3.20 x10 ^2 m and 1.10 X10^3 m respectively. As the station rotates, an astronaut in chamber A is moved 1.51 x 102 m along a circular arc. How far along a circ..

Stroboscope is light that flashesand off at constant rate : A stroboscope is a light that flashes on and off at a constant rate. It can be used to illuminate a rotating object, and if the flashing rate is adjusted properly, the object can be made to appear stationary.

How long does it take him to reach the south shore : A 700 N man stands in the middle of a frozen pond of radius 5.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.2 kg physics textbook horizontally t..

Disconnected from the battery and connected across a second : A 0.9 µF capacitor is charged to a potential difference of 10.0 V. The wires connecting the capacitor to the battery are then disconnected from the battery and connected across a second, initially uncharged, capacitor

The drawing shows a collision between two pucks : The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.027 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.067 kg and is initially at re..

Calculate the magnetic field at the geometric center of loop : A wire is shaped into a rectangle of dimensions A × B. The wire loop carries a current of I amps. Calculate the magnetic field at the geometric center of the loop.

User Account

All Pages