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You are walking toward a plane mirror at a speed of 3 m/s.
(a) How fast is your mirror image moving relative to the mirror?
(b) How fast is your image moving relative to you?
A baseball and a bowling ball are both rolled off a level table at the same time. which will hit the ground first
Pete slides a crate up a ramp with constant speed at an angle of 27 degrees by exerting a 133 N force parallel to the ramp. How much work has been completed against gravity when the crate is raised a vertical distance of 1.6 m? The coefficient of fri..
A single slit is illuminated with monochromatic light, and a screen is placed behind the slit to observe the diffraction pattern. what would be the width of the central maximum
You are driving along the street at the speed limit (35mph) and 50 meters before reaching a traffic light you notice it becoming yellow. What is your speed as you cross the intersection
the position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t], velocity and acceleration of the cart
A +20 nC point charge is placed on the x axis at x =2.0 m, What is the direction of the electric field at the origin
An iron tower in is 340 meters tall on a cold day (=-8l4 degrees Celsius). What is the hight of the tower on a hot day whe the tempeture is 32.4 degrees Celsius
Consider laser eye surgery, in which laser light with a wavelength of 426 nm at a power output of 1.6 W is used to reattach a detached retina. how many photons are emitted by the laser
A circuit is powered by a 12.0 V battery in series with R1=25 ohms A second set of resistors R2= 75 ohms, What is the voltage drop across the 75 ohm resistor
A physics student in a hot air balloon ascends vertically at constant speed. suppose the following four forces that arise in this situation.
the pressure and temperature of steam entering an adiabatic turbine are 4000kPa and 400 degrees C, respectively. if the pressure and the temperature of the working fluid at the exit are 200kPa and150 degrees C
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1230 Hz. The bird-watcher, however, hears a frequency of 1260 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
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