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An aspiring physicist wants to build a scale model of a hydrogen atom for her science fair project. If the atom is to be 1.20 m in diameter, how big should she try to make the nucleus? (This may be difficult to do.)
___________ µm
An airoplane takeoff speed is 320km/h. if its average acceleration is 2.9m/s^2, how long is it on runway after starting its takeoff roll.
A 0.6410-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. Later, you notice that the ice cube has completely melted into a puddle of water.
The Space Shuttle travels at a speed of about 7.60 103 m/s. The blink of an astronaut's eye lasts about 120 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye?
A 240g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. If the total energy of the system is 3J.
A plane diving with constant speed at an angle of 51.7° with the vertical, releases a package at an altitude of 437 m. The package hits the ground 2.93 s after release. How far horizontally does the package travel.
If the electric field in an EM wave in free space has a peak magnitude of 7.5*10^-5 v/m, what is the peak magnitude of the magnetic field strength
How to calculate the efficient canyon albedo
A radar receiver can be tuned to detect signals in the range of [1750 µm to 2750 µm]. What is the frequency difference between the minimum and maximum wavelength
When the coil of a motor is rotating at maximum speed, the current in the windings is 4.33 A. When the motor is first turned on, calculate the resistance of the windings.
A sinusoidally varying voltage is represented by V(t) = (75 V)sin(120?t). What are its frequency and peak voltage
A stone is thrown vertically upward with a speed of 16.0 m/s. How fast is it moving when it reaches a height of 12 m? How long is required to reach this height?
An infinitely long wire is formed as in the diagram on your assignment. It is formed so that it has a circular portion of R = 50cm and the straight portion is located at a distance r from the center of the circular portion. Determine r (in cm) suc..
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