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A spaceship is on a straight-line between Earth and its moon. At what distance from Earth is the net gravitational force on the spaceship zero?
Determine the wavelength of light emitted when a hydrogen atom makes a transition from the n = 13 to the n = 3 energy level according to the Bohr model. The Rydberg constant is 1.09737 × 10^7 m?1 .Answer in units of nm
A laser is used in eye surgery to weld a detached retina back into place. The wavelength of the laser beam is 511 nm, while the power is 1.5 W. how many photons are emitted by the laser
The air speed indicator of a plane that took off from Detroit reads 343 km/h and the compass indicates that it is heading due east to Boston. Calculate the speed of the plane with reference to the ground
An airplane propeller is 1.95m in length (from tip to tip) with mass 122kg and is rotating at 2500rpm(rev/min) about an axis through its center. What would its angular speed have to be, in rpm
A 547-kg satellite is in a circular orbit about Earth at a height above Earth equal to Earth's mean radius. Find the gravitational force acting on it
A 0.80-m-long organ pipe that is open at both ends resonates in the fundamental when a tuning fork of unknown frequency vibrates near one end of the pipe. what would be the fundamental frequency of a 0.80-m-long pipe that is open at one end and cl..
A recent theory suggests that time may be quantized, and that the quantum, or elementary amount, of time is given by the equation t= h/(mpc^2), where h is blank constant, mp is the portion mass and c is the speed of light. comfirm that this equati..
The 1.48cm3 volume betweenthe plates of a 111 pF parallel-plate capacitor is filled with adielectric. The area of each plate is 0.00222 m2 and the plates are0.666 mm apart. Find the permittivity of the dielectric.
A 7.0 k resistor is in series with a 26.0-mH inductor, Calculate the impedance of the circuit for the following source frequencies
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.947 rad/s. Calculate the total angular momentum of the system
A person with nearsightedness was prescribed with contact lenses of power -2.0 D. What is the range of object distances that this person can see clearly with the wrong lenses
Optimus Prime is flying straight up at 75m/s when he accidentally drops his mega-ray blaster and it falls58 m to the ground below. Calculate how long it takes for his mega-ray blaster to hit the ground.
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