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1) Suppose a 0.3 kg mass on a spring tha has been compressed 0.10m has elastic potential energy of 1 J. What is the spring constant? Also, how much further must the spring be compressed to triple the elastic potential energy?
2) A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 4.0cm. If a timer is started when its displacement is a maximum (hence x=4cm when t=0), what is the acceleration magnitude when t=3s?
3) A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 4.0cm. If a timer is started when its displacement is a maximum (hence x=4cm when t=0), what is the speed of the mass when t=3s?
What is the force on the bottom of a 36.0 cm tall cylindrical beaker with a diameter o 6.0 cm with water filled to its brim, answers in N.
If a ball has a net positive charge of 57 ?C, how many electrons must be added to make the ball neutral
what is the buoyant force on a beachball of diameter 20.0 cm that is HALF submerged in a fresh water pool
A disk of radius 1.00 m is rotating with 5.39 rad/s and 5.39 rad/s2. What is the magnitude of the linear acceleration of a point on the outer edge of disk? (Give the answer in three significant figures and SI units)
The core of a star collapses during a supernova, forming a neutron star. find the neutron star's angular velocity in revolutions per second, given the core's was originally 1.0 revolution per 30 days
A box of books weighing 334 N is shoved across the floor by a force of 479 N exerted downward at an angle of 33° below the horizontal. What is the maximum coefficient of kinetic friction between the box and the floor that allows the box to move with ..
A helium weather balloon is used to lift a meteorological sensor package high up into the atmosphere. Calculate the number of moles of helium in the balloon
A point source of light is located at the bottom of a steel tank, and an opaque circular card of radius 5.7 cm is placed over it. What is the index of refraction of the fluid
It is possible for a muon to be captured by a proton to form a muonic atom. A muon is identical to an electron except for its mass, Calculate the magnitude of the lowest energy state
A hydrogen atom at rest makes a transition from the n=8 state to n=3. Find the wavelength of the emitted photon
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 61.22 diopters, How far is the blackboard from her eyes
Two train cars are on a straight, horizontal track. One car starts at rest and is put in motion with a constant acceleration of 1.01 m/s2. Where will the cars collide
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