# Sebastian Acosta

Physics teacher | Verified Expert

I hold a degree in Physics from Clarkson University, where I honed my passion for unraveling the mysteries of the universe. With a penchant for inquiry and discovery, I thrive on guiding students through the complexities of physics. My journey from Clarkson has equipped me with a deep understanding of theoretical concepts and practical applications. From classical mechanics to quantum theory, I am committed to fostering a deeper appreciation for the wonders of physics. With tailored approaches and engaging strategies, I aim to inspire curiosity and instill confidence in every student I teach. Let's explore the universe together.

## Questions

A wheel has a radius of 4.1m. How far(path length) does a point on the circumference travel if the wheel is rotated through angles of 30° , 30 rad, and 30 rev, respectively?

If a rocket with a mass of #7 kg# vertically accelerates at a rate of # 3/2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 6 seconds?

How much work does it take to raise a #2 kg # weight #1 m #?

A model train, with a mass of #3 kg#, is moving on a circular track with a radius of #2 m#. If the train's rate of revolution changes from #5/3 Hz# to #1/8 Hz#, by how much will the centripetal force applied by the tracks change by?

How does an electric motor operate?

The gas inside of a container exerts #5 Pa# of pressure and is at a temperature of #190 ^o K#. If the pressure in the container changes to #32 Pa# with no change in the container's volume, what is the new temperature of the gas?

A projectile is shot at an angle of #pi/4 # and a velocity of # 12 m/s#. How far away will the projectile land?

A model train, with a mass of #4 kg#, is moving on a circular track with a radius of #6 m#. If the train's kinetic energy changes from #12 j# to #48 j#, by how much will the centripetal force applied by the tracks change by?

What is the moment of inertia of a pendulum with a mass of #3 kg# that is #3 m# from the pivot?

A box with an initial speed of #8 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #1/6 # and an incline of #pi /3 #. How far along the ramp will the box go?

A pinball bangs against a bumper, giving the ball a speed of 52 cm/s. If the ball has a mass of 50.0 g, what is the ball's kinetic energy in joules?

A solid disk, spinning counter-clockwise, has a mass of #8 kg# and a radius of #5/2 m#. If a point on the edge of the disk is moving at #9/4 m/s# in the direction perpendicular to the disk's radius, what is the disk's angular momentum and velocity?

What is the angular momentum of a rod with a mass of #8 kg# and length of #7 m# that is spinning around its center at #19 Hz#?

In parallel RC circuits, is it true that the larger the value of C, the larger the phase angle?

What is the angular momentum of a rod with a mass of #15 kg# and length of #4 m# that is spinning around its center at #24 Hz#?

A beam of light passes from zircon to an unknown material at an angle of 32°. After passing through the material, the beam makes an angle of 47.15° compared to the perpendicular. What is the index of refraction of the second material?

A car is traveling with a velocity of 30 m/s has a kinetic energy of 800,000 J. What is the mass of the car?

An object with a mass of #5 kg# is on a plane with an incline of # - pi/8 #. If it takes #8 N# to start pushing the object down the plane and #8 N# to keep pushing it, what are the coefficients of static and kinetic friction?

If you want to study the relationship between temperature and pressure of a gas, which factor must be held constant?

Quick explanation. An object will stay afloat as long as it weighs less than or equal to its displaced fluid weight in water?