# 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

An #8 L# container holds #8 # mol and #9 # mol of gasses A and B, respectively. Every two molecules of gas B bind to one molecule of gas A and the reaction raises the temperature from #370^oK# to #425 ^oK#. How much does the pressure change by?

How do you normalize #( - 4 i - 5 j + 2 k )#?

A ball is thrown into the air at some angle. At the very top of the ball's path, what is always 0?

A projectile is shot from the ground at a velocity of #29 m/s# and at an angle of #(2pi)/3#. How long will it take for the projectile to land?

An object with a mass of # 15 kg# is lying on a surface and is compressing a horizontal spring by #40 cm#. If the spring's constant is # 4 (kg)/s^2#, what is the minimum value of the surface's coefficient of static friction?

A charge of #-2 C# is at #(-5 , 1 , 4 )# and a charge of #-3 C# is at #(0,8,4) #. If both coordinates are in meters, what is the force between the charges?

What is the electric current produced when a voltage of #12 V# is applied to a circuit with a resistance of #96 Omega#?

A spring with a constant of #4 (kg)/(s^2)# is lying on the ground with one end attached to a wall. An object with a mass of #7 kg # and speed of # 5 m/s# collides with and compresses the spring until it stops moving. How much will the spring compress?

A container with a volume of #14 L# contains a gas with a temperature of #140^o K#. If the temperature of the gas changes to #80 ^o K# without any change in pressure, what must the container's new volume be?

What is the voltage produced in the following circuit? please show the calculations so i can understand it better and learn how to do it properly.

What is the moment of inertia of a pendulum with a mass of #9 kg# that is #12 m# from the pivot?

A ball with a mass of #4 kg # and velocity of #3 m/s# collides with a second ball with a mass of #5 kg# and velocity of #- 7 m/s#. If #20%# of the kinetic energy is lost, what are the final velocities of the balls?

If an object is moving at #4 m/s# and accelerates to #6 m/s# over 3 seconds, what was the object's rate of acceleration?

What does the last color band represent on a color-coded resistor?

Gravitational law: which is right?

A sound wave traveling in 20°c air has a pressure amplitude of 0.5 pa. what is the intensity of the wave?

Objects A and B are at the origin. If object A moves to #(8 ,5 )# and object B moves to #(9 ,-2 )# over #2 s#, what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.

Sometimes when an object is falling, all of the PE is not completely converted to KE. What happens to it?

An object with a mass of # 2 kg# is traveling in a circular path of a radius of #2 m#. If the object's angular velocity changes from # 2 Hz# to # 3 Hz# in # 1 s#, what torque was applied to the object?

What is the cross product of #[3,2, 5]# and #[0,8,5] #?