# Axel Acevedo

Physics teacher | Tutor for 5 years

I hold a degree in Physics from Texas A&M University at Galveston. My passion lies in unraveling the mysteries of the universe through scientific inquiry. With a strong foundation in theoretical and applied physics, I'm dedicated to fostering a deeper understanding of complex concepts for students. Through engaging lessons and personalized guidance, I aim to empower learners to excel in their academic pursuits. Let's embark on a journey of discovery together, where every question is an opportunity to expand our knowledge and curiosity.

## Questions

How do simple machines change the direction of force?

A spring with a constant of #4# #kgs^-2# is lying on the ground with one end attached to a wall. An object with a mass of #1# # kg# and speed of #3# # ms^-2# collides with and compresses the spring until it stops moving. How much will the spring compress?

An object with a mass of #1 kg# is pushed along a linear path with a kinetic friction coefficient of #u_k(x)= 2e^x-x+3 #. How much work would it take to move the object over #x in [1, 4]#, where x is in meters?

What are resistors used for?

Some very hot rocks have a temperature of #450 ^o C# and a specific heat of #270 J/(Kg*K)#. The rocks are bathed in #15 L# of boiling water. If the heat of the rocks completely vaporizes the water, what is the minimum combined mass of the rocks?

Since an airplane has no brakes, how does an airplane slow down?

An object with a mass of #8 g# is dropped into #50 mL# of water at #0^@C#. If the object cools by #5 ^@C# and the water warms by #70 ^@C#, what is the specific heat of the material that the object is made of?

How does the strength of an object's electric field change with distance?

How are electromagnets used in electric bells?

An object, previously at rest, slides #5 m# down a ramp, with an incline of #(3pi)/8 #, and then slides horizontally on the floor for another #15 m#. If the ramp and floor are made of the same material, what is the material's kinetic friction coefficient?

A cylinder has inner and outer radii of #9 cm# and #14 cm#, respectively, and a mass of #9 kg#. If the cylinder's frequency of counterclockwise rotation about its center changes from #1 Hz# to #7 Hz#, by how much does its angular momentum change?

What is the difference between a meson and a boson?

How much power is produced if a voltage of #3 V# is applied to a circuit with a resistance of #9 Omega#?

An object with a mass of #5 kg# is on a plane with an incline of #pi/8 #. If the object is being pushed up the plane with # 18 N # of force, what is the net force on the object?

An object is at rest at #(2 ,9 ,5 )# and constantly accelerates at a rate of #1/5 m/s# as it moves to point B. If point B is at #(6 ,2 ,7 )#, how long will it take for the object to reach point B? Assume that all coordinates are in meters.

An object has a mass of #5 kg#. The object's kinetic energy uniformly changes from #150 KJ# to # 42KJ# over #t in [0,8s]#. What is the average speed of the object?

A container with a volume of #12 L# contains a gas with a temperature of #240^o C#. If the temperature of the gas changes to #420 ^o K# without any change in pressure, what must the container's new volume be?

Initially switch is open, no charge on the capacitor, (a) Close the switch, find #I_i, (i = 1, 2, 3) Q, & V_C# immediately after. (b) Switch is closed for long find #I_i, Q & V_C#. (c) Find #I_i, Q, & V_c# immediately reopened? d) Reopened for long?

Why is the sky blue?

What is the projection of # <3,-6,4># onto #<1,2,-4>#?