# Isabella Alvarez

Physics teacher | Tutor for 10 years

I hold a degree in Physics from New Mexico Tech. With a passion for unraveling the mysteries of the universe, I thrive on sharing my knowledge with curious minds. Through interactive sessions, I simplify complex concepts, making physics accessible and engaging for students. Whether it's classical mechanics or quantum theory, I foster a supportive environment where questions are encouraged and critical thinking flourishes. My goal is to inspire a lifelong love of learning and empower students to explore the wonders of science. Let's embark on a journey of discovery together!

## Questions

A ball with a mass of #6 kg # and velocity of #5 m/s# collides with a second ball with a mass of #1 kg# and velocity of #- 7 m/s#. If #50%# of the kinetic energy is lost, what are the final velocities of the balls?

What is the unit vector that is orthogonal to the plane containing # (2i + 3j – 7k) # and # (3i + 2j - 6k) #?

A man wearing a bulletproof vest stands still on roller skates. The total mass is 80 kg. A bullet of mass 20 grams is fired at 400 m/s. It is stopped by the vest and falls to the ground. What is the velocity of the man?

How does angular momentum create a perpendicular force? How does angular momentum create a perpendicular force? How does angular momentum create a perpendicular force?

A model train, with a mass of #8 kg#, is moving on a circular track with a radius of #2 m#. If the train's kinetic energy changes from #72 j# to #0 j#, by how much will the centripetal force applied by the tracks change by?

How do you measure fluid flow?

A charge of #24 C# passes through a circuit every #18 s#. If the circuit can generate #16 W# of power, what is the circuit's resistance?

How does radiation affect the nucleus of an unstable isotope?

An object with a mass of #5 kg# is revolving around a point at a distance of #3 m#. If the object is making revolutions at a frequency of #17 Hz#, what is the centripetal force acting on the object?

If an object is moving at #8 m/s# and accelerates to #32 m/s# over 6 seconds, what was the object's rate of acceleration?

An object with a mass of #5 # # kg# is on a surface with a kinetic friction coefficient of # 4 #. How much force is necessary to accelerate the object horizontally at # 6# #ms^-2#?

If an object is moving at #15 m/s# over a surface with a kinetic friction coefficient of #u_k=225 /g#, how much time will it take for the object to stop moving?

What is the difference between constructive and destructive interference?

An object with a mass of #12 kg# is hanging from an axle with a radius of #2 m#. If the wheel attached to the axle has a radius of #6 m#, how much force must be applied to the wheel to keep the object from falling?

A model train with a mass of #5 kg# is moving along a track at #4 (cm)/s#. If the curvature of the track changes from a radius of #16 cm# to #12 cm#, by how much must the centripetal force applied by the tracks change?

What is the SI unit of acceleration?

How does diffraction affect radio signals?

A projectile is shot from the ground at an angle of #pi/4 # and a speed of #3/2 m/s#. Factoring in both horizontal and vertical movement, what will the projectile's distance from the starting point be when it reaches its maximum height?

An object travels North at # 5 m/s# for #3 s# and then travels South at # 4 m/s# for # 6 s#. What are the object's average speed and velocity?

An object with a mass of #1# #kg# is lying still on a surface and is compressing a horizontal spring by #1/4# #m#. If the spring's constant is #3# #kgs^-2#, what is the minimum value of the surface's coefficient of static friction?