# 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

How does friction affect simple harmonic motion?

An astronaut in space is in orbit #250# #km# above the surface of Earth. What is the gravitational acceleration on the astronaut at this altitude?

How can I calculate the temperature of the Sun?

A model train, with a mass of #9 kg#, is moving on a circular track with a radius of #3 m#. If the train's rate of revolution changes from #7 Hz# to #3 Hz#, by how much will the centripetal force applied by the tracks change by?

The position of an object moving along a line is given by #p(t) = sin(2t- pi /8) +2 #. What is the speed of the object at #t = (2pi) /3 #?

An object with a mass of #9# #kg# is on a plane with an incline of #- pi/4 #. If it takes #15# #N# to start pushing the object down the plane and #7# #N# to keep pushing it, what are the coefficients of static and kinetic friction?

A projectile is shot from the ground at an angle of #pi/6 # and a speed of #4 m/s#. When the projectile is at its maximum height, what will its distance, factoring in height and horizontal distance, from the starting point be?

You throw a football straight up into the air with a speed of 12.2 m/s. How high does the ball go?

An object with a mass of #1 kg#, temperature of #350 ^oC#, and a specific heat of #14 J/(kg*K)# is dropped into a container with #16 L # of water at #0^oC #. Does the water evaporate? If not, by how much does the water's temperature change?

A 2.0-kg ball is moving with a constant speed of 5.0m/s in a horizontal circle whose diameter is 1.0 m. What is the magnitude of the net force on the ball?

What is the average speed of an object that is not moving at #t=0# and accelerates at a rate of #a(t) =4-t# on #t in [2,3]#?

What is the coil current 2ms after being connected to the supply if a coil of inductance 0.5H and resistance 500#Omega# is connected across a 250V DC supply? (The time constant T of the circuit is 1ms).

An object has a mass of #4 kg#. The object's kinetic energy uniformly changes from #144 KJ# to # 124KJ# over #t in [0, 6 s]#. What is the average speed of the object?

The position of an object moving along a line is given by #p(t) = 3t - 2cos(( pi )/8t) + 2 #. What is the speed of the object at #t = 3 #?

Nestor finished a 42- kilometer bicycle race in 1 hour 45 minutes. What was his average speed In kilometers per hour?

An object has a mass of #9 kg#. The object's kinetic energy uniformly changes from #99 KJ# to # 45 KJ# over #t in [0, 4 s]#. What is the average speed of the object?

A has a mass of 40 kg. What is the mass of the child in grams?

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?

How much work would it take to horizontally accelerate an object with a mass of #8 kg# to #3 m/s# on a surface with a kinetic friction coefficient of #3 #?

An object travels North at # 2 m/s# for #7 s# and then travels South at # 4 m/s# for # 4 s#. What are the object's average speed and velocity?