# Layla Ahmed

Physics teacher | Tutor for 7 years

I hold a degree in Physics from the University of San Diego. My passion lies in unraveling the mysteries of the universe and making complex concepts understandable to all. With a solid foundation in physics, I offer clear explanations and insightful guidance to students across various topics. Whether it's mechanics, electromagnetism, or quantum physics, I'm dedicated to fostering a deep understanding and appreciation for the wonders of the natural world. Let's explore the boundless possibilities of physics together and embark on a journey of discovery and enlightenment.

## Questions

A charge of #5 C# passes through a circuit every #2 s#. If the circuit can generate #25 W# of power, what is the circuit's resistance?

An object with a mass of #120 g# is dropped into #500 mL# of water at #0^@C#. If the object cools by #30 ^@C# and the water warms by #16 ^@C#, what is the specific heat of the material that the object is made of?

How do nuclear reactions generate electricity?

What is the largest index of refraction that the liquid can have, such that none of the light is transmitted into the liquid and all of it is reflected back into the glass?

An object with a mass of #20 g# is dropped into #120 mL# of water at #0^@C#. If the object cools by #60 ^@C# and the water warms by #3 ^@C#, what is the specific heat of the material that the object is made of?

An object with a mass of #2 kg# is on a plane with an incline of # - pi/3 #. If it takes #12 N# to start pushing the object down the plane and #5 N# to keep pushing it, what are the coefficients of static and kinetic friction?

Is displacement directly proportional to velocity?

When a ball drops from the roof of a building, it speeds up as it falls. What energy transformation is happening?

What is the electric current produced when a voltage of #9 V# is applied to a circuit with a resistance of #39 Omega#?

An object is thrown vertically from a height of #12 m# at # 2 m/s#. How long will it take for the object to hit the ground?

A ball with a mass of # 5 kg# is rolling at #6 m/s# and elastically collides with a resting ball with a mass of #3 kg#. What are the post-collision velocities of the balls?

What is the speed of an object that travels from #( 8 , 4, 1 ) # to #( 6 , 0, ,2 ) # over #2 s#?

An object is at rest at #(1 ,2 ,9 )# and constantly accelerates at a rate of #1 m/s^2# as it moves to point B. If point B is at #(3 ,1 ,4 )#, how long will it take for the object to reach point B? Assume that all coordinates are in meters.

What is defference betwen coil and resistor?

How does the Bohr model of an atom differ from the modern theory?

An object with a mass of # 2 kg# is traveling in a circular path of a radius of #4 m#. If the object's angular velocity changes from # 4 Hz# to # 8 Hz# in # 3 s#, what torque was applied to the object?

What is the cross product of #[2, -1, 4]# and #[-1, 2, 2] #?

What torque would have to be applied to a rod with a length of #1 m# and a mass of #1 kg# to change its horizontal spin by a frequency of #7 Hz# over #3 s#?

How do shock absorbers stop an automobile from continually bouncing?

A model train with a mass of #2 kg# is moving along a track at #36 (cm)/s#. If the curvature of the track changes from a radius of #6 cm# to #3 cm#, by how much must the centripetal force applied by the tracks change?