# Elena Albarran

Physics teacher | Verified Expert

With a Physics degree from the University of West Florida, I'm passionate about unraveling the mysteries of the universe. As a dedicated tutor, I bring clarity to complex concepts, making physics accessible to all. My goal is to ignite curiosity and foster understanding in every student I work with. Let's embark on a journey of discovery together!

## Questions

The rate of rotation of a solid disk with a radius of #1 m# and mass of #5 kg# constantly changes from #16 Hz# to #27 Hz#. If the change in rotational frequency occurs over #12 s#, what torque was applied to the disk?

A sphere is moving around in the air. If the moment of inertia is 10 Kg m2 and a radius of 1m. What is its mass?

An object with a mass of #8 kg# is acted on by two forces. The first is #F_1= < -2 N , 1 N># and the second is #F_2 = < 3 N, -4 N>#. What is the object's rate and direction of acceleration?

Car is driving with a speed of 36km/h. Then the car stops completely in 2 seconds. What is the negative acceleration of the car?

Some very hot rocks have a temperature of #350 ^o C# and a specific heat of #320 J/(Kg*K)#. The rocks are bathed in #150 L# of boiling water. If the heat of the rocks completely vaporizes the water, what is the minimum combined mass of the rocks?

If a spring has a constant of #4 (kg)/s^2#, how much work will it take to extend the spring by #19 cm #?

An object with a mass of #4 kg# is on a ramp at an incline of #pi/8 #. If the object is being pushed up the ramp with a force of # 2 N#, what is the minimum coefficient of static friction needed for the object to remain put?

An object with a mass of #6 kg# is hanging from a spring with a constant of #12 (kg)/s^2#. If the spring is stretched by # 29 m#, what is the net force on the object?

If a rocket with a mass of 4000 tons vertically accelerates at a rate of # 4/7 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?

What particles do the strong and weak nuclear forces act on?

How would you calculate the magnetic field in the following places: 33cm to the north of the wire? 230mm to the south of the wire? 880μm below the wire? 0.18m above the wire?

How does light bend if it is going from an object with a higher density through an object with a lower density?

What is the gravitational potential energy of a # 7 kg# object on a shelf # 1/2 m # high?

If #2 L# of a gas at room temperature exerts a pressure of #5 kPa# on its container, what pressure will the gas exert if it the container's volume changes to #2/3 L#?

If a rocket with a mass of #2500 tons # vertically accelerates at a rate of # 7/3 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 24 seconds?

What are some common mistakes students make with electromagnetism?

How much power is needed to accelerate an object with a mass of #6 kg# and a velocity of #3 m/s# at a rate of #7 m/s^2#?

How many categories of waves exist?

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?

A charge of #36 C# passes through a circuit every #4 s#. If the circuit can generate #9 W# of power, what is the circuit's resistance?