# Lily Adams

Physics teacher | Experienced educator in USA

I hold a degree in Physics from Pittsburg State University, where my passion for unraveling the mysteries of the physical world flourished. As an avid educator, I'm dedicated to fostering a deep understanding of physics among students. With a focus on clarity and engagement, I strive to make complex concepts accessible. Let's embark on a journey of discovery together, where questions find answers and knowledge finds a home.

## Questions

The height of a ball (in meters) #t# seconds after it is thrown is given by #y(t)=-4.9t^2+11.6t+22.5#. From what height was the ball thrown?

What is the frequency of a sound wave having a velocity of 341 m/s and a wavelength of 0.8 meters?

How do quarks fit into the atomic model?

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

A projectile is shot at a velocity of #3 m/s# and an angle of #pi/8 #. What is the projectile's peak height?

A charge of #18 C# passes through a circuit every #2 s#. If the circuit can generate #24 W# of power, what is the circuit's resistance?

What energy transformations takes place in a motor?

What is the moment of inertia of a pendulum with a mass of #2 kg# that is #7 m# from the pivot?

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

A container with a volume of #6 L# contains a gas with a temperature of #620^o K#. If the temperature of the gas changes to #370 ^o K# without any change in pressure, what must the container's new volume be?

What is the dot product of # (-300i + 200j - 150k)# and #(i + j -7k)#?

Objects A and B are at the origin. If object A moves to #(3 ,6 )# and object B moves to #(6 ,-5 )# over #1 s#, what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.

A car driving at 41m/s hits the brakes and comes to a stop in 4.8 seconds. What was the car's acceleration during this stop?

The momentum of a 350 000 truck is 94 050kgm/s.Find its velocity?

For the equation #v_f^2=v_i^2 + 2ad#, how do you solve for #v_i#?

If #12 L# of a gas at room temperature exerts a pressure of #5 kPa# on its container, what pressure will the gas exert if the container's volume changes to #2 L#?

What torque would have to be applied to a rod with a length of #12 m# and a mass of #7 kg# to change its horizontal spin by a frequency #5 Hz# over #4 s#?

How to evaluate the integral by interpreting it in terms of areas. a=-1 and b=2 ∫ (1-x) dx ?

What is the gravitational potential energy of a # 1 kg# object on a shelf # 5 m # high?

An object travels North at #4 m/s# for #9 s# and then travels South at #6 m/s# for # 2 s#. What are the object's average speed and velocity?