# Nathan Ashcroft

Physics teacher | Tutor for 8 years

I hold a degree in Physics from Eastern Mennonite University. With a passion for unraveling the mysteries of the universe, I thrive on sharing my knowledge with students. From classical mechanics to quantum theory, I offer clear explanations and engaging lessons to foster deep understanding. Let's explore the wonders of physics together, tackling questions across various subjects.

## Questions

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 #3 N# to keep pushing it, what are the coefficients of static and kinetic friction?

A box with an initial speed of #8 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #4/3 # and an incline of #( pi )/6 #. How far along the ramp will the box go?

An object with a mass of #12 kg#, temperature of #125 ^oC#, and a specific heat of #32 (KJ)/(kg*K)# is dropped into a container with #35 L # of water at #0^oC #. Does the water evaporate? If not, by how much does the water's temperature change?

The gas inside of a container exerts #12 Pa# of pressure and is at a temperature of #120 ^o C#. If the temperature of the gas changes to #540 ^oK# with no change in the container's volume, what is the new pressure of the gas?

A projectile is shot at a velocity of # 1 m/s# and an angle of #pi/4 #. What is the projectile's peak height?

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

A circuit with a resistance of #6 Omega# has a fuse that melts at #8 A#. Can a voltage of #49 V# be applied to the circuit without blowing the fuse?

A model train with a mass of #4 kg# is moving along a track at #14 (cm)/s#. If the curvature of the track changes from a radius of #84 cm# to #42 cm#, by how much must the centripetal force applied by the tracks change?

A car is accelerating at #12m/s^2# . What is the acceleration in #km/h^2#?

What is mirror used by dentists?

How fast will an object with a mass of #4 kg# accelerate if a force of #23 N# is constantly applied to it?

An object travels North at #1 m/s# for #3 s# and then travels South at #12 m/s# for #7 s#. What are the object's average speed and velocity?

Is it possible to have en electromagnetic wave with a wavelength of #99.7# nm and an energy of #1.99*10^-18# J?

A cylinder has inner and outer radii of #2 cm# and #4 cm#, respectively, and a mass of #12 kg#. If the cylinder's frequency of counterclockwise rotation about its center changes from #6 Hz# to #1 Hz#, by how much does its angular momentum change?

A container has a volume of #21 L# and holds #14 mol# of gas. If the container is compressed such that its new volume is #7 L#, how many moles of gas must be released from the container to maintain a constant temperature and pressure?

What is the electric current produced when a voltage of #12 V# is applied to a circuit with a resistance of #55 Omega#?

An object with a mass of #100 g# is dropped into #500 mL# of water at #0^@C#. If the object cools by #20 ^@C# and the water warms by #4 ^@C#, what is the specific heat of the material that the object is made of?

How much work would it take to push a #8 kg # weight up a # 5 m # plane that is at an incline of # pi / 12 #?

A balanced lever has two weights on it, the first with mass #4 kg # and the second with mass #9 kg#. If the first weight is # 4 m# from the fulcrum, how far is the second weight from the fulcrum?

Kinetic energy of an object is 25 j. Velocity is 5 m/s what will be its kinetic energy if velocity is doubles?