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

Two objects have masses of #33# #Mg# and #18# #Mg#. How much does the gravitational potential energy between the objects change if the distance between them changes from #81# # m# to #3# #m#?

A projectile is shot at a velocity of #27 m/s# and an angle of #pi/12 #. What is the projectile's maximum height?

What is the unit vector that is normal to the plane containing 3i+7j-2k and 8i+2j+9k?

A cord is tied to a pail of water and the pail is swung in a vertical circle of 1.2 m. What is the minimum velocity the pail must have at the top of the circle if no water spills?

An object with a mass of #9 kg# is acted on by two forces. The first is #F_1= < -7 N , 1 N># and the second is #F_2 = < 4 N, -5 N>#. What is the objects rate and direction of acceleration?

How much work does it take to raise a #3 kg # weight #81 m #?

What are values of ΔH, ΔU, ΔS for 1 mole of H20?

An object with a mass of #6 kg# is pushed along a linear path with a kinetic friction coefficient of #u_k(x)= 1+5cotx#. How much work would it take to move the object over #x in [(5pi)/12, (5pi)/8]#, where #x# is in meters?

What is simple harmonic motion?

Why is angular momentum conserved but not linear?

A charge of #8 C# passes through a circuit every #12 s#. If the circuit can generate #12 W# of power, what is the circuit's resistance?

Objects A and B are at the origin. If object A moves to #(6 ,7 )# and object B moves to #(-1 ,3 )# over #4 s#, what is the relative velocity of object B from the perspective of object A?

The velocity of an object with a mass of #3 kg# is given by #v(t)= 6 t^2 -4 t #. What is the impulse applied to the object at #t= 3 #?

An electric toy car with a mass of #3 kg# is powered by a motor with a voltage of #7 V# and a current supply of #5 A#. How long will it take for the toy car to accelerate from rest to #4 m/s#?

If a projectile is shot at an angle of #pi/2# and at a velocity of #22 m/s#, when will it reach its maximum height??

How does an electric generator work?

An object travels North at #8 m/s# for #3 s# and then travels South at #6 m/s# for # 7 s#. What are the object's average speed and velocity?

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

The force applied against an object moving horizontally on a linear path is described by #F(x)= cospix+x #. By how much does the object's kinetic energy change as the object moves from # x in [ 0, 2 ]#?