


Amelia Adams
Physics teacher | Tutor for 8 years
With a passion for unraveling the mysteries of the universe, I hold a degree in Physics from Illinois Wesleyan University. I'm dedicated to fostering a deeper understanding of the cosmos through engaging teaching methods. Whether it's classical mechanics or quantum theory, I strive to make complex concepts accessible to all students. My goal is to inspire curiosity and ignite a lifelong love for learning in each individual I teach. Together, let's explore the wonders of the physical world.
Questions
An electric toy car with a mass of #2 kg# is powered by a motor with a voltage of #8 V# and a current supply of #6 A#. How long will it take for the toy car to accelerate from rest to #6 m/s#?
A soccer ball leaves a cliff 20.2 m above the valley floor, at an angle of 10 degrees above the horizontal. The ball hits the valley floor 3.0 sec later. What is the initial velocity of the ball? What maximum height above the cliff did the ball reach?
An object with a mass of #2 kg# is revolving around a point at a distance of #5 m#. If the object is revolving at a rate of #5 Hz#, what is the centripetal force on the object?
A box with an initial speed of #8 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #7/4 # and an incline of #(2 pi )/3 #. How far along the ramp will the box go?
A model train, with a mass of #3 kg#, is moving on a circular track with a radius of #8 m#. If the train's rate of revolution changes from #1/4 Hz# to #1/8 Hz#, by how much will the centripetal force applied by the tracks change by?
A container has a volume of #19 L# and holds #6 mol# of gas. If the container is compressed such that its new volume is #5 L#, how many moles of gas must be released from the container to maintain a constant temperature and pressure?
A 2.0-kg ball is moving with a constant speed of 5.0m/s in a horizontal circle whose diameter is 1.0 m. What is the magnitude of the net force on the ball?
What is the cross product of #<1,2,-4># and #<-1,-1,2>#?
What is the force, in terms of Coulomb's constant, between two electrical charges of #-45 C# and #-75 C# that are #15 m # apart?
An object with a mass of #18 g# is dropped into #400 mL# of water at #0^@C#. If the object cools by #150 ^@C# and the water warms by #12 ^@C#, what is the specific heat of the material that the object is made of?
How does impulse relate to work?
A solid disk, spinning counter-clockwise, has a mass of #16 kg# and a radius of #3/7 m#. If a point on the edge of the disk is moving at #8/5 m/s# in the direction perpendicular to the disk's radius, what is the disk's angular momentum and velocity?
Which of Newton's laws states that an object with no net force will remain in rest or in constant velocity?
What is the coil current 2ms after being connected to the supply if a coil of inductance 0.5H and resistance 500#Omega# is connected across a 250V DC supply? (The time constant T of the circuit is 1ms).
The position of an object moving along a line is given by #p(t) = 3t - 2cos(( pi )/8t) + 2 #. What is the speed of the object at #t = 3 #?
Why don't action and reaction forces cancel each other?
What is the force, in terms of Coulomb's constant, between two electrical charges of #22 C# and #-32 C# that are #6 m # apart?
How are displacement, velocity, and acceleration related in describing the motion of an object?
If a #2 kg# object is being constantly accelerated from #0m/s# to #15 m/s# over # 6s#, how much power is being applied at #t= 2 #?
A car drives north at 50 mi/h for 10 min and then turns east and goes 5.0 min at 62 mi/h. Finally, it goes southwest at 26 mi/h for 6.0 min. what is the car's displacement? What is its average velocity for this trip?