# Sebastian Acosta

Physics teacher | Verified Expert

I hold a degree in Physics from Clarkson University, where I honed my passion for unraveling the mysteries of the universe. With a penchant for inquiry and discovery, I thrive on guiding students through the complexities of physics. My journey from Clarkson has equipped me with a deep understanding of theoretical concepts and practical applications. From classical mechanics to quantum theory, I am committed to fostering a deeper appreciation for the wonders of physics. With tailored approaches and engaging strategies, I aim to inspire curiosity and instill confidence in every student I teach. Let's explore the universe together.

## Questions

The initial mass of a radioactive goo is 180 grams. After 195 minutes, the sample has decayed to 2.8125 grams. Find the half-life of the substance in minutes? Find a formula for the amount, G(t), remaining at time t.? Find grams remain after 35 min?

If an object is moving at #3 m/s# over a surface with a kinetic friction coefficient of #u_k=20 /g#, how far will the object continue to move?

An object with a mass of #5 kg# is pushed along a linear path with a kinetic friction coefficient of #u_k(x)= x^2+2 #. How much work would it take to move the object over #x in [2, 5], where x is in meters?

What are some examples of electromagnetic waves?

If #32 L# of a gas at room temperature exerts a pressure of #72 kPa# on its container, what pressure will the gas exert if the container's volume changes to #16 L#?

Why would the pressure in a container of gas rise 2.56 kPa if temperature remains the same?

How much work does it take to raise a #7 kg # weight #15 m #?

A container with a volume of #8 L# contains a gas with a temperature of #230^o C#. If the temperature of the gas changes to #340 ^o K# without any change in pressure, what must the container's new volume be?

How are electric forces and gravity similar?

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 travels North at # 4 m/s# for #7 s# and then travels South at # 2 m/s# for # 4 s#. What are the object's average speed and velocity?

An object with a mass of #5 kg# is hanging from an axle with a radius of #18 m#. If the wheel attached to the axle has a radius of #8 m#, how much force must be applied to the wheel to keep the object from falling?

If a projectile is shot at an angle of #(2pi)/3# and at a velocity of #6 m/s#, when will it reach its maximum height?

What are the strong and weak forces in an atom?

How fast will an object with a mass of #3 kg# accelerate if a force of #19 N# is constantly applied to it?

A model train with a mass of #4 kg# is moving along a track at #3 (cm)/s#. If the curvature of the track changes from a radius of #4 cm# to #27 cm#, by how much must the centripetal force applied by the tracks change?

What is the force, in terms of Coulomb's constant, between two electrical charges of #18 C# and #-15 C# that are #9 m # apart?

Two charges of # 2 C # and # 8 C# are positioned on a line at points # -3 # and # 6 #, respectively. What is the net force on a charge of # -3 C# at # -2 #?

A charge of #5 C# passes through a circuit every #5 s#. If the circuit can generate #15 W# of power, what is the circuit's resistance?

A spring with a constant of #4 (kg)/s^2# is lying on the ground with one end attached to a wall. An object with a mass of #5 kg# and speed of #5 m/s# collides with and compresses the spring until it stops moving. How much will the spring compress?