In a circular diffraction experiment, a hole is illuminated by light of wavelength [Lambda] nm. The width of the central maximum in a screen [L] m behind the hole is [w] mm. What is the diameter of the hole in millimeters?

As a contact tracer, you have identified several individuals that have come in contact with a know person who has COVID-19. You contact several individuals and follow up with them throughout a 14 day period. None of the individuals you have spoke to so far have any signs associated with COVID-19, so you suspect that they might be asymptomatic. How might an asymptomatic carrier of the coronavirus (SARS-COV-2) interfere with the application of Robert Koch’s postulates? As part of your response, include the Koch’s Postulates.

Which particle is described incorrectly?

What are the two main parts  of the Central Nervous system?

The primary structure of a protein

What is a nerve Track?

The restoring force a bow provides to an arrow as it is pulled back can be modeled as a spring force. The great archer Gila “nocks” an 18-g arrow by pulling it back a distance of 45 cm. Gila fires the arrow horizontally from a small cliff with a height of 15 m, and when the arrow reaches the bottom, it has a speed of 63 m/s. What is the effective spring constant of the bow as Gila nocks the arrow?

Hecelina drives her horse to pull her wagon up a long, shallow hill. The horse and wagon together have a mass of 1600 kg, and the horse provides a constant force of 1000 N directing the wagon up the hill. The hill rises a vertical distance of 8.0 m, and the hill is 85 m long along the slope. With what starting speed must Hecelina drive her horses so that they barely make it to the top of the hill before stopping? Neglect any drag forces.

Bacteria that have flagella at both poles of the cell are described as amphitrichous.

Deadeye Martin fires a 18-g arrow at a speed of 40 m/s at a 150-g apple tossed into the air by his friend Jaquette. If the arrow arrow travels straight through the apple at the peak of the apple’s trajectory, and the apple’s speed is 1.8 m/s after the collision, what is the speed of the arrow immediately after hitting the apple?