An x-ray with a wavelength of 3.5 * 10^-9 m travels with a speed of 3.0 * 10^8 m/s. What is the frequency of this electromagnetic wave?

A. 9.52 * 10^-1 Hz

B. 8.57 * 10^16 Hz

C. 1.17 * 10^-17 Hz

D. 1.05 Hz

Which property of gold is NOT a reason why gold is often used to make metals? Select one: a. corrosion resistant b. rare c. malleable d. good conductor of electricity

1. A 1 kg hockey puck is moving at 10 m/s across the ice. At the other end of the ice rink, its speed is measured at 9.2 m/s.

You throw a ball. air resistance on the ball is negligible. which of the following functions change with time as the ball flies through the air?

Arrange the following in order of their appearance in the life cycle of a star: white dwarf, red giant, main sequence star. Explain your answer

A 80 mW laser beam is polarized horizontally. It then passes through two polarizers. The axis of the first polarizer is oriented at 30∘ from the horizontal, and that of the second is oriented at 60∘ from the horizontal.

2. How is temperature related to kinetic energy?

As stream velocity decrease, which factor will likely increase? A) erosion of the stream bank B) deposition of material in the stream C) amount of material carried downstream D) size of the particles carried downstream

What cells in the nervous signals travel through the nervous system

A mechanic pushes a 3.60 ✕ 103-kg car from rest to a speed of v, doing 5,130 j of work in the process. during this time, the car moves 21.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?