When a straw is placed in a glass of water looks bent, which behavior of wave does it describe?

a. refraction

b. diffraction

c. reflection

According to Newton's first law of motion, which force is expected to cause a body to accelerate? A. unbalanced force B. balanced force C. weak force D. strong force

Oxygen with tt1 = 1000°r, pt1 = 100 psia, and m1 = 0.2 enters a device with a cross-sectional area a1 = 1 ft2. there is no heat transfer, work transfer, or losses as the gas passes through the device and expands to 14.7 psia.

Why you do scientists collect multiple trials?

Which of the following is not true about the Global Positioning Systems (GPS) ? a. GPS can determine the composition of soil on mountain ranges. b. GPS can determine latitude and longitude of a given area. c.

Name three things that land dwelling animals need to stay alive. Do you think animals that live in water also need these things? Discuss.

Redacteza o compunere in care sa prezinti o modalitate placuta de petrecere a vacantei de vara

The three forces acting on a hot-air balloon that is moving vertically are its weight, the force due to air resistance and the upthrust force. The hot-air balloon descends vertically at constant speed. The force of air resistance on the balloon is F.

Which are vascular plants. A. fern B. hornworts. C. liverworts D. mosses

The uniform circular motion of a space station can be used to create artificial gravity. This can be done by adjusting the angular speed of the space station, so the centripetal acceleration at an astronaut's feet equals g, the magnitude of the

What are the differences and similarities to Speed and Velocity?