A water wave with a wavelength of 35.6 cm approaches a wall with a large opening in it. The hole begins to close. What size does the hole in the wall need to be for the wave to noticeably diffract through the hole? Justify your answer.

A physics major is cooking breakfast when he notices that the frictional force between his steel spatula and his Teflon frying pan is only 0.200 N.

What is the minimum work needed to push a 950-kg car 710 m up along a 9.0° incline? ignore friction?

Which of the following would cause electromagnetic induction? 1. The tv turned on 2. A cell phone is charged by plugging it into the outlet. 3. A constant current is supplied to a circuit board in your computer 4.

When a magnet is dropped why does it lose its magnetic properties

How do we use light in space?

If a car rolls gently off a vertical cliff, how long does it take to reach 90km/hr.

In the game of volleyball, what skill relates to Newton's second law

The minimum breaking distance d in feet for a typical vehicle can be modeled with the equation d (v) = 0.045v2, where v is the vehicle's speed in miles per hour.

A 2kg blob of putty moving at 4 m/s slams into a 6kg blob of putty at rest what is the speed of the to stick together blobs immediately after colliding

A stone is thrown vertically upward with a speed of 12m/s from the edge of a cliff 70 m high (a) How much later it reaches the bottom of the cliff? (b) What is its speed just before hitting? And (c) what total distance did it travel? (Ans: 5.