Middle c has a speed of 1500 m/s in water and 340 m/s in air. does it have a longer or shorter wavelength in water than in air and why?

There are 1000 g in every kilogram of a box has a mass of 483 g what is the mass of the box in kilogram

In a machine, work output is less than work input because some energy is converted into thermal energy. true or false.

The sketch shows a painter's scaffold in mechanical equilibrium. The person in the middle weighs 225 N, and the tension in each rope is 300 N. What is the weight of the scaffold?

7. True or False? The rules governing youth workers is the same for all youth, on the farm or not.

Show that the difference in volume across a first-order phase boundary is given by ∆V = - ∆F/P.

You accidentally slide a glass of milk off a table that is 0.9 m tall. How long does it take the milk to hit the ground.

A container can be made from steel [β = 36 * 10-6 (C°) - 1] or lead [β = 87 * 10-6 (C°) - 1]. A liquid is poured into the container, filling it to the brim.

Which solution has the greatest number of hydroxide ions? baking soda, pH = 9 milk, pH = 6 tomato juice, pH = 3.5 vinegar, pH = 2A substance is boiled repeatedly and stirred, but the solute never mixes with the solvent.

Part of the suns energy that reaches the Earths surface is absorbed by land and water as heat. The earths surface then releases heat back into the atmosphere Which of the following is true about this solar energy that is absorbed and released by

When Emeka was first training his dog, Smooches, to heel he would give Smooches a treat when she stayed close during walks. Now Smooches stays right by Emeka's side, even when she is not on her leash. In this case, a.