Taking the speed of sound in air to be 330 m/s, select the correct frequency of a sound wave with a wavelength of 25 cm:

a. 1320 Hz

b. 990 Hz

c. 355 Hz

d. 8250 Hz

A child pulls a sled along a rough horizontal surface by applying a constant 20 N force at an angle 60 o above the horizontal. How much work does the child do, in Joules, by pulling the sled 15 meters?

Which units are used to express sound intensity? Decibels Hertz Volts Amperes

You decide to redo Galileo's inclined plane experiment. On the shelf in your pantry you find two cans of soup that are equal in size and weight. One is chicken broth and the other is cream of mushroom. You decide to use these for the experiment.

How does an iron nail become a magnet when it is placed in a strong magnetic field

a spring stretches by 0.12 m when some apples weighing 3.2 N are supported from it. What is the Spring Constant?

10 PTS. A resistor has a value of 2.2 x 10⁵ Ω ± 20%. What is the range of possible values for this resistor?

Describe 3 uses of radioactivity isotopes

Two friends, barbara and neil, are out rollerblading. with respect to the ground, barbara is skating due south at a speed of 5.9 m/s. neil is in front of her. with respect to the ground, neil is skating due west at a speed of 1.4 m/s.

If the average movement of the particles in a sweater increases, what will happen to the sweater's temperature?

Will you die if you eat wax?