A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 2.6 s later. If the speed of sound is 340 m/s, how high is the cliff?

Holiday lights are often connected in series and use special lamps that short out when the potential difference across a lamp increases to the line voltage.

Why does a tail appear when a comet nears the sun?

Calculate the momentum for the following scenario: a bowling ball is moving at a velocity of 15 m/s and has a mass of 8.00 kg. * 120 kg • m/s 12000 kg • m/s 1.87 kg • m/s 0.53 kg • m/s

An old movie poster used a quote "In space, no one can hear you scream!" Why this is true or not true? A) The quote is incorrect, you can hear sound in outer space. B) Sound cannot be polarized. So, you cannot hear sound in space.

The atomic mass of potassium is 39. if its atomic number is 9, it has how many neutrons within each potassium atom?

A 100 N box is placed on an inclined plane that makes a 30° angle with the horizontal. Calculate the component of gravitational force that acts down the inclined plane. A. 25 N B. 50 N C. 87 N D. 100 N

To produce electricity, a generator needs what kind of input? a) a magnetic field b) a moving rod c) mechanical energy d) electrical energy

What needs to be emphasized in this step when reading? "Turn the two-bottle assembly over, and place the assembly on a table with the filled bottle on top. Watch the water slowly drip down into the lower bottle ...

You just competed in a track meet and you ran the 1500 m race in 484 seconds. what was your average speed in miles per hour?

A spring with spring-constant of 100 n/m is compressed 0.10 m. what is its maximum stored elastic potential energy