How dose energy move through an ecosystem

The velocity of sound on a particular day outside is 331 meter/sound. what is the frequency of a tone if it has a wavelength 0.6 meters?

A hot tub containing 785 gallons of water is emptied using a pump rated at 3.5 gallons per minute

1. An object with a mass of m is thrown straight up near the surface of the earth. While the object is going up, the net force on it is A) Zero. B) Less than mg. C) Equal to mg. D) More than mg.

2. If a force is exerted on an object, which statement is true?

Which of the following correctly compares the uses of bar graphs versus pie charts? Bar graphs show patterns in data with variables that change over time; whereas, pie charts show data as parts out of a whole (such as out of 100%).

Rearrange R=V/I so that it is in the form Y=MX+C

An object with a mass of 11.5kg falls 6.69m what will the air's internal energy increase by from this falling object?

A car sits in an entrance ramp to a freeway, waiting for a break in the traffic. The driver sees a small gap between a van and an 18-wheel truck and accelerates with constant acceleration along the ramp and onto the freeway.

A horizontal surface of area 0.321 m2has an electric flux of 123 N. m2/C passing through it at an angle of 25° to the horizontal. If the flux is due to a uniform electric field, calculate the magnitude of the latter.

What are the advantages and disadvantages of steel in electric, mechanical, solar and power cables?