What are ph levels? Why are they important? What's there acceptable level/condition?

TRUE OR FLASE? there are always clouds during the winter, so it is colder

Now is studying wave a and wave b. Wave A is rated at 100 dB, and wave B is rated at 90 dB. Which statement can be made about the waves?

Which medium caused the most bending of light as it passed through?

A stone fell from the top of a cliff into the ocean. In the air, it had an average speed of 161616 / text{m/s}m/sstart text, m, slash, s, end text.

5. In an A-frame house, the two congruent sides extend from the ground to form a 34° angle at the peak. What angle does each side form with the ground? 156 146 73 78

What is the force of attraction between two masses 5kg and 8kg at a distance of 60cm apart. (A) 4.5*10-9N (B) 5.6*10-9N (C) 7.4*10-9N (D) 8.0*10-9N (E) 10.5*10-9N

A 1100 kg car pushes a 1800 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N.

The model that describes a Sun-centered solar system is called theA. laws of motion. B. geocentric model. C. heliocentric model. D. general theory of relativity.

A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 20.0 m/s. Then the truck travels for 20.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.

which of the following best describes the amount of natural resources found here in the united states. coal is the only natural resources found in abundance in the US. Natural resources here are lacking and must all be imported to the us.