A student is standing 8 m from a roaring truck engine that is measured at 20 dB. The student moves 4 m closer to

the engine. What is the measured sound intensity at the new distance?

dB

Why did scientists agree to use one system of measurement

Two tables each have a mass of 29kg If the graviton always force between them is 4.24 x 10 to the power of - 10 N how far apart are they? G=6.67 x 10to the power of - 11 N. (m/kg) to the power of two

Under what circumstances does distance traveled equal magnitude of displacement? what is the only case in which magnitude of displacement and displacement are exactly the same?

Does a source moving affects light?

A solenoid is created by wrapping a L = 55 m long wire around a hollow tube of diameter D = 4.5 cm. The wire diameter is d = 0.55 mm. The solenoid wire is then connected to a power supply so that a current of I = 8.5 A flows through the wire. A.

How are energy and speed related

11. Which of the following best explains velocity? A. The direction of an object in motion B. Only the change of direction of an object in motion C. The speed and direction of an object in motion D. The speed of an object in motion

Using 6400 km as the radius of Earth, calculate how high above Earth's surface you would have to be in order to weigh 1/16th of your current weight. Show all work leading to your answer OR describe your solution using 3 - 4 complete sentences.

Which of these could occur if a switch is closed? A. A light bulb will light up. B. A hair dryer will turn off. C. A computer will shut down. D. B and C

When you throw a ball the work you do to accelerate it equals the kinetic energy the ball gains?