My estimate of brightness,
Number of batteries on a scale of 1 to 10
1 very dim
2 1
3 1 and 1/2
4 6
5 10 for a second, then
the bulb burned out
and changed to zero.
Answer:
Sound is produced when an object vibrates, creating a pressure wave. This pressure wave causes particles in the surrounding medium (air, water, or solid) to have vibrational motion. As the particles vibrate, they move nearby particles, transmitting the sound further through the medium.
Answer:
8 seconds, Answer choice C.
Explanation:
The information they give us about the speed of the cat, is from the point at which the dog started chasing it (that velocity being 10 m/s).
Notice that the actual distance the cat run is: 100 meters minus 20 meters (100 - 20 = 80 meters). Therefore, we have information on the distance covered by the cat (80 meters), and its speed (10 m/s), so we can use the definition of speed to find the time it took the cat to get to the tree:
Since all units for the physical quantities involved were given in the SI system, the answer comes also in the SI units of time: "seconds"
Answer:
Weight is a consequence of the universal law of gravitation
Explanation:
Weight, gravitational force of attraction on an object, caused by the presence of a massive second object, such as the Earth or Moon. Weight is a consequence of the universal law of gravitation: any two objects, because of their masses, attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Draw a line graph. The time on the bottom, temperature on the vertical line and the title of the graph on the top of the page.
