Planet a has three times the mass of planet b and the same radius. from this information, what can we conclude about the acceleration due to gravity at the surface of planet a compared to that at the surface of planet b?

This is a velocity versus time graph of a car starting from rest. If the area under the line is 10 meters, what is the corresponding time interval?

Explain how electron microscopes work and why some scientists might prefer to use electron microscopes instead of light microscopes.

If you touch the two terminals of a power supply with your two fingertips on opposite hands, the potential difference will produce a current through your torso. The maximum safe current is approximately 5 {/rm mA}.

What is the velocity of a bobsled that travels 100 meters in 8.9 seconds in m/s

How many newtons of force are represented by the following amount: 3 kg•m/sec²? Justify your answer

What kind of tide is responsible for extreme tides

What does the speed of sound depend on? A. Medium that the sound travels through B. Acoustics C. Frequency of the sound D. Loudness of the sound

Which of these is not a source of the shock waves that lead to protostars?

Which kind of information is known about a person if that person's DNA is in a database? A. how old the person is B. where the person was probably born C. some diseases the person might have D. whether the person is likely to commit a crime

A science teacher ran a marathon. After the race she showed her students the silver blanket she was given to keep her warm. A group of students investigated how the colour of the blanket affected how much infrared radiation is absorbed