A man climbs a wall that has a height of 8.4 meters and gains a potential energy of 4,620 joules. His mass is about ___ kilograms.

What are three characteristics a koala probably inherited from its parent

Name five characteristics of a star that can be determined by measuring its spectrum. Explain how you would use a spectrum to determine these characteristics.

Ocean waves are traveling to the east at 4.9 m/s with a distance of 23 m between crests. (b) With what frequency do the waves hit the front of a boat when the boat is moving westward at 1.1 m/s

A 100 kg train traveling at 20 m/s crashes into a stationary 400 kg car. After the collision the car and the train are stuck together. What is their velocity.

A capacitor stores 7.6 * 10-11 C when the electric potential difference between the plates is 5.8 V. What is the electric potential energy stored in the capacitor? Answ: 2.2 * 10-10 J

A 63 kg object needs to be lifted 7 meters in a matter of 5 secound. Approximately how much horsepower is required to achieve in the task

If you ere to continue the investigation, what would you suggest as a next step? and Can you determine the identity of an unknown substance by calculating its densitu and observing chemical reactions?

A small cylinder made of a diamagnetic material is brought near a bar magnet. One end of the cylinder is brought near the North pole of the magnet and is repelled.

Which of the following is true about rows of the periodic table? Atomic mass increases from left to right.

Which of these atoms is most likely to share electrons with other atoms?