A 80kg fire fighter climbs flights of stairs 6 meters high in 10 seconds. How much work is required by the firefighter

How are red giants different than main sequence stars?

I have density of 5.01 and volume of 1.2 what's my mass

The muzzle velocity of an armor-piercing round fired from an M1A1 tank is 1770 m/s (nearly 4000 mph or mach 5.2). A tank is at the top of a cliff and fires a shell horizontally.

How many atoms are in something determines its

If the applied force changes to 520 N, what is the acceleration of the block up the ramp? Given mass = 46kg Angle of ramp = 50 degrees from horizontal Coefficient of friction = 0.38 Original Fa = 455.4

A small rock remains at rest in outer space while an astronaut pushes horizontally on it with a force of 20 N. Which of the following must be true? A. There is another horizontal force acting on the rock. B.

If an igneous rock has very large crystals of minerals that you can see when looking at it, which type of igneous rock is it

You have a 60-foot roll of fencing and a large field. You want to make two paddocks by continuing the fencing down the middle of a rectangular enclosure. What are the dimensions of the largest such enclosure you can make?

Crystallization is a separation technique used to produce rock candy from a sugar solution. true or false

A car traveling in a straight line has a velocity of 3.79 m/s at some instant. After 5.4 s, its velocity is 11.9 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2